Exhibit 4.1

Execution Version

PASS THROUGH TRUST AGREEMENT

Dated as of September 16, 2014

between

AMERICAN AIRLINES, INC.

and

WILMINGTON TRUST COMPANY

as Trustee

TABLE OF CONTENTS

i

ii

iii

Reconciliation and tie between American Airlines Pass Through Trust Agreement, dated as of September 16, 2014 and the Trust Indenture Act of 1939. This reconciliation does not constitute part of the Pass Through Trust Agreement.

iv

PASS THROUGH TRUST AGREEMENT

This PASS THROUGH TRUST AGREEMENT, dated as of September 16, 2014 (the “Basic Agreement”), between American Airlines, Inc., a Delaware corporation, and Wilmington Trust Company, a Delaware trust company, as Trustee, is made with respect to the formation from time to time of separate American Airlines Pass Through Trusts, and the issuance from time to time of separate series of Pass Through Certificates representing fractional undivided interests in the respective Trusts.

WITNESSETH:

WHEREAS, from time to time, the Company and the Trustee may enter into one or more Trust Supplements (this and certain other defined terms used herein are defined in Section 1.01) pursuant to which the Trustee shall declare the creation of a separate Trust for the benefit of the Holders of the series of Certificates to be issued in respect of such Trust, and the initial Holders of the Certificates of such series, as the grantors of such Trust, by their respective acceptances of the Certificates of such series, shall join in the creation of such Trust with the Trustee;

WHEREAS, all Certificates to be issued in respect of each separate Trust will be issued as a separate series pursuant to this Agreement, will evidence fractional undivided interests in such Trust and will have no rights, benefits or interests in respect of any other separate Trust or the property held therein, subject, however, to the provisions of any Intercreditor Agreement to which one or more Trusts may be a party and to any provisions to the contrary in any applicable Trust Supplement;

WHEREAS, from time to time, pursuant to the terms and conditions of this Agreement with respect to each separate Trust formed hereunder, the Trustee on behalf of such Trust shall purchase one or more issues of Equipment Notes, or notes issued by a separate trust or other entity secured by Equipment Notes, having the identical interest rate as, and final maturity dates not later than the final Regular Distribution Date of, the series of Certificates issued in respect of such Trust and, subject to the terms of any related Intercreditor Agreement and to any terms to the contrary in any applicable Trust Supplement, shall hold such Equipment Notes in trust for the benefit of the Certificateholders of such Trust;

WHEREAS, to facilitate the sale of Equipment Notes to, and the purchase of Equipment Notes by, the Trustee on behalf of each Trust created from time to time pursuant to this Agreement, the Company as the “issuer”, as such term is defined in and solely for purposes of the Securities Act, of the Certificates to be issued in respect of each Trust and as the “obligor”, as such term is defined in and solely for purposes of the Trust Indenture Act, has duly authorized the execution and delivery of this Basic Agreement and is undertaking to perform certain administrative and ministerial duties hereunder and is also undertaking to pay the fees and expenses of the Trustee; and

WHEREAS, this Agreement, as supplemented from time to time, is subject to the provisions of the Trust Indenture Act and shall, to the extent applicable, be governed by such provisions;

1

NOW, THEREFORE, in consideration of the mutual agreements herein contained, and of other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I.

DEFINITIONS

Section 1.01 Definitions . For all purposes of this Basic Agreement, except as otherwise expressly provided or unless the context otherwise requires:

(1) the terms used herein that are defined in this Article I have the meanings assigned to them in this Article I, and include the plural as well as the singular;

(2) all other terms used herein that are defined in the Trust Indenture Act, either directly or by reference therein, or by the rules promulgated under the Trust Indenture Act, have the meanings assigned to them therein;

(3) all references in this Basic Agreement to designated “Articles”, “Sections”, “Subsections” and other subdivisions are to the designated Articles, Sections, Subsections and other subdivisions of this Basic Agreement;

(4) the words “herein”, “hereof” and “hereunder” and other words of similar import refer to this Basic Agreement as a whole and not to any particular Article, Section, Subsection or other subdivision;

(5) unless the context otherwise requires, whenever the words “including”, “include” or “includes” are used herein, it shall be deemed to be followed by the phrase “without limitation”; and

(6) the term “this Agreement” (as distinguished from “this Basic Agreement”) refers, unless the context otherwise requires, to this Basic Agreement as supplemented by the Trust Supplement creating a particular Trust and establishing the series of Certificates issued or to be issued in respect thereof, with reference to such Trust and such series of Certificates, as this Basic Agreement as so supplemented may be further supplemented with respect to such Trust and such series of Certificates.

Act: Has the meaning, with respect to any Certificateholder, specified in Section 1.04(a).

Affiliate: Means, with respect to any specified Person, any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such Person. For the purposes of this definition, “control”, when used with respect to any specified Person, means the power, directly or indirectly, to direct the management and policies of such Person, whether through the ownership of voting securities or by contract or otherwise, and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

2

Agreement: Has the meaning specified in Section 1.01(6).

Aircraft: Means one or more aircraft, including engines therefor, owned by or leased to the Company and securing one or more Equipment Notes.

Authorized Agent: Means, with respect to the Certificates of any series, any Paying Agent or Registrar for the Certificates of such series.

Avoidable Tax: Has the meaning specified in Section 7.09(e).

Basic Agreement: Means this Pass Through Trust Agreement, as the same may from time to time be supplemented, amended or modified, but does not include any Trust Supplement.

Book-Entry Certificates: Means, with respect to the Certificates of any series, Certificates of such series ownership and transfers of which shall be made through book entries as described in Section 3.05.

Business Day: Means, with respect to the Certificates of any series, any day other than a Saturday, a Sunday or a day on which commercial banks are required or authorized to close in New York, New York, Dallas, Texas, or, so long as any Certificate of such series is outstanding, the city and state in which the Trustee or any related Loan Trustee maintains its Corporate Trust Office or receives and disburses funds.

Certificate: Means any one of the certificates executed and authenticated by the Trustee, substantially in the form specified in the relevant Trust Supplement.

Certificate Account: Means, with respect to the Certificates of any series, the account or accounts created and maintained for such series pursuant to Section 4.01(a) and the related Trust Supplement.

Certificateholder or Holder: Means, with respect to the Certificates of any series, a Person in whose name a Certificate of such series is registered in the Register for Certificates of such series.

Certificate Owner: Means, with respect to the Certificates of any series, for purposes of Section 3.05, a Person who owns a Book-Entry Certificate of such series.

Clearing Agency: Means an organization registered as a “clearing agency” pursuant to Section 17A of the Securities Exchange Act of 1934, as amended.

Clearing Agency Participant: Means a broker, dealer, bank, other financial institution or other Person for whom from time to time a Clearing Agency effects, directly or indirectly, book-entry transfers and pledges of securities deposited with the Clearing Agency.

Company: Means American Airlines, Inc., a Delaware corporation, or its successor in interest pursuant to Section 5.02.

3

Controlling Party: Means, with respect to the Certificates of any series, the Person entitled to act as such pursuant to the terms of the related Intercreditor Agreement.

Corporate Trust Office: Means, with respect to the Trustee or any Loan Trustee, the office of such trustee in the city at which at any particular time its corporate trust business shall be principally administered.

Cut-off Date: Means, with respect to the Certificates of any series, the date designated as such in the Trust Supplement establishing such series.

Definitive Certificates: Has the meaning, with respect to the Certificates of any series, specified in Section 3.05(a).

Direction: Has the meaning specified in Section 1.04(a).

Distribution Date: Means any Regular Distribution Date, Special Distribution Date or Initial Regular Distribution Date.

Equipment Note: Means, with respect to any Trust, any one of the notes, certificates or instruments issued pursuant to any Indenture and described as “Equipment Notes” in, or on a schedule attached to, the Trust Supplement in respect of such Trust and to be held by the Trustee as part of such Trust, including any Equipment Note (as so defined) issued under the applicable Indenture in replacement thereof or substitution therefor.

ERISA: Means the Employee Retirement Income Security Act of 1974, as amended from time to time, or any successor federal statute.

Escrow Account: Has the meaning, with respect to any Trust, specified in Section 2.02(b).

Escrowed Funds: Has the meaning, with respect to any Trust, specified in Section 2.02(b).

Event of Default: Means, in respect of any Trust, an Indenture Event of Default under any Indenture pursuant to which Equipment Notes held by such Trust were issued and such other event as may be designated under the related Trust Supplement as an “Event of Default”.

Fractional Undivided Interest: Means the fractional undivided interest in a Trust that is evidenced by a Certificate relating to such Trust.

Holder: Has the meaning specified in the definition of “Certificateholder or Holder”.

Indenture: Means, with respect to any Trust, each of the one or more separate trust indenture and security agreements or trust indenture and mortgages or similar documents described in, or on a schedule attached to, the Trust Supplement and an indenture having

4

substantially the same terms and conditions which relates to a Substitute Aircraft, as each such indenture may be amended or supplemented in accordance with its respective terms; and “Indentures” means all of such agreements.

Indenture Event of Default: Means, with respect to any Indenture, any Event of Default (as such term is defined in such Indenture).

Initial Regular Distribution Date: Means, with respect to the Certificates of any series, the first Regular Distribution Date on which a Scheduled Payment is to be made.

Intercreditor Agreement: Means (a) any agreement by and among the Trustee, as trustee with respect to one or more Trusts, one or more Liquidity Providers, if applicable, and a Subordination Agent providing, among other things, for the distribution of payments made in respect of Equipment Notes held by such Trusts, or (b) such other agreement or agreements designated as an “Intercreditor Agreement” in the Trust Supplement relating to any Trust.

Issuance Date: Means, with respect to the Certificates of any series, the date of the issuance of such Certificates.

Lease: Means any lease between an Owner Trustee, as the lessor (or such other Person acting as the lessor), and the Company, as the lessee, referred to in the related Indenture, as such lease may be amended, supplemented or otherwise modified in accordance with its terms; and “Leases” means all such Leases.

Letter of Representations: Means, with respect to the Certificates of any series, an agreement among the Company, the Trustee and the initial Clearing Agency substantially in the form attached as an Exhibit to the related Trust Supplement, as such letter may be modified or supplemented, or any successor letter thereto.

Liquidity Facility: Means, with respect to the Certificates of any series or any Equipment Notes, (a) any revolving credit agreement, letter of credit, bank guarantee, insurance policy, surety bond or financial guaranty or any other type of agreement or arrangement for the provision of insurance, a guarantee or other credit enhancement or liquidity support relating to the Certificates of such series between a Liquidity Provider and a Subordination Agent or one or more other Persons, as amended, replaced, supplemented or otherwise modified from time to time in accordance with its terms and, if applicable, the terms of any Intercreditor Agreement, or (b) such other agreement or agreements designated as a “Liquidity Facility” in the Trust Supplement relating to any Trust.

Liquidity Provider: Means, with respect to the Certificates of any series, a bank, insurance company, financial institution or other Person that agrees to provide a Liquidity Facility for the benefit of the holders of Certificates of such series.

Loan Trustee: Means, with respect to any Equipment Note or the Indenture applicable thereto, the bank, trust company or other financial institution designated as loan or indenture trustee under such Indenture, and any successor to such Loan Trustee as such trustee; and “Loan Trustees” means all of the Loan Trustees under the Indentures.

5

Note Documents: Means, with respect to the Certificates of any series, the Equipment Notes with respect to such Certificates and, with respect to such Equipment Notes, the related Indenture, Note Purchase Agreement, and, if the related Aircraft is leased to the Company, the related Lease and the related Purchase Agreement Assignment (as defined in the related Lease), if any, and, if the Parent has guaranteed the obligations of the Company under any such Equipment Notes or Leases, the Parent Guarantee.

Note Purchase Agreement: Means, with respect to the Certificates of any series, any note purchase, refunding, participation or similar agreement providing for, among other things, the purchase of Equipment Notes by the Trustee on behalf of the relevant Trust; and “Note Purchase Agreements” means all such agreements.

Officer’s Certificate: Means a certificate signed, (a) in the case of the Company, by the Chairman or Vice Chairman of the Board of Directors, the President, any Executive Vice President, any Senior Vice President, any Vice President or the Treasurer of the Company or (b) in the case of the Trustee or an Owner Trustee or a Loan Trustee, a Responsible Officer of the Trustee or such Owner Trustee or such Loan Trustee, as the case may be.

Opinion of Counsel: Means a written opinion of legal counsel who (a) in the case of counsel for the Company may be (i) a senior attorney of the Company one of whose principal duties is furnishing advice as to legal matters, (ii) Latham & Watkins, LLP or (iii) such other counsel designated by the Company and reasonably acceptable to the Trustee and (b) in the case of any Owner Trustee or any Loan Trustee, such counsel as they may designate, whether or not such counsel is an employee of any of them, and who shall be reasonably acceptable to the Trustee.

Outstanding: When used with respect to Certificates of any series, means, as of the date of determination, all Certificates of such series theretofore authenticated and delivered under this Agreement, except:

(i) Certificates of such series theretofore cancelled by the Registrar or delivered to the Trustee or the Registrar for cancellation;

(ii) all of the Certificates of such series if money in the full amount required to make the final distribution with respect to such series pursuant to Section 11.01 hereof has been theretofore deposited with the Trustee in trust for the Holders of the Certificates of such series as provided in Section 4.01, pending distribution of such money to such Certificateholders pursuant to payment of such final distribution payment; and

(iii) Certificates of such series in exchange for or in lieu of which other Certificates of such series have been authenticated and delivered pursuant to this Agreement.

6

Owner Participant: Means, with respect to any Equipment Note, the “Owner Participant”, if any, as referred to in the Indenture pursuant to which such Equipment Note is issued and any permitted successor or assign of such Owner Participant; and “Owner Participants” at any time of determination means all of the Owner Participants thus referred to in the Indentures.

Owner Trustee: Means, with respect to any Equipment Note, the “Owner Trustee”, if any, as referred to in the Indenture pursuant to which such Equipment Note is issued, not in its individual capacity but solely as trustee; and “Owner Trustees” means all of the Owner Trustees party to any of the related Indentures.

Parent: Means American Airlines Group, Inc., a Delaware corporation, or any other Person that directly or indirectly controls the Company, in each case together with its successors and assigns. For the purposes of this definition, “control” means the power, directly or indirectly, to direct or cause the direction of the management and policies of the Company, whether through the ownership of voting securities or by contract or otherwise.

Parent Guarantee: Means, with respect to the Certificates of any series, a guarantee by the Parent of the obligations of the Company under any Equipment Notes or any Leases related to Equipment Notes to be acquired and held in the Trust as to which the Certificates of such series represent fractional undivided interests.

Paying Agent: Means, with respect to the Certificates of any series, the paying agent maintained and appointed for the Certificates of such series pursuant to Section 7.12.

Permitted Investments: Means obligations of the United States of America or agencies or instrumentalities thereof for the payment of which the full faith and credit of the United States of America is pledged, maturing in not more than 60 days after the date of acquisition thereof or such lesser time as is required for the distribution of any Special Payments on a Special Distribution Date.

Person: Means any person, including any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, trustee, unincorporated organization, or government or any agency or political subdivision thereof.

Pool Balance: Means, with respect to the Certificates of any series as of any date, except to the extent otherwise provided in the applicable Trust Supplements, (i) the original aggregate face amount of the Certificates of such series less (ii) the aggregate amount of all distributions made in respect of such Certificates other than distributions made in respect of interest or premium or reimbursement of any costs or expenses incurred in connection therewith. The Pool Balance as of any Regular Distribution Date or Special Distribution Date with respect to such series shall be computed after giving effect to the payment of principal, if any, on the Equipment Notes or other Trust Property held in the Trust and the distribution thereof to be made on such date.

7

Pool Factor: Means, with respect to any series of Certificates as of any date, except to the extent otherwise provided in the applicable Trust Supplement, the quotient (rounded to the seventh decimal place, with 0.00000005 being rounded upward) computed by dividing (i) the Pool Balance of such series as of such date by (ii) the original aggregate face amount of the Certificates of such series. The Pool Factor as of any Regular Distribution Date or Special Distribution Date with respect to such series shall be computed after giving effect to the payment of principal, if any, on the Equipment Notes or other Trust Property held in the Trust relating to such series and the distribution thereof to be made on such date.

Postponed Notes: Means, with respect to any Trust or the related series of Certificates, the Equipment Notes to be held in such Trust as to which a Postponement Notice shall have been delivered pursuant to Section 2.02(b).

Postponement Notice: Means, with respect to any Trust or the related series of Certificates, an Officer’s Certificate of the Company (i) requesting that the Trustee temporarily postpone purchase of the related Equipment Notes to a date later than the Issuance Date of such series of Certificates, (ii) identifying the amount of the purchase price of each such Equipment Note and the aggregate purchase price for all such Equipment Notes, (iii) setting forth the reasons for such postponement and (iv) with respect to each such Equipment Note, either (a) setting or resetting a new Transfer Date (which shall be on or prior to the applicable Cut-off Date) for payment by the Trustee of such purchase price and issuance of the related Equipment Note (subject to subsequent change from time to time in accordance with the relevant Note Purchase Agreement), or (b) indicating that such new Transfer Date (which shall be on or prior to the applicable Cut-off Date) will be set by subsequent written notice not less than one Business Day prior to such new Transfer Date (subject to subsequent change from time to time in accordance with the relevant Note Purchase Agreement).

Potential Purchaser: Has the meaning, with respect to any Certificateholder, specified in Section 6.01(d).

Purchasing Certificateholder: Has the meaning, with respect to any Certificateholder, specified in Section 6.01(d).

Rating Agency: Has the meaning specified in the Intercreditor Agreement.

Record Date: Means, with respect to any Trust or the related series of Certificates, (i) for Scheduled Payments to be distributed on any Regular Distribution Date, other than the final distribution with respect to such series, the 15th day (whether or not a Business Day) preceding such Regular Distribution Date, or such other date as shall be specified for such series in the applicable Trust Supplement, and (ii) for Special Payments to be distributed on any Special Distribution Date, other than the final distribution with respect to such series, the 15th day (whether or not a Business Day) preceding such Special Distribution Date, or such other date as shall be specified for such series in the applicable Trust Supplement.

8

Register: Has the meaning, with respect to the Certificates of any series, specified in Section 3.04.

Registrar: Has the meaning, with respect to the Certificates of any series, specified in Section 3.04 and includes the registrar appointed pursuant to Sections 3.04 and 7.12.

Regular Distribution Date: Means, with respect to distributions of Scheduled Payments in respect of any series of Certificates, each date designated as such in this Agreement, until payment of all the Scheduled Payments to be made under the Equipment Notes held in the Trust have been made or until such Equipment Notes have been redeemed or otherwise prepaid in full.

Request: Means a request by the Company setting forth the subject matter of the request accompanied by an Officer’s Certificate and an Opinion of Counsel as provided in Section 1.02 of this Basic Agreement.

Responsible Officer: Means, with respect to any Trustee, any Loan Trustee and any Owner Trustee, any officer in the Corporate Trust Department or similar department of the Trustee, such Loan Trustee or such Owner Trustee, as the case may be, or any other officer customarily performing functions similar to those performed by the persons who at the time shall be such officers or to whom any corporate trust matter is referred because of his knowledge of and familiarity with a particular subject.

Responsible Party: Means, with respect to the Certificates of any series, the Company or the other Person designated as such in the related Trust Supplement.

Scheduled Payment: Means, with respect to any Equipment Note, except to the extent otherwise provided in the applicable Trust Supplement, (i) any payment of principal or interest on such Equipment Note (other than any such payment which is not in fact received by the Trustee or the applicable Subordination Agent within five days after the date on which such payment is scheduled to be made) or (ii) any distribution in respect of principal or interest on such Equipment Note to the Holders of the Certificates of any series with funds drawn under the Liquidity Facility for such series (other than any such payment which is not in fact received by the Trustee or the applicable Subordination Agent within five days after the date upon which payment is scheduled to be made), which payment in the case of clause (i) or clause (ii) represents an installment of principal on such Equipment Note at the stated maturity of such installment, or the payment of regularly scheduled interest accrued on the unpaid principal amount of such Equipment Note, or both; provided, however, that any payment of principal, premium, if any, or interest resulting from the redemption or purchase of any Equipment Note shall not constitute a Scheduled Payment.

SEC: Means the Securities and Exchange Commission, as from time to time constituted or created under the Securities Exchange Act of 1934, as amended, or, if at any time after the execution of this instrument such Commission is not existing and performing the duties now assigned to it under the Trust Indenture Act, then the body performing such duties on such date.

9

Securities Act: Means the Securities Act of 1933, as amended.

Selling Certificateholder: Has the meaning, with respect to any Certificateholder, specified in Section 6.01(d).

Special Distribution Date: Means, with respect to the Certificates of any series, each date on which a Special Payment is to be distributed as specified in this Agreement.

Special Payment: Means, except to the extent otherwise provided in the applicable Trust Supplement, (i) any payment (other than a Scheduled Payment) in respect of, or any proceeds of, any Equipment Note held in a Trust or the Collateral or Trust Indenture Estate, as the case may be (in each case, as defined in each Indenture relating to such Trust), (ii) the amounts required to be distributed pursuant to the last paragraph of Section 2.02(b), or (iii) the amounts required to be distributed pursuant to the penultimate paragraph of Section 2.02(b).

Special Payments Account: Means, with respect to the Certificates of any series, the account or accounts created and maintained for such series pursuant to Section 4.01(b) and the related Trust Supplement.

Specified Investments: Means, with respect to any Trust, unless otherwise specified in the related Trust Supplement, (i) obligations of the United States Government or agencies thereof, or obligations guaranteed by the United States Government, (ii) open market commercial paper of any corporation incorporated under the laws of the United States of America or any State thereof rated at least P-2 or its equivalent by Moody’s Investors Service, Inc. or at least A-2 or its equivalent by Standard & Poor’s Ratings Services, a Standard & Poor’s Financial Services LLC business (including the Trustee if such conditions are met), (iii) certificates of deposit issued by commercial banks organized under the laws of the United States or of any political subdivision thereof having a combined capital and surplus in excess of $500,000,000 which banks or their holding companies have a rating of A or its equivalent by Moody’s Investors Service, Inc. or A2 or its equivalent by Standard & Poor’s Ratings Services, a Standard & Poor’s Financial Services LLC business (including the Trustee if such conditions are met); provided, however, that the aggregate amount at any one time so invested in certificates of deposit issued by any one bank shall not exceed 5% of such bank’s capital and surplus, (iv) U.S. dollar denominated offshore certificates of deposit issued by, or offshore time deposits with, any commercial bank described in clause (iii) above or any subsidiary thereof, and (v) repurchase agreements with any financial institution having combined capital and surplus of at least $500,000,000 (including the Trustee if such conditions are met) with any of the obligations described in clauses (i) through (iv) as collateral; provided further that if all of the above investments are unavailable, the entire amounts to be invested may be used to purchase federal funds from an entity described in clause (iii) above; and provided further that no investment shall be eligible as a “Specified Investment” unless the final maturity or date of return of

10

such investment is on or before the Special Distribution Date next following the Cut-off Date for such Trust by at least 15 days. The Trustee is hereby authorized, in making or disposing of any investment described herein, to deal with itself (in its individual capacity) or with any one or more of its Affiliates, whether it or such Affiliate is acting as an agent of the Trustee or for any third person or dealing as principal for its own account.

Subordination Agent: Has the meaning, with respect to the Certificates of any series, specified therefor in the relevant Intercreditor Agreement.

Substitute Aircraft: Means, with respect to any Trust, any Aircraft of a type specified in this Agreement and, at the election of the Company, substituted prior to the applicable Cut-off Date, if any, pursuant to the terms of this Agreement.

Transfer Date: Has the meaning, with respect to the Certificates of any series, assigned to that term or any of the terms “Delivery Date”, “Funding Date” or “Closing Date” in any relevant Note Purchase Agreement, and in any event refers to any such date as it may be changed from time to time in accordance with the terms of such Note Purchase Agreement.

Triggering Event: Has the meaning, with respect to the Certificates of any series, specified therefor in the relevant Intercreditor Agreement.

Trust: Means, with respect to the Certificates of any series, the separate trust created under this Agreement.

Trust Indenture Act: Except as otherwise provided in Section 9.06, means, with respect to any particular Trust, the Trust Indenture Act of 1939, as amended and in force at the date as of which the related Trust Supplement was executed.

Trust Property: Means, with respect to any Trust, except to the extent otherwise provided in the applicable Trust Supplement, (i) subject to any related Intercreditor Agreement, the Equipment Notes held as the property of such Trust, all monies at any time paid thereon and all monies due and to become due thereunder, (ii) debt instruments issued by the Company in accordance with the first paragraph of Section 2.02(b), (iii) funds from time to time deposited in the related Escrow Account, the related Certificate Account and the related Special Payments Account and, subject to any related Intercreditor Agreement, any proceeds from the sale by the Trustee pursuant to Article VI hereof of any Equipment Note referred to in clause (i) above, (iv) all rights of such Trust and the Trustee, on behalf of the Trust, under any Intercreditor Agreement or Liquidity Facility, including, without limitation, all rights to receive all monies and other property payable thereunder, and (v) all monies or other property receivable under any Intercreditor Agreement or Liquidity Facility for such Trust.

Trust Supplement: Means an agreement supplemental hereto pursuant to which (i) a separate Trust is created for the benefit of the Holders of the Certificates of a series, (ii) the issuance of the Certificates of such series representing fractional undivided interests in such Trust is authorized and (iii) the terms of the Certificates of such series are established, as such agreement may from time to time be supplemented, amended or otherwise modified.

11

Trustee: Means, with respect to any particular Trust, the institution executing this Agreement as the Trustee, or its successor in interest, and any successor or other trustee appointed as provided herein (it being understood that the same institution need not act as the Trustee in respect of all of the Trusts created pursuant to this Basic Agreement and the Trust Supplements) , in each case, not in its individual capacity but solely as trustee under this Agreement.

Trustee’s Liens: Has the meaning specified in Section 7.17.

Section 1.02 Compliance Certificates and Opinions . Upon any application or request (except with respect to matters set forth in Article II) by the Company, any Owner Trustee or any Loan Trustee to the Trustee to take any action under any provision of this Basic Agreement or, in respect of the Certificates of any series, this Agreement, the Company, such Owner Trustee or such Loan Trustee, as the case may be, shall furnish to the Trustee (i) an Officer’s Certificate stating that, in the opinion of the signer or signers, all conditions precedent, if any, provided for in this Basic Agreement or this Agreement relating to the proposed action have been complied with and (ii) an Opinion of Counsel stating that in the opinion of such counsel all such conditions precedent, if any, have been complied with, except that in the case of any such application or request as to which the furnishing of such documents is specifically required by any provision of this Basic Agreement or this Agreement relating to such particular application or request, no additional certificate or opinion need be furnished. Every certificate or opinion with respect to compliance with a condition or covenant provided for in this Basic Agreement or, in respect of the Certificates of any series, this Agreement (other than a certificate provided pursuant to Section 8.04(d)) or any Trust Supplement shall include:

(1) a statement that each individual signing such certificate or opinion has read such covenant or condition and the definitions in this Basic Agreement or this Agreement relating thereto;

(2) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based;

(3) a statement that, in the opinion of each such individual, he has made such examination or investigation as is necessary to enable him to express an informed opinion as to whether or not such covenant or condition has been complied with; and

(4) a statement as to whether, in the opinion of each such individual, such condition or covenant has been complied with.

Section 1.03 Form of Documents Delivered to Trustee . In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an

opinion with respect to some matters and one or more other such Persons as to other matters and any such Person may certify or give an opinion as to such matters in one or several documents.

12

Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or other instruments under this Basic Agreement or, in respect of the Certificates of any series, this Agreement, they may, but need not, be consolidated and form one instrument.

Section 1.04 Directions of Certificateholders . (a) Any direction, consent, request, demand, authorization, notice, waiver or other action provided by this Agreement or in respect of the Certificates of any series to be given or taken by Certificateholders (a “Direction”) may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Certificateholders in person or by an agent or proxy duly appointed in writing; and, except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments are delivered to the Trustee and, when it is expressly required pursuant to this Agreement, to the Company or any Loan Trustee. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the “Act” of the Certificateholders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent or proxy shall be sufficient for any purpose of this Agreement and conclusive in favor of the Trustee, the Company and the related Loan Trustee, if made in the manner provided in this Section 1.04.

(b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the certificate of any notary public or other officer of any jurisdiction authorized to take acknowledgments of deeds or administer oaths that the Person executing such instrument acknowledged to him the execution thereof, or by an affidavit of a witness to such execution sworn to before any such notary or such other officer, and where such execution is by an officer of a corporation or association or a member of a partnership, on behalf of such corporation, association or partnership, such certificate or affidavit shall also constitute sufficient proof of his authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other reasonable manner which the Trustee deems sufficient.

(c) In determining whether the Certificateholders of the requisite Fractional Undivided Interests of Certificates of any series Outstanding have given any Direction under this Agreement, Certificates owned by the Company, any related Owner Trustee, any related Owner Participant or any Affiliate of any such Person shall be disregarded and deemed not to be Outstanding for purposes of any such determination. In determining whether the Trustee shall be protected in relying upon any such Direction, only Certificates which the Trustee knows to be so owned shall be so disregarded. Notwithstanding the foregoing, (i) if any such Person owns 100% of the Certificates of any series Outstanding, such Certificates shall not be so disregarded, and (ii) if any amount of Certificates of any series owned by any such Person have been pledged in good faith, such Certificates shall not be disregarded if the pledgee establishes to the satisfaction of the Trustee the pledgee’s right so to act with respect to such Certificates and that the pledgee is not the Company, any related Owner Trustee, any related Owner Participant or any Affiliate of any such Person.

13

(d) The Company may, at its option, by delivery of an Officer’s Certificate to the Trustee, set a record date to determine the Certificateholders in respect of the Certificates of any series entitled to give any Direction. Notwithstanding Section 316(c) of the Trust Indenture Act, such record date shall be the record date specified in such Officer’s Certificate, which shall be a date not more than 30 days prior to the first solicitation of Certificateholders of the applicable series in connection therewith. If such a record date is fixed, such Direction may be given before or after such record date, but only the Certificateholders of record of the applicable series at the close of business on such record date shall be deemed to be Certificateholders for the purposes of determining whether Certificateholders of the requisite proportion of Outstanding Certificates of such series have authorized or agreed or consented to such Direction, and for that purpose the Outstanding Certificates of such series shall be computed as of such record date; provided, however, that no such Direction by the Certificateholders on such record date shall be deemed effective unless it shall become effective pursuant to the provisions of this Agreement not later than one year after such record date. Nothing in this paragraph shall be construed to prevent the Company from setting a new record date for any action for which a record date has previously been set pursuant to this paragraph (whereupon the record date previously set shall automatically and with no action by any Person be deemed cancelled and of no effect).

(e) Any Direction by the Holder of any Certificate shall bind the Holder of every Certificate issued upon the transfer thereof or in exchange therefor or in lieu thereof, whether or not notation of such Direction is made upon such Certificate.

(f) Except as otherwise provided in Section 1.04(c), Certificates of any series owned by or pledged to any Person shall have an equal and proportionate benefit under the provisions of this Agreement, without preference, priority or distinction as among all of the Certificates of such series.

(g) The Company and the Trustee may make reasonable rules for action by or at a meeting of Certificateholders.

ARTICLE II.

ORIGINAL ISSUANCE OF CERTIFICATES;

ACQUISITION OF TRUST PROPERTY

Section 2.01 Amount Unlimited; Issuable in Series . (a) The aggregate face amount of Certificates that may be authenticated and delivered under this Basic Agreement is unlimited. The Certificates may be issued from time to time in one or more series and shall be designated generally as the “Pass Through Certificates”, with such further designations added or incorporated in such title for the Certificates of each series as are specified in the related Trust Supplement. Each Certificate shall bear upon its face the designation so selected for the series to which it belongs. All Certificates of the same series shall be substantially identical except that the Certificates of a series may differ as to denomination and as may otherwise be provided in the Trust Supplement establishing the Certificates of such series. Each series of Certificates issued pursuant to this Agreement will evidence fractional undivided interests in the related Trust and, except as may be specified in any Intercreditor Agreement or in the applicable Trust Supplement, will have no rights, benefits or interests in respect of any other Trust or the Trust Property held therein. All Certificates of the same series shall be in all respects equally and

14

ratably entitled to the benefits of this Agreement without preference, priority or distinction on account of the actual time or times of authentication and delivery, all in accordance with the terms and provisions of this Agreement.

(b) The following matters shall be established with respect to the Certificates of each series issued hereunder by a Trust Supplement executed and delivered (x) by and between the Company and the Trustee, or (y) if the Parent will guarantee the obligations of the Company under any Equipment Notes or any Leases related to Equipment Notes to be acquired and held in the Trust formed by such Trust Supplement, by and among the Parent, the Company and the Trustee:

(1) the formation of the Trust as to which the Certificates of such series represent fractional undivided interests and its designation (which designation shall distinguish such Trust from each other Trust created under this Basic Agreement and a Trust Supplement);

(2) the specific title of the Certificates of such series (which title shall distinguish the Certificates of such series from each other series of Certificates created under this Basic Agreement and a Trust Supplement);

(3) subject to Section 2.01(a) hereof, any limit upon the aggregate face amount of the Certificates of such series which may be authenticated and delivered under this Basic Agreement (which limit shall not pertain to Certificates authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Certificates of the series pursuant to Sections 3.03, 3.04, 3.05(d) and 3.06);

(4) the Cut-off Date with respect to the Certificates of such series and the related Trust;

(5) the Regular Distribution Dates applicable to the Certificates of such series;

(6) the Special Distribution Dates applicable to the Certificates of such series;

(7) if other than as provided in Section 3.04 or Section 7.12(b), the Registrar or the Paying Agent for the Certificates of such series, including any Co-Registrar or additional Paying Agent;

(8) if other than as provided in Section 3.01, the denominations in which the Certificates of such series shall be issuable;

(9) if other than United States dollars, the currency or currencies (including composite currencies or currency units) in which the Certificates of such series shall be denominated or payable, in whole or in part;

the specific form of the Certificates of such series (including the interest rate applicable thereto) and whether or not Certificates of such series are to be issued as Book-Entry Certificates and, if such Certificates are to be Book-Entry Certificates, the form of Letter of Representations, if any (or, in the case of any

15

Certificates denominated or payable in a currency other than United States dollars and if other than as provided in Section 3.05, whether and the circumstances under which beneficial owners of interests in such Certificates in permanent global form may exchange such interests for Certificates of such series and of like tenor of any authorized form and denomination);

(10) a description of the Equipment Notes, and, if applicable, of any notes issued by a trust or other entity secured by Equipment Notes, to be acquired and held in the Trust formed by such Trust Supplement and of the related Aircraft, if determined, and Note Documents, if determined;

(11) provisions with respect to the terms for which the definitions set forth in Article I hereof or the terms of any Section hereof, including Section 11.01 hereof, permit or require further specification in the related Trust Supplement;

(12) any restrictions (including legends) in respect of ERISA or tax matters;

(13) the acceptance of appointment by the institution named to act as Trustee with respect to such Trust, if different from the institution executing this Basic Agreement or its successor;

(14) whether such series will be subject to an Intercreditor Agreement and, if so, the specific designation of such Intercreditor Agreement and the rights of Potential Purchasers upon the occurrence of a Triggering Event;

(15) whether such series will have the benefit of a Liquidity Facility or any interest rate swap, interest rate cap, option, forward contract or other derivative contract or other form of credit enhancement and, if so, any terms appropriate thereto;

(16) whether the Parent will guarantee the obligations of the Company under any Equipment Notes or any Leases related to Equipment Notes to be acquired and held in the Trust formed by such Trust Supplement and, if so, the specific form of such Parent Guarantee or Parent Guarantees and a statement that the Parent shall be an “obligor” as such term is defined in and solely for purposes of the Trust Indenture Act and shall be required to comply with those provisions of this Agreement compliance with which is required by an “obligor” under the Trust Indenture Act;

(17) whether there will be a deposit agreement, escrow agreement or other arrangement prior to the delivery of one or more Aircraft or the commencement of the Lease in respect of one or more Aircraft and, if so, any terms appropriate thereto;

(18) the extent, if any, to which the Company may acquire Certificates and deliver such Certificates or cash to the respective Trusts and obtain the release of Equipment Notes or other Trust Property held by such Trusts;

(19) if the Certificates of such series are to be issued in bearer form, the forms thereof and any other special terms relating thereto;

16

(20) the “Responsible Party” for purposes of directing the Trustee to make Specified Investments; and

(21) any other terms of the Certificates of such series or any related Parent Guarantee (which terms shall not be inconsistent with the provisions of the Trust Indenture Act but may modify, amend, supplement or delete any of the terms of this Basic Agreement), including any terms of the Certificates of such series which may be required or advisable under United States laws or regulations or advisable (as determined by the Company) in connection with the marketing of Certificates of the series.

(c) At any time and from time to time after the execution and delivery of this Basic Agreement and a Trust Supplement forming a Trust and establishing the terms of Certificates of a series, Certificates of such series shall be executed, authenticated and delivered by the Trustee to the Person or Persons specified by the Company upon request of the Company and upon satisfaction or waiver of any conditions precedent set forth in such Trust Supplement or in any other document to which a Trustee is a party relating to the issuance of the Certificates of such series.

Section 2.02 Acquisition of Equipment Notes . Unless otherwise specified in the related Trust Supplement:

(a) On or prior to the Issuance Date of the Certificates of a series, the Trustee shall execute and deliver the related Note Purchase Agreements in the form delivered to the Trustee by the Company. Unless otherwise specified in the related Trust Supplement, the Trustee shall issue and sell such Certificates, in authorized denominations and in such Fractional Undivided Interests, so as to result in the receipt of consideration in an amount equal to the aggregate purchase price of the Equipment Notes (and/or, if applicable, any notes issued by a trust or other entity secured by Equipment Notes) contemplated to be purchased by the Trustee under the related Note Purchase Agreements and, concurrently therewith (unless the Company shall have delivered to the Trustee the Postponement Notice relating to one or more Postponed Notes pursuant to Subsection (b) below), the Trustee shall purchase, pursuant to the terms and conditions of the Note Purchase Agreements, such Equipment Notes (except Postponed Notes, if any)(or other notes) at a purchase price equal to the amount of such consideration so received. Except as provided in Sections 3.03, 3.04, 3.05 and 3.06 hereof, the Trustee shall not execute, authenticate or deliver Certificates of such series in excess of the aggregate amount specified in this paragraph. The provisions of this Subsection (a) are subject to the provisions of Subsection (b) below.

(b) If on or prior to the Issuance Date with respect to a series of Certificates the Company shall deliver to the Trustee a Postponement Notice relating to one or more Postponed Notes, the Trustee shall postpone the purchase of such Postponed Notes and shall deposit into an escrow account (as to the related Trust, the “Escrow Account”) to be maintained as part of the related Trust an amount equal to the purchase price of such Postponed Notes (the “Escrowed Funds”). The portion of the Escrowed Funds so deposited with respect to any particular Postponed Notes shall be invested (a) by the Trustee at the direction and risk of, and for the benefit of, the Responsible Party in Specified Investments or (b) if provided in the Trust Supplement relating to such series of Certificates and subject to the terms and conditions set

17

forth therein, in debt instruments of the Company, in each case (i) maturing no later than any scheduled Transfer Date relating to such Postponed Notes, or (ii) if no such Transfer Date has been scheduled, maturing on the next Business Day, or (iii) if subsequent to the giving of the applicable Postponement Notice the Company has given notice to the Trustee that such Postponed Notes will not be issued, maturing on the next applicable Special Distribution Date, if such investments are reasonably available for purchase. The Trustee shall make withdrawals from the Escrow Account only as provided in this Agreement. Upon request of the Company on one or more occasions and the satisfaction or waiver of the closing conditions specified in the applicable Note Purchase Agreements on or prior to the related Cut-off Date, the Trustee shall purchase the applicable Postponed Notes, on the terms specified in such Note Purchase Agreements, with the Escrowed Funds withdrawn from the Escrow Account.

The Trustee shall hold all Specified Investments until the maturity thereof and will not sell or otherwise transfer Specified Investments. If Specified Investments held in an Escrow Account mature prior to any applicable Transfer Date, any proceeds received on the maturity of such Specified Investments (other than any earnings thereon) shall be reinvested by the Trustee at the written direction and risk of, and for the benefit of, the Responsible Party in Specified Investments maturing as provided in the preceding paragraph.

Subject to the provisions of the Intercreditor Agreement, any earnings on Specified Investments received from time to time by the Trustee shall be promptly distributed to the Responsible Party. The Responsible Party shall pay to the Trustee for deposit to the relevant Escrow Account an amount equal to any net losses on any Specified Investments made at its direction and risk as incurred. On any Regular Distribution Date in respect of the Certificates of any series occurring prior to the date of purchase of any Postponed Notes by the Trustee, the Responsible Party will pay (in immediately available funds) to the Trustee an amount equal to the interest that would have accrued on such Postponed Notes if such Postponed Notes had been purchased on the later of the Issuance Date or the previous Regular Distribution Date in respect of the Certificates of such series to, but not including, such Regular Distribution Date. On the first Regular Distribution Date in respect of the Certificates of any series following the purchase of any Postponed Notes by the Trustee, the Responsible Party will pay (in immediately available funds) to the Trustee an amount equal to the interest that would have accrued on such Postponed Notes if such Postponed Notes had been purchased on the later of the Issuance Date or the previous Regular Distribution Date in respect of the Certificates of such series to, but not including, the date of the purchase of such Postponed Notes by the Trustee.

If, in respect of the Certificates of any series, the Company notifies the Trustee prior to the Cut-off Date that any Postponed Notes will not be issued on or prior to the Cut-off Date for any reason, on the next Special Distribution Date for such Certificates occurring not less than 15 days following the date of such notice, (i) the Responsible Party shall pay (in immediately available funds) to the Trustee for deposit in the related Special Payments Account, an amount equal to the interest that would have accrued on the Postponed Notes designated in such notice from the later of the Issuance Date or the previous Regular Distribution Date in respect of the Certificates of such series to, but not including, such Special Distribution Date and (ii) the Trustee shall transfer an amount equal to that amount of Escrowed Funds that would have been used to purchase the Postponed Notes designated in such notice and the amount paid by the Responsible Party pursuant to the immediately preceding clause (i) to the related Special Payments Account for distribution as a Special Payment in accordance with the provisions hereof.

18

If, on such Cut-off Date, an amount equal to less than all of the Escrowed Funds (other than Escrowed Funds referred to in the immediately preceding paragraph) has been used to purchase Postponed Notes, on the next Special Distribution Date occurring not less than 15 days following such Cut-off Date (i) the Responsible Party shall pay to the Trustee for deposit in such Special Payments Account, in immediately available funds, an amount equal to the interest that would have accrued on such Postponed Notes contemplated to be purchased with such unused Escrowed Funds (other than Escrowed Funds referred to in the immediately preceding paragraph) but not so purchased from the later of the Issuance Date or the previous Regular Distribution Date in respect of the Certificates of such series to, but not including, such Special Distribution Date and (ii) the Trustee shall transfer such unused Escrowed Funds and the amount paid by the Responsible Party pursuant to the immediately preceding clause (i) to such Special Payments Account for distribution as a Special Payment in accordance with the provisions hereof.

Section 2.03 Acceptance by Trustee . The Trustee, by the execution and delivery of a Trust Supplement creating a Trust and establishing a series of Certificates, shall acknowledge its acceptance of all right, title and interest in and to the Trust Property to be acquired pursuant to Section 2.02 hereof and the related Note Purchase Agreements and shall declare that the Trustee holds and will hold such right, title and interest for the benefit of all then present and future Certificateholders of such series, upon the trusts herein and in such Trust Supplement set forth. By the acceptance of each Certificate of such series issued to it under this Agreement, each initial Holder of such series as grantor of such Trust shall thereby join in the creation and declaration of such Trust. No Certificateholder of any series shall have legal title to any part of the Trust Property of the related Trust.

Section 2.04 Limitation of Powers . Each Trust shall be constituted solely for the purpose of making the investment in the Equipment Notes provided for in the related Trust Supplement, and, except as set forth herein or in such related Trust Supplement, the Trustee shall not be authorized or empowered to acquire any other investments or engage in any other activities. Except to the extent otherwise provided in the applicable Trust Supplement, the Trustee shall not be authorized or empowered to do anything that would cause such Trust to fail to qualify as a “grantor trust” for federal income tax purposes (including as subject to this restriction, acquiring any Aircraft (as defined in the related Indentures) by bidding such Equipment Notes or otherwise, or taking any action with respect to any such Aircraft once acquired).

ARTICLE III.

THE CERTIFICATES

Section 3.01 Form, Denomination and Execution of Certificates . Except to the extent otherwise specified in the applicable Trust Supplement, the Certificates of each series shall be issued in fully registered form without coupons and shall be substantially in the form specified in such Trust Supplement, with such omissions, variations and insertions as are permitted by this Agreement, and may have such letters, numbers or other marks of identification and such

19

legends or endorsements placed thereon as may be required to comply with any applicable laws, rules, regulations or the rules of any securities exchange on which such Certificates may be listed or to conform to any usage in respect thereof, or as may, consistently herewith, be determined by the Trustee or the officers executing such Certificates, as evidenced by the Trustee’s or such officers’ execution of the Certificates.

Except as provided in Section 3.05, the definitive Certificates of such series shall be typed, printed, lithographed or engraved or produced by any combination of these methods or may be produced in any other manner permitted by the rules of any securities exchange on which the Certificates may be listed, all as determined by the officers executing such Certificates, as evidenced by their execution of such Certificates.

Except as otherwise provided in the related Trust Supplement, the Certificates of each series shall be issued in minimum denominations of $1,000 or integral multiples thereof except that one Certificate of such series may be issued in a different denomination. The Certificates of such series shall be executed on behalf of the Trustee by manual or facsimile signature of a Responsible Officer of the Trustee. Certificates of any series bearing the manual or facsimile signature of an individual who was, at the time when such signature was affixed, authorized to sign on behalf of the Trustee shall be valid and binding obligations of the Trustee, notwithstanding that such individual has ceased to be so authorized prior to the authentication and delivery of such Certificates or did not hold such office at the date of such Certificates.

Section 3.02 Authentication of Certificates . (a) Except to the extent otherwise specified in the applicable Trust Supplement, on the Issuance Date, the Trustee shall duly execute, authenticate and deliver Certificates of each series in authorized denominations equaling in the aggregate the aggregate face amount of the Equipment Notes that may be purchased by the Trustee pursuant to the related Note Purchase Agreements, and evidencing the entire ownership of the related Trust. Thereafter, the Trustee shall duly execute, authenticate and deliver the Certificates of such series as herein provided.

(b) No Certificate of any series shall be entitled to any benefit under this Agreement, or be valid for any purpose, unless there appears on such Certificate a certificate of authentication substantially in the form set forth in the Trust Supplement relating to such series of Certificates executed by the Trustee by manual signature, and such certificate of authentication upon any Certificate shall be conclusive evidence, and the only evidence, that such Certificate has been duly authenticated and delivered hereunder. All Certificates of any series shall be dated the date of their authentication.

Section 3.03 Temporary Certificates . Until definitive Certificates are ready for delivery, the Trustee shall execute, authenticate and deliver temporary Certificates of each series. Temporary Certificates of each series shall be substantially in the form of definitive Certificates of such series but may have insertions, substitutions, omissions and other variations determined to be appropriate by the officers executing the temporary Certificates of such series, as evidenced by their execution of such temporary Certificates. If temporary Certificates of any series are issued, the Trustee will cause definitive Certificates of such series to be prepared without unreasonable delay. After the preparation of definitive Certificates of such series, the temporary Certificates shall be exchangeable for definitive Certificates upon surrender of such temporary

20

Certificates at the Corporate Trust Office or the office or agency of the Trustee designated for such purpose pursuant to Section 7.12, without charge to the Certificateholder. Upon surrender for cancellation of any one or more temporary Certificates, the Trustee shall execute, authenticate and deliver in exchange therefor a like face amount of definitive Certificates of like series, in authorized denominations and of a like Fractional Undivided Interest. Until so exchanged, such temporary Certificates shall be entitled to the same benefits under this Agreement as definitive Certificates of such series.

Section 3.04 Transfer and Exchange . The Trustee shall cause to be kept at the office or agency to be maintained by it in accordance with the provisions of Section 7.12 a register (the “Register”) for each series of Certificates in which, subject to such reasonable regulations as it may prescribe, the Trustee shall provide for the registration of Certificates of such series and of transfers and exchanges of such Certificates as herein provided. The Trustee shall initially be the registrar (the “Registrar”) for the purpose of registering such Certificates of each series and transfers and exchanges of such Certificates as herein provided.

All Certificates issued upon any registration of transfer or exchange of Certificates of any series shall be valid obligations of the applicable Trust, evidencing the same interest therein, and entitled to the same benefits under this Agreement, as the Certificates of such series surrendered upon such registration of transfer or exchange.

Upon surrender for registration of transfer of any Certificate at the Corporate Trust Office or such other office or agency, the Trustee shall execute, authenticate and deliver, in the name of the designated transferee or transferees, one or more new Certificates of like series, in authorized denominations of a like aggregate Fractional Undivided Interest.

At the option of a Certificateholder, Certificates may be exchanged for other Certificates of like series, in authorized denominations and of a like aggregate Fractional Undivided Interest, upon surrender of the Certificates to be exchanged at any such office or agency. Whenever any Certificates are so surrendered for exchange, the Trustee shall execute, authenticate and deliver the Certificates that the Certificateholder making the exchange is entitled to receive. Every Certificate presented or surrendered for registration of transfer or exchange shall be duly endorsed or accompanied by a written instrument of transfer in form satisfactory to the Trustee and the Registrar duly executed by the Certificateholder thereof or its attorney duly authorized in writing.

Except to the extent otherwise provided in the applicable Trust Supplement, no service charge shall be made to a Certificateholder for any registration of transfer or exchange of Certificates, but the Trustee shall require payment of a sum sufficient to cover any tax or governmental charge that may be imposed in connection with any transfer or exchange of Certificates. All Certificates surrendered for registration of transfer or exchange shall be cancelled and subsequently destroyed by the Trustee.

Section 3.05 Book-Entry and Definitive Certificates . (a) The Certificates of any series may be issued at the option of the Company in the form of one or more typewritten Certificates representing the Book-Entry Certificates of such series, to be delivered to The Depository Trust Company, the initial Clearing Agency, by, or on behalf of, the Company. In such case, the

21

Certificates of such series delivered to The Depository Trust Company shall initially be registered on the Register in the name of Cede & Co., the nominee of the initial Clearing Agency, and no Certificate Owner will receive a definitive certificate representing such Certificate Owner’s interest in the Certificates of such series, except as provided in Subsection (d) below. As to the Certificates of any such series (other than the one Certificate or such series issued in a denomination of other than an even multiple of $1,000), unless and until definitive, fully registered Certificates (the “Definitive Certificates”) have been issued pursuant to Subsection (d) below:

(1) the provisions of this Section 3.05 shall be in full force and effect;

(2) the Company, the Paying Agent, the Registrar and the Trustee may deal with the Clearing Agency for all purposes (including the making of distributions on the Certificates);

(3) to the extent that the provisions of this Section 3.05 conflict with any other provisions of this Agreement (other than the provisions of any Trust Supplement expressly amending this Section 3.05 as permitted by this Basic Agreement), the provisions of this Section 3.05 shall control;

(4) the rights of Certificate Owners shall be exercised only through the Clearing Agency and shall be limited to those established by law and agreements between such Certificate Owners and the Clearing Agency Participants; and until Definitive Certificates are issued pursuant to Subsection (d) below, the Clearing Agency will make book-entry transfers among the Clearing Agency Participants and receive and transmit distributions of principal, interest and premium, if any, on the Certificates to such Clearing Agency Participants;

(5) such Certificates of such series may be transferred in whole, but not in part, and in the manner provided in Section 3.04, by the Clearing Agency holding such Certificates to a nominee of such Clearing Agency, or by such Clearing Agency to a successor Clearing Agency that has been selected or approved by the Company or to a nominee of such successor Clearing Agency; and

(6) whenever this Agreement requires or permits actions to be taken based upon instructions or directions of Certificateholders of such series holding Certificates of such series evidencing a specified percentage of the Fractional Undivided Interests in the related Trust, the Clearing Agency shall be deemed to represent such percentage only to the extent that it has received instructions to such effect from Clearing Agency Participants owning or representing, respectively, such required percentage of the beneficial interest in Certificates of such series and has delivered such instructions to the Trustee. None of the Company, the Parent or the Trustee or any agent of any of them shall have any obligation to determine whether the Clearing Agency has in fact received any such instructions.

(b) Whenever notice or other communication to the Certificateholders of a series is required under this Agreement, unless and until Definitive Certificates shall have been issued pursuant to Subsection (d) below, the Trustee shall give all such notices and communications specified herein to be given to Certificateholders of such series to the Clearing Agency.

22

(c) Except as otherwise provided in the related Trust Supplement, the Trustee shall enter into the applicable Letter of Representations with respect to each series of Certificates and fulfill its responsibilities thereunder.

(d) If with respect to the Certificates of any series (i) the Company advises the Trustee in writing that the Clearing Agency is no longer willing or able to discharge properly its responsibilities and the Trustee or the Company is unable to locate a qualified successor, (ii) the Company, at its option, advises the Trustee in writing that it elects to terminate the book-entry system through the Clearing Agency or (iii) after the occurrence of an Event of Default, Certificate Owners of Book-Entry Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust, by Act of such Certificate Owners delivered to the Company and the Trustee, advise the Company, the Trustee and the Clearing Agency through the Clearing Agency Participants in writing that the continuation of a book-entry system through the Clearing Agency Participants is no longer in the best interests of the Certificate Owners of such series, then the Trustee shall notify all Certificate Owners of such series, through the Clearing Agency, of the occurrence of any such event and of the availability of Definitive Certificates. Upon surrender to the Trustee of all the Certificates of such series held by the Clearing Agency, accompanied by registration instructions from the Clearing Agency Participants for registration of Definitive Certificates in the names of Certificate Owners of such series, the Trustee shall issue and deliver the Definitive Certificates of such series in accordance with the instructions of the Clearing Agency. Neither the Company, the Registrar, the Paying Agent nor the Trustee shall be liable for any delay in delivery of such instructions and may conclusively rely on, and shall be protected in relying on, such registration instructions. Upon the issuance of Definitive Certificates of such series, the Trustee shall recognize the Persons in whose names the Definitive Certificates are registered in the Register as Certificateholders hereunder. Neither the Company nor the Trustee shall be liable if the Trustee or the Company is unable to locate a qualified successor Clearing Agency.

(e) The provisions of this Section 3.05 may be made inapplicable to any series or may be amended with respect to any series in the related Trust Supplement.

Section 3.06 Mutilated, Destroyed, Lost or Stolen Certificates . If (i) any mutilated Certificate is surrendered to the Registrar, or the Registrar receives evidence to its satisfaction of the destruction, loss or theft of any Certificate, and (ii) there is delivered to the Registrar and the Trustee such security, indemnity or bond as may be required by them to save each of them and the Company harmless, then, in the absence of notice to the Registrar or the Trustee that such destroyed, lost or stolen Certificate has been acquired by a protected purchaser (within the meaning of Article 8 of the Uniform Commercial Code in effect in any applicable jurisdiction), and provided that the requirements of Section 8-405 of the Uniform Commercial Code in effect in any applicable jurisdiction are met, the Trustee shall execute, authenticate and deliver, in exchange for or in lieu of any such mutilated, destroyed, lost or stolen Certificate, a new Certificate or Certificates of like series, in authorized denominations and of like Fractional Undivided Interest and bearing a number not contemporaneously outstanding.

23

In connection with the issuance of any new Certificate under this Section 3.06, the Trustee shall require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee and the Registrar) connected therewith.

Any duplicate Certificate issued pursuant to this Section 3.06 shall constitute conclusive evidence of the appropriate Fractional Undivided Interest in the related Trust, as if originally issued, whether or not the lost, stolen or destroyed Certificate shall be found at any time.

The provisions of this Section 3.06 are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Certificates.

Section 3.07 Persons Deemed Owners . Prior to due presentment of a Certificate for registration of transfer, the Company, the Trustee, the Registrar and any Paying Agent shall deem and treat the Person in whose name any Certificate is registered (as of the day of determination) on the Register as the owner of such Certificate and the Certificateholder for the purpose of receiving distributions pursuant to Article IV and for all other purposes whatsoever, and none of the Company, the Trustee, the Registrar or any Paying Agent shall be affected by any notice to the contrary. All payments or distributions made to any such Person shall be valid and, to the extent of the sum or sums so paid, effectual to satisfy and discharge the liability for moneys payable on any such Certificate.

Unless otherwise provided with respect to any Certificates pursuant to Section 2.01(b), the Company, the Parent, any other obligor upon any Certificates and any Affiliate of any thereof may acquire, tender for, purchase, own, hold, become the pledgee of and otherwise deal with any Certificates.

Section 3.08 Cancellation . All Certificates surrendered for payment or transfer or exchange shall, if surrendered to the Trustee or any agent of the Trustee other than the Registrar, be delivered to the Registrar for cancellation and shall promptly be cancelled by it. No Certificates shall be authenticated in lieu of or in exchange for any Certificates cancelled as provided in this Section 3.08, except as expressly permitted by this Agreement. All cancelled Certificates held by the Registrar shall be destroyed and a certification of their destruction delivered to the Trustee.

Section 3.09 Limitation of Liability for Payments . All payments and distributions made to Certificateholders of any series in respect of the Certificates of such series shall be made only from the Trust Property of the related Trust and only to the extent that the Trustee shall have sufficient income or proceeds from such Trust Property to make such payments in accordance with the terms of Article IV of this Agreement. The Certificates do not represent indebtedness of the related Trusts, and references herein or in any Trust Supplement to interest accruing on any Certificates are intended for purposes of computation only. Each Certificateholder, by its acceptance of a Certificate, agrees that it will look solely to the income and proceeds from the Trust Property of the related Trust for any payment or distribution due to such Certificateholder pursuant to the terms of this Agreement and that it will not have any recourse to the Company, the Trustee, the Loan Trustees, any Owner Trustee or any Owner Participant except as otherwise expressly provided in this Agreement, in any Note Document or in any related Intercreditor Agreement.

24

The Company is a party to this Agreement solely for purposes of meeting the requirements of the Trust Indenture Act, and therefore shall not have any right, obligation or liability hereunder, or under the terms of any Trust Supplement or any Certificates (except as otherwise expressly provided herein or therein).

Section 3.10 CUSIP Numbers . The Certificates may include “CUSIP” numbers (if then generally in use), and if so, the Trustee may use the CUSIP numbers in notices in respect of the Certificates; provided, however, that any such notice may state that no representation is made as to the correctness or accuracy of the CUSIP number printed in the notice or on the Certificates, that reliance may be placed only on the other identification numbers printed on the Certificates, and any such notice shall not be affected by any defect or omission of such CUSIP numbers.

ARTICLE IV.

DISTRIBUTIONS; STATEMENTS TO CERTIFICATEHOLDERS

Section 4.01 Certificate Account and Special Payments Account . (a) The Trustee shall establish and maintain on behalf of the Certificateholders of each series a Certificate Account as one or more non-interest-bearing accounts. The Trustee shall hold such Certificate Account in trust for the benefit of the Certificateholders of such series, and shall make or permit withdrawals therefrom only as provided in this Agreement or any Intercreditor Agreement. On each day when a Scheduled Payment is made to the Trustee or the Subordination Agent, as the case may be, as holder of the Equipment Notes issued under the related Indenture, with respect to the Certificates of any series, the Trustee, upon receipt of the payments to it, shall immediately deposit the aggregate amount of such Scheduled Payment in the applicable Certificate Account.

(b) The Trustee shall establish and maintain on behalf of the Certificateholders of each series a Special Payments Account as one or more accounts, which shall be non-interest bearing except as provided in Section 4.04. The Trustee shall hold the Special Payments Account in trust for the benefit of the Certificateholders of such series and shall make or permit withdrawals therefrom only as provided in this Agreement or any Intercreditor Agreement. On each day when one or more Special Payments are made to the Trustee or the Subordination Agent, as the case may be, as holder of the Equipment Notes issued under the related Indenture or to the Trustee pursuant to the last two paragraphs of Section 2.02(b) with respect to the Certificates of any series, the Trustee, upon receipt of the payments to it, shall immediately deposit the aggregate amount of such Special Payments in the applicable Special Payments Account.

(c) The Trustee shall present (or, if applicable, cause the Subordination Agent to present) to the Loan Trustee to which an Equipment Note relates such Equipment Note on the date of its stated final maturity or, in the case of any Equipment Note which is to be redeemed or purchased in whole pursuant to the related Indenture, on the applicable redemption or purchase date under such Indenture.

25

Section 4.02 Distributions from Certificate Account and Special Payments Account . (a) Subject to the provisions of any Intercreditor Agreement, on each Regular Distribution Date with respect to a series of Certificates or as soon thereafter as the Trustee has confirmed receipt of the payment of all or any part of the Scheduled Payments due on the Equipment Notes held in the related Trust on such date, the Trustee shall distribute out of the applicable Certificate Account the entire amount deposited therein pursuant to Section 4.01(a). There shall be so distributed to each Certificateholder of record of such series on the Record Date with respect to such Regular Distribution Date (other than as provided in Section 11.01 concerning the final distribution) by check mailed to such Certificateholder, at the address appearing in the Register, such Certificateholder’s pro rata share (based on the aggregate Fractional Undivided Interest in the related Trust held by such Certificateholder) of the total amount in the applicable Certificate Account, except that, with respect to Certificates registered on the Record Date in the name of a Clearing Agency (or its nominee), such distribution shall be made by wire transfer in immediately available funds to the account designated by such Clearing Agency (or such nominee).

(b) Subject to the provisions of any Intercreditor Agreement, on each Special Distribution Date with respect to any Special Payment with respect to a series of Certificates or as soon thereafter as the Trustee has confirmed receipt of any Special Payments due on the Equipment Notes held in the related Trust or realized upon the sale of such Equipment Notes, the Trustee shall distribute out of the applicable Special Payments Account the entire amount of such applicable Special Payment deposited therein pursuant to Section 4.01(b). There shall be so distributed to each Certificateholder of record of such series on the Record Date with respect to such Special Distribution Date (other than as provided in Section 11.01 concerning the final distribution) by check mailed to such Certificateholder, at the address appearing in the Register, such Certificateholder’s pro rata share (based on the aggregate Fractional Undivided Interest in the related Trust held by such Certificateholder) of the total amount in the applicable Special Payments Account on account of such Special Payment, except that, with respect to Certificates registered on the Record Date in the name of a Clearing Agency (or its nominee), such distribution shall be made by wire transfer in immediately available funds to the account designated by such Clearing Agency (or such nominee).

(c) The Trustee shall, at the expense of the Company, cause notice of each Special Payment with respect to a series of Certificates to be mailed to each Certificateholder of such series at his address as it appears in the Register. Subject to the provisions of any Intercreditor Agreement: (i) in the event of redemption or purchase of Equipment Notes held in the related Trust, such notice shall be mailed not less than 15 days prior to the Special Distribution Date for the Special Payment resulting from such redemption or purchase, which Special Distribution Date shall be the date of such redemption or purchase; (ii) in the event that the Trustee receives a notice from the Company pursuant to Section 2.02(b) that Postponed Notes will not be purchased by the Trustee, such notice of Special Payment shall be mailed as soon as practicable after receipt of such notice from the Company and shall state the Special Distribution Date for such Special Payment, which shall occur 15 days after the date of such notice of Special Payment or (if such 15th day is not practicable) as soon as practicable thereafter; (iii) in the event that any Special Payment is to be made pursuant to the last paragraph of Section 2.02(b), such notice of Special Payment shall be mailed on the Cut-off Date (or, if such mailing on the Cut-off Date is not practicable, as soon as practicable after the Cut-off Date) and shall state the Special

26

Distribution Date for such Special Payment, which shall occur 15 days after the date of such notice of Special Payment or (if such 15th day is not practicable) as soon as practicable thereafter; and (iv) in the case of any other Special Payments, such notice of Special Payment shall be mailed as soon as practicable after the Trustee has confirmed that it has received funds for such Special Payment and shall state the Special Distribution Date for such Special Payment, which shall occur 15 days after the date of such notice of Special Payment or (if such 15th day is not practicable) as soon as practicable thereafter. Notices mailed by the Trustee as provided in the paragraphs above shall set forth:

(i) the Special Distribution Date and the Record Date therefor (except as otherwise provided in Section 11.01);

(ii) the amount of the Special Payment (taking into account any payment to be made by the Responsible Party pursuant to Section 2.02(b)) for each $1,000 face amount Certificate and the amount thereof constituting principal, premium, if any, and interest;

(iii) the reason for the Special Payment; and

(iv) if the Special Distribution Date is the same date as a Regular Distribution Date for the Certificates of such series, the total amount to be received on such date for each $1,000 face amount Certificate.

If the amount of premium, if any, payable upon the redemption or purchase of an Equipment Note has not been calculated at the time that the Trustee mails notice of a Special Payment, it shall be sufficient if the notice sets forth the other amounts to be distributed and states that any premium received will also be distributed.

If any redemption or purchase of the Equipment Notes held in any Trust is cancelled, the Trustee, as soon as possible after learning thereof, shall cause notice thereof to be mailed to each Certificateholder of the related series at its address as it appears on the Register.

Section 4.03 Statements to Certificateholders . (a) On each Regular Distribution Date and Special Distribution Date, the Trustee will include with each distribution to Certificateholders of the related series a statement, giving effect to the distribution to be made on such Regular Distribution Date or Special Distribution Date, and, except to the extent otherwise provided in the applicable Trust Supplement, setting forth the following information (per $1,000 aggregate face amount of Certificate as to (i) and (ii) below):

(i) the amount of such distribution allocable to principal and the amount allocable to premium, if any;

(ii) the amount of such distribution allocable to interest; and

(iii) the Pool Balance and the Pool Factor of the related Trust.

With respect to the Certificates registered in the name of a Clearing Agency or its nominee, on the Record Date prior to each Regular Distribution Date and Special Distribution Date, the Trustee will request from the Clearing Agency a securities position listing setting forth

27

the names of all the Clearing Agency Participants reflected on the Clearing Agency’s books as holding interests in the Certificates on such Record Date. On each Regular Distribution Date and Special Distribution Date, the applicable Trustee will mail to each such Clearing Agency Participant the statement described above and will make available additional copies as requested by such Clearing Agency Participants for forwarding to holders of interests in the Certificates.

(b) Within a reasonable period of time after the end of each calendar year but not later than the latest date permitted by law, except to the extent otherwise provided in the applicable Trust Supplement, the Trustee shall furnish to each Person who at any time during such calendar year was a Certificateholder of record a statement containing the sum of the amounts determined pursuant to clauses (a)(i) and (a)(ii) above with respect to the related Trust for such calendar year or, in the event such Person was a Certificateholder of record during a portion of such calendar year, for the applicable portion of such year, and such other items as are readily available to the Trustee and which a Certificateholder may reasonably request as necessary for the purpose of such Certificateholder’s preparation of its federal income tax returns. With respect to Certificates registered in the name of a Clearing Agency or its nominee, such statement and such other items shall be prepared on the basis of information supplied to the Trustee by the Clearing Agency Participants and shall be delivered by the Trustee to such Clearing Agency Participants to be available for forwarding by such Clearing Agency Participants to the holders of interests in the Certificates.

Section 4.04 Investment of Special Payment Moneys . Any money received by the Trustee pursuant to Section 4.01(b) representing a Special Payment which is not distributed on the date received shall, to the extent practicable, be invested by the Trustee in Permitted Investments selected by the Company in telephonic (confirmed in writing) or written instructions to the Trustee pending distribution of such Special Payment pursuant to Section 4.02. Any investment made pursuant to this Section 4.04 shall be in such Permitted Investments having maturities not later than the date that such moneys are required to be used to make the payment required under Section 4.02 on the applicable Special Distribution Date and the Trustee shall hold any such Permitted Investments until maturity. Absent receipt of instructions from the Company, such Special Payment shall remain uninvested by the Trustee pending receipt of investment instructions. The Trustee shall have no liability with respect to any investment made pursuant to this Section 4.04, other than by reason of the willful misconduct or negligence of the Trustee. All income and earnings from such investments shall be distributed on such Special Distribution Date as part of such Special Payment.

ARTICLE V.

THE COMPANY

Section 5.01 Maintenance of Corporate Existence . The Company, at its own cost and expense, will do or cause to be done all things necessary to preserve and keep in full force and effect its corporate existence, rights and franchises, except as otherwise specifically permitted in Section 5.02; provided, however, that the Company shall not be required to preserve any right or franchise if the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Company.

28

Section 5.02 Consolidation, Merger, Etc . (a) The Company shall not consolidate with or merge into any other Person under circumstances where the Company is not the surviving Person or convey, transfer or lease substantially all of its assets as an entirety to any Person unless the Person formed by such consolidation or into which the Company is merged or the Person that acquires by conveyance, transfer or lease substantially all of the assets of the Company as an entirety shall be organized and validly existing under the laws of the United States of America or any state thereof or the District of Columbia, and such Person shall execute and deliver to the Trustee an agreement in form and substance reasonably satisfactory to the Trustee containing an assumption by such successor Person of the due and punctual performance and observance of each covenant and condition of this Agreement.

(b) Upon any consolidation or merger, or any conveyance, transfer or lease of substantially all of the assets of the Company as an entirety in accordance with this Section 5.02, the successor Person formed by such consolidation or into which the Company is merged or to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company under this Agreement with the same effect as if such successor Person had been named as the Company herein.

(c) The Trustee may receive an Officer’s Certificate and an Opinion of Counsel of the Company as conclusive evidence that any such consolidation, merger, conveyance, transfer or lease, and any such assumption, complies with the provisions of this Section 5.02.

ARTICLE VI.

DEFAULT

Section 6.01 Indenture Events of Default and Triggering Events . (a) If in respect of any Trust, any Indenture Event of Default shall occur and be continuing, then, and in each and every case, so long as such Indenture Event of Default shall be continuing, and subject to the provisions of any Intercreditor Agreement, the Trustee may vote all of the Equipment Notes issued under the related Indenture and held in such Trust, and, upon the direction of the Certificateholders holding Certificates evidencing Fractional Undivided Interests in such Trust aggregating not less than a majority in interest in such Trust, the Trustee shall vote not less than a corresponding majority of such Equipment Notes in favor of directing the Loan Trustee under such Indenture to declare the unpaid principal amount of the Equipment Notes then outstanding to which such Indenture Event of Default relates and accrued interest thereon to be due and payable under, and in accordance with the provisions of, the relevant Indenture. In addition, if an Indenture Event of Default shall have occurred and be continuing under any Indenture, subject to the provisions of any Intercreditor Agreement, the Trustee may in accordance with the relevant Indenture vote the Equipment Notes held in the Trust to which such Indenture Event of Default relates to direct the Loan Trustee regarding the exercise of remedies provided in such Indenture.

(b) In addition, after an Indenture Event of Default shall have occurred and be continuing with respect to any Equipment Note, subject to the provisions of any Intercreditor Agreement and the applicable Trust Supplement, the Trustee may in its discretion, and upon the direction of the Certificateholders holding Certificates evidencing Fractional Undivided Interests

29

aggregating not less than a majority in interest in the related Trust shall, by such officer or agent as it may appoint, sell, convey, transfer and deliver such Equipment Note or Equipment Notes, without recourse to or warranty by the Trustee or any Certificateholder, to any Person. In any such case, the Trustee shall sell, assign, contract to sell or otherwise dispose of and deliver such Equipment Note or Equipment Notes in one or more parcels at public or private sale or sales, at any location or locations at the option of the Trustee, all upon such terms and conditions as it may reasonably deem advisable and at such prices as it may reasonably deem advisable, for cash. If the Trustee so decides or is required to sell or otherwise dispose of any Equipment Note pursuant to this Section, the Trustee shall take such of the actions described above as it may reasonably deem most effectual to complete the sale or other disposition of such Equipment Note. Notwithstanding the foregoing, any action taken by the Trustee under this Section shall not, in the reasonable judgment of the Trustee, be adverse to the best interests of the Certificateholders of such series.

(c) If an Intercreditor Agreement is applicable, upon the occurrence and during the continuation of any Indenture Event of Default under any Indenture, the Trustee may, to the extent it is the Controlling Party at such time (as determined pursuant to the related Intercreditor Agreement), direct the exercise of remedies as provided in such related Intercreditor Agreement.

(d) If an Intercreditor Agreement is applicable, by acceptance of its Certificate, each Certificateholder agrees that at any time after the occurrence and during the continuation of a Triggering Event, each Certificateholder of Certificates of certain series (each, a “Potential Purchaser” and, collectively, the “Potential Purchasers”) may have certain rights to purchase the Certificates of one or more other series, all as set forth in the Trust Supplement applicable to the Certificates held by such Potential Purchaser. The purchase price with respect to the Certificates of any series, and the procedure for such purchase, shall be specified in such Trust Supplement or the applicable Intercreditor Agreement. By acceptance of its Certificate, each Certificateholder (each, a “Selling Certificateholder” and, collectively, the “Selling Certificateholders”) of a series that is subject to purchase by Potential Purchasers, all as set forth in the Trust Supplement applicable to the Certificates held by the Selling Certificateholders, agrees that, at any time after the occurrence and during the continuance of a Triggering Event, it will, upon payment of the applicable purchase price by one or more Potential Purchasers (upon such purchase, a “Purchasing Certificateholder”), forthwith sell, assign, transfer and convey to such Purchasing Certificateholder (without recourse, representation or warranty of any kind except for its own acts) all of the right, title, interest and obligation of such Selling Certificateholder in this Agreement, any related Intercreditor Agreement, any related Liquidity Facility, the related Note Documents and all Certificates of such series held by such Selling Certificateholder (excluding all right, title and interest under any of the foregoing to the extent such right, title or interest is with respect to an obligation not then due and payable as respects any action or inaction or state of affairs occurring prior to such sale) and the Purchasing Certificateholder shall assume all of such Selling Certificateholder’s obligations under this Agreement, any related Intercreditor Agreement, any related Liquidity Facility and the related Note Documents. The Certificates of such series will be deemed to be purchased on the date payment of the purchase price is made notwithstanding the failure of any Selling Certificateholder to deliver any Certificates of such series and, upon such a purchase, (i) the only rights of the Selling Certificateholders will be to deliver the Certificates to the Purchasing Certificateholder and receive the purchase price for such Certificates of such series and (ii) if the

30

Purchasing Certificateholder shall so request, such Selling Certificateholder will comply with all of the provisions of Section 3.04 hereof to enable new Certificates of such series to be issued to the Purchasing Certificateholder in such denominations as it shall request. All charges and expenses in connection with the issuance of any such new Certificates shall be borne by the Purchasing Certificateholder.

Section 6.02 Incidents of Sale of Equipment Notes . Upon any sale of all or any part of the Equipment Notes held in the Trust made either under the power of sale given under this Agreement or otherwise for the enforcement of this Agreement, the following shall be applicable:

(1) Certificateholders and Trustee May Purchase Equipment Notes. Any Certificateholder, the Trustee in its individual or any other capacity or any other Person may bid for and purchase any of the Equipment Notes held in the Trust, and upon compliance with the terms of sale, may hold, retain, possess and dispose of such Equipment Notes in their own absolute right without further accountability.

(2) Receipt of Trustee Shall Discharge Purchaser. The receipt of the Trustee making such sale shall be a sufficient discharge to any purchaser for its purchase money, and, after paying such purchase money and receiving such receipt, such purchaser or its personal representative or assigns shall not be obliged to see to the application of such purchase money, or be in any way answerable for any loss, misapplication or non-application thereof.

(3) Application of Moneys Received Upon Sale. Any moneys collected by the Trustee upon any sale made either under the power of sale given by this Agreement or otherwise for the enforcement of this Agreement shall be applied as provided in Section 4.02. In the event that the proceeds of such sale of Equipment Notes are less than the principal amount of the Certificates of such series Outstanding, the Certificateholders shall have no claim for such shortfall against the Company, the Trustee or any other Person including the related Owner Trustee or related Owner Participant, if any.

Section 6.03 Judicial Proceedings Instituted by Trustee; Trustee May Bring Suit . If there shall be a failure to make payment of the principal of, premium, if any, or interest on any Equipment Note held in the related Trust, or if there shall be any failure to pay Rent (as defined in the relevant Lease) under any Lease when due and payable, then the Trustee, in its own name and as trustee of an express trust, as holder of such Equipment Notes, to the extent permitted by and in accordance with the terms of any related Intercreditor Agreement and any related Note Documents (subject to rights of the applicable Owner Trustee or Owner Participant, if any, to cure any such failure to pay principal of, premium, if any, or interest on any Equipment Note or to pay Rent under any Lease in accordance with the applicable Indenture and to the rights of the Lessee under any applicable Lease), shall be entitled and empowered to institute any suits, actions or proceedings at law, in equity or otherwise, for the collection of the sums so due and unpaid on such Equipment Notes or under such Lease and may prosecute any such claim or proceeding to judgment or final decree with respect to the whole amount of any such sums so due and unpaid.

31

All rights of action and of asserting claims under this Agreement, or under any of the Certificates, may be prosecuted and enforced by the Trustee without the possession of any of such Certificates or the production thereof in any trial or other proceedings relative thereto, and any such action or proceedings instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery of judgment, subject to the payment of the expenses, disbursements and compensation of the Trustee, each predecessor Trustee and their respective agents and attorneys, shall be for the ratable benefit of the Certificateholders of the related series.

In any proceedings brought by the Trustee (and also any proceedings involving the interpretation of any provision of this Agreement, any Trust Supplement, any Intercreditor Agreement or any Liquidity Facility to which the Trustee shall be a party) the Trustee shall be held to represent all the Certificateholders of the related series, and it shall not be necessary to make any such Certificateholders parties to any such proceedings.

Section 6.04 Control by Certificateholders . Subject to Section 6.03 and any related Intercreditor Agreement, the Certificateholders holding Certificates of a series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust shall have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee with respect to such Trust or pursuant to the terms of such Intercreditor Agreement or any Liquidity Facility to which such Trustee is a party, or exercising any trust or power conferred on the Trustee under this Agreement or such Intercreditor Agreement or Liquidity Facility, including any right of the Trustee as Controlling Party under such Intercreditor Agreement or as holder of the Equipment Notes held in the related Trust; provided that:

(1) such Direction shall not in the opinion of the Trustee be in conflict with any rule of law or with this Agreement, and such Direction would not involve the Trustee in personal liability or expense unless such Certificateholders shall have offered to the Trustee reasonable security or indemnity against the cost, expenses and liabilities which might be incurred by it in compliance with such Direction;

(2) the Trustee shall not determine that the action so directed would be unjustly prejudicial to the Certificateholders of such series not taking part in such Direction;

(3) the Trustee may take any other action deemed proper by the Trustee which is not inconsistent with such Direction; and

(4) if an Indenture Event of Default under a related Indenture shall have occurred and be continuing, such direction shall not obligate the Trustee to vote more than a corresponding majority of the related Equipment Notes held by the Trust in favor of directing any action by the related Loan Trustee with respect to such Indenture Event of Default.

Section 6.05 Waiver of Past Defaults . Subject to any related Intercreditor Agreement, the Certificateholders holding Certificates of a series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust (i) may on behalf of all of the

32

Certificateholders of such series waive any past default or Event of Default hereunder and its consequences or (ii) if the Trustee is the Controlling Party, may direct the Trustee to instruct the applicable Loan Trustee to waive any past Indenture default, Indenture Event of Default or, if applicable, the corresponding Lease default, under any related Indenture and its consequences, and thereby annul any Direction given by such Certificateholders or the Trustee to such Loan Trustee with respect thereto, except a default:

(1) in the deposit of any Scheduled Payment or Special Payment under Section 4.01 or in the distribution of any payment under Section 4.02 on the Certificates of a series; or

(2) in the payment of the principal of, premium, if any, or interest, if any, on the Equipment Notes held in the related Trust; or in respect of a covenant or provision hereof which under Article IX hereof cannot be modified or amended without the consent of each Certificateholder holding an Outstanding Certificate of the series affected thereby.

Upon any such waiver, such default shall cease to exist with respect to the Certificates of such series and any Event of Default arising therefrom shall be deemed to have been cured for every purpose in respect of such series and any direction given by the Trustee on behalf of the Certificateholders of such series to the relevant Loan Trustee shall be annulled with respect thereto; but no such waiver shall extend to any subsequent or other default or Event of Default or impair any right consequent thereon. Upon any such waiver, the Trustee shall vote the Equipment Notes issued under the relevant Indenture to waive the corresponding Indenture Event of Default (and, if applicable, the corresponding Lease default).

Section 6.06 Right of Certificateholders to Receive Payments Not to Be Impaired . Anything in this Agreement (including Section 6.07) to the contrary notwithstanding, but subject to any related Intercreditor Agreement, the right of any Certificateholder to receive distributions of payments required pursuant to Section 4.02 hereof on the applicable Certificates when due, or to institute suit for the enforcement of any such payment on or after the applicable Regular Distribution Date or Special Distribution Date, shall not be impaired or affected without the consent of such Certificateholder.

Section 6.07 Certificateholders May Not Bring Suit Except Under Certain Conditions . A Certificateholder of any series shall not have the right to institute any suit, action or proceeding at law or in equity or otherwise with respect to this Agreement for the appointment of a receiver or for the enforcement of any other remedy under this Agreement, unless:

(1) such Certificateholder previously shall have given written notice to the Trustee of a continuing Event of Default;

(2) Certificateholders holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than 25% of the related Trust shall have requested the Trustee in writing to institute such action, suit or proceeding and shall have offered to the Trustee indemnity as provided in Section 7.03(e);

33

(3) the Trustee shall have refused or neglected to institute any such action, suit or proceeding for 60 days after receipt of such notice, request and offer of indemnity; and

(4) no direction inconsistent with such written request shall have been given to the Trustee during such 60-day period by Certificateholders holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust.

Except to the extent provided in any applicable Intercreditor Agreement or in any applicable Trust Supplement, it is understood and intended that no one or more of the Certificateholders of any series shall have any right in any manner whatsoever hereunder or under the related Trust Supplement or under the Certificates of such series to (i) surrender, impair, waive, affect, disturb or prejudice any property in the Trust Property of the related Trust, or the lien of any related Indenture on any property subject thereto, or the rights of the Certificateholders of such series or the holders of the related Equipment Notes, (ii) obtain or seek to obtain priority over or preference with respect to any other such Certificateholder of such series or (iii) enforce any right under this Agreement, except in the manner provided in this Agreement and for the equal, ratable and common benefit of all the Certificateholders of such series subject to the provisions of this Agreement.

Section 6.08 Remedies Cumulative . Every right or remedy given hereunder to the Trustee or to any of the Certificateholders of any series shall not be exclusive of any other right or remedy or remedies, and every such right or remedy shall be cumulative and in addition to every other right or remedy given hereunder or now or hereafter given by statute, law, equity or otherwise. No delay or omission by the Trustee or of any such Certificateholder in the exercise of any right, remedy or power or in the pursuance of any remedy shall impair any such right, power or remedy or be construed to be a waiver of any default on the part of the applicable Owner Trustee, if any, or the Company, as the case may be, or to be an acquiescence therein.

Section 6.09 Discontinuance of Proceedings . If the Trustee or any Certificateholder of any Series institutes any proceeding to enforce any right, power or remedy under the related Trust, and such proceeding is discontinued or abandoned for any reason or is determined adversely to the Trustee or such Certificateholder, then and in every such case the applicable Owner Trustee, if any, and the applicable Indenture Trustee, the Trustee, the Certificateholders of such Series and the Company shall, subject to any determination in such proceeding, be restored to their former positions and rights under such Trust with respect to the Trust Property and all rights, remedies and powers of the Trustee and such Certificateholders shall continue as if no such proceeding had been instituted.

Section 6.10 Undertaking for Costs . All parties to this Agreement, and each Certificateholder by acceptance of a Certificate, shall be deemed to have agreed that, in any suit for the enforcement of any right or remedy under this Agreement, or in any suit against the Trustee for any action taken, suffered or omitted by it as Trustee, a court may require any party litigant in such suit to file an undertaking to pay the costs of such suit, and may assess costs against any such party litigant, in the manner and to the extent provided in the Trust Indenture Act or by any other applicable law; provided, however, that neither this Section 6.10 nor the Trust Indenture Act shall be deemed to authorize any court to require such an undertaking or to make such an assessment in any suit instituted by the Company.

34

ARTICLE VII.

THE TRUSTEE

Section 7.01 Certain Duties and Responsibilities . (a) Except during the continuance of an Event of Default in respect of a Trust, (1) the Trustee undertakes to perform such duties in respect of such Trust as are specifically set forth in this Agreement, the Intercreditor Agreement and the Note Documents, and no implied covenants or obligations shall be read into such agreements against the Trustee; and (2) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Agreement; but in the case of any such certificates or opinions that by any provision hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform to the requirements of this Agreement.

(b) In case an Event of Default in respect of a Trust has occurred and is continuing, the Trustee shall exercise such of the rights and powers vested in it by this Agreement in respect of such Trust, and use the same degree of care and skill in their exercise, as a prudent person would exercise or use under the circumstances in the conduct of his or her own affairs.

(c) No provision of this Agreement shall be construed to relieve the Trustee from liability for its own negligent action, its own negligent failure to act, or its own willful misconduct, except that:

(1) this Subsection (c) shall not be construed to limit the effect of Subsection (a) of this Section 7.01; and

(2) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer of the Trustee, unless it shall be proved that the Trustee was negligent in ascertaining the pertinent facts.

(d) Whether or not herein expressly so provided, every provision of this Agreement relating to the conduct or affecting the liability of or affording protection to the Trustee shall be subject to the provisions of this Section 7.01.

Section 7.02 Notice of Defaults . As promptly as practicable after, and in any event within 90 days after, the occurrence of any default (as such term is defined below) hereunder known to the Trustee, the Trustee shall transmit by mail to the Company, any related Owner Trustees, any related Owner Participants, the related Loan Trustees and the Certificateholders holding Certificates of the related series, in the manner and to the extent provided in Section 313(c) of the Trust Indenture Act, notice of such default hereunder known to the Trustee, unless such default shall have been cured or waived; provided that, in the case of defaults not relating to the payment of money, the Trustee shall not give such notice until the earlier of the time at which such default becomes an Event of Default and the expiration of 60 days from the occurrence of such default; and provided, however, that, except in the case of a default in the payment of the

35

principal, premium, if any, or interest on any Equipment Note, the Trustee shall be protected in withholding such notice if and so long as the board of directors, the executive committee or a trust committee of directors and/or Responsible Officers of the Trustee in good faith shall determine that the withholding of such notice is in the interests of the Certificateholders of the related series. For the purpose of this Section 7.02 in respect of any Trust, the term “default” means any event that is, or after notice or lapse of time or both would become, an Event of Default in respect of that Trust or a Triggering Event under any Intercreditor Agreement.

Section 7.03 Certain Rights of Trustee . Subject to the provisions of Section 315 of the Trust Indenture Act:

(a) the Trustee may rely and shall be protected in acting or refraining from acting in reliance upon any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document believed by it to be genuine and to have been signed or presented by the proper party or parties;

(b) any request or direction of the Company mentioned herein shall be sufficiently evidenced by a Request;

(c) whenever in the administration of this Agreement or any Intercreditor Agreement the Trustee shall deem it desirable that a matter be proved or established prior to taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) may, in the absence of bad faith on its part, rely upon an Officer’s Certificate of the Company, any related Owner Trustee or any related Loan Trustee;

(d) the Trustee may consult with counsel and the advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon;

(e) the Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Agreement or any Intercreditor Agreement at the Direction of any of the Certificateholders pursuant to this Agreement or any Intercreditor Agreement, unless such Certificateholders shall have offered to the Trustee reasonable security or indemnity against the cost, expenses and liabilities which might be incurred by it in compliance with such Direction;

(f) the Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document;

(g) the Trustee may execute any of the trusts or powers under this Agreement or any Intercreditor Agreement or perform any duties under this Agreement or any Intercreditor Agreement either directly or by or through agents or attorneys, and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed with due care by it under this Agreement or any Intercreditor Agreement;

(h) the Trustee shall not be liable with respect to any action taken or omitted to be taken by it in good faith in accordance with the Direction of the Certificateholders holding Certificates of any series evidencing Fractional Undivided Interests aggregating not less than a

36

majority in interest in the related Trust relating to the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Agreement or any Intercreditor Agreement; and

(i) the Trustee shall not be required to expend or risk its own funds in the performance of any of its duties under this Agreement, or in the exercise of any of its rights or powers, if it shall have reasonable grounds for believing that repayment of such funds or adequate indemnity against such risk is not reasonably assured to it.

Section 7.04 Not Responsible for Recitals or Issuance of Certificates . The recitals contained herein and in the Certificates of each series, except the certificates of authentication, shall not be taken as the statements of the Trustee, and the Trustee assumes no responsibility for their correctness. Subject to Section 7.15, the Trustee makes no representations as to the validity or sufficiency of this Basic Agreement, any Equipment Notes, any Intercreditor Agreement, any Liquidity Facility to which the Trustee may be a party, the Certificates of any series, any Trust Supplement or any Note Documents, except that the Trustee hereby represents and warrants that this Basic Agreement has been, and each Trust Supplement, each Certificate, each Note Purchase Agreement, each Intercreditor Agreement and any such Liquidity Facility of, or relating to, each series will be, executed and delivered by one of its officers who is duly authorized to execute and deliver such document on its behalf.

Section 7.05 May Hold Certificates . The Trustee, any Paying Agent, Registrar or any of their Affiliates or any other agent, in their respective individual or any other capacity, may become the owner or pledgee of Certificates and, subject to Sections 310(b) and 311 of the Trust Indenture Act, if applicable, may otherwise deal with the Company, the Parent, any Owner Trustees, any Owner Participants or the Loan Trustees with the same rights it would have if it were not Trustee, Paying Agent, Registrar or such other agent.

Section 7.06 Money Held in Trust . Money held by the Trustee or the Paying Agent in trust under this Agreement need not be segregated from other funds except to the extent required herein or by law and neither the Trustee nor the Paying Agent shall have any liability for interest upon any such moneys except as provided for herein or in the applicable Trust Supplement.

Section 7.07 Compensation and Reimbursement . The Company agrees:

(1) to pay, or cause to be paid, to the Trustee from time to time such compensation for all services rendered by it hereunder as the Company and the Trustee may agree in writing from time to time (which compensation shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust); and

(2) except as otherwise expressly provided herein or in any Trust Supplement, to reimburse, or cause to be reimbursed, the Trustee upon its request for all reasonable out-of-pocket expenses, disbursements and advances incurred or made by the Trustee in accordance with any provision of this Basic Agreement, any Trust Supplement, any Intercreditor Agreement or any Liquidity Facility to which the Trustee may be a party (including the reasonable compensation and the expenses and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to the Trustee’s negligence, willful misconduct or bad faith or as may be incurred due to the Trustee’s breach of its representations and warranties set forth in Section 7.15; and

37

(3) to indemnify, or cause to be indemnified, the Trustee, solely in its individual capacity, for, and to hold it harmless against, any loss, liability, tax (other than any tax referred to in the next paragraph or any tax attributable to the Trustee’s compensation for serving as such), cost or expense incurred without negligence, willful misconduct or bad faith on its part, arising out of or in connection with the acceptance or administration of any Trust, including the costs and expenses of (a) defending itself against any claim or liability in connection with the exercise or performance of any of its powers or duties hereunder or under any Trust Supplement or (b) contesting the imposition of any such tax, except in each case for any such loss, liability, tax, cost or expense incurred by reason of the Trustee’s breach of its representations and warranties set forth in Section 7.15 or in any Trust Supplement or the Trustee’s failure to perform any of its obligations hereunder or under any Trust Supplement. The Trustee shall notify the Company promptly of any claim or tax for which it may seek indemnity. The Company shall defend the claim and the Trustee shall cooperate in the defense. The Trustee may have separate counsel with the consent of the Company and the Company will pay the reasonable fees and expenses of such counsel. The Company need not pay for any settlement made or any taxes paid, in settlement or otherwise, without its consent.

The Trustee shall be entitled to reimbursement from, and shall have a lien prior to the Certificates of each series upon, all property and funds held or collected by the Trustee in its capacity as Trustee with respect to such series or the related Trust for any tax incurred without negligence, bad faith or willful misconduct, on its part, arising out of or in connection with the acceptance or administration of such Trust (other than any tax attributable to the Trustee’s compensation for serving as such), including any costs and expenses incurred in contesting the imposition of any such tax. The Trustee shall notify the Company of any claim for any tax for which it may seek reimbursement. If the Trustee reimburses itself from the Trust Property of such Trust for any such tax, it will mail a brief report within 30 days setting forth the amount of such tax and the circumstances thereof to all Certificateholders of such series as their names and addresses appear in the Register.

Section 7.08 Corporate Trustee Required; Eligibility . Each Trust shall at all times have a Trustee which shall be a bank, trust company or other financial institution organized and doing business under the laws of the United States or any state thereof, shall be eligible to act as a trustee under Section 310(a) of the Trust Indenture Act and shall have a combined capital and surplus of at least $100,000,000 (or a combined capital and surplus in excess of $5,000,000 and the obligations of which, whether now in existence or hereafter incurred, are fully and unconditionally guaranteed by a corporation organized and doing business under the laws of the United States or any state or territory thereof or the District of Columbia and having a combined capital and surplus of at least $100,000,000). If such bank, trust company or other financial institution or such corporation publishes reports of conditions at least annually, pursuant to law or to the requirements of federal, state, territorial or District of Columbia supervising or examining authority, then for the purposes of this Section 7.08 the combined capital and surplus of such bank, trust company or other financial institution or such corporation shall be deemed to be its combined capital and surplus as set forth in its most recent report of conditions so published.

38

In case at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section 7.08 to act as Trustee of any Trust, the Trustee shall resign immediately as Trustee of such Trust in the manner and with the effect specified in Section 7.09. If the Trustee has or shall acquire a conflicting interest within the meaning of the Trust Indenture Act, the Trustee shall either eliminate such interest or resign, to the extent and in the manner provided by, and subject to the provisions of, the Trust Indenture Act and this Agreement.

Section 7.09 Resignation and Removal; Appointment of Successor . (a) No resignation or removal of the Trustee and no appointment of a successor Trustee of any Trust pursuant to this Article VII shall become effective until the acceptance of appointment by the successor Trustee under Section 7.10.

(b) The Trustee may resign at any time as Trustee of any or all Trusts by giving prior written notice thereof to the Company, the Authorized Agents, any related Owner Trustees and the related Loan Trustees. If an instrument of acceptance by a successor Trustee shall not have been delivered to the Company, any related Owner Trustees and the Trustee within 30 days after the giving of such notice of resignation, the resigning Trustee may petition any court of competent jurisdiction for the appointment of a successor Trustee.

(c) The Trustee may be removed at any time as Trustee of any Trust by Direction of the Certificateholders of the related series holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in such Trust delivered to the Trustee and to the Company, any related Owner Trustees and the related Loan Trustees.

(d) If at any time in respect of any Trust:

(1) the Trustee shall fail to comply with Section 310(b) of the Trust Indenture Act, if applicable, after written request therefor by the Company or by any Certificateholder who has been a bona fide Certificateholder for at least six months; or

(2) the Trustee shall cease to be eligible under Section 7.08 and shall fail to resign after written request therefor by the Company or by any such Certificateholder; or

(3) the Trustee shall become incapable of acting or shall be adjudged a bankrupt or insolvent, or a receiver of the Trustee or of its property shall be appointed or any public officer shall take charge or control of the Trustee or of its property or affairs for the purpose of rehabilitation, conservation or liquidation; then, in any such case, (i) the Company may remove the Trustee or (ii) any Certificateholder of the related series who has been a bona fide Certificateholder for at least six months may, on behalf of itself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee of such Trust.

(e) If a Responsible Officer of the Trustee shall obtain actual knowledge of an Avoidable Tax (as defined below) in respect of any Trust which has been or is likely to be

39

asserted, the Trustee shall promptly notify the Company and shall, within 30 days of such notification, either relocate the administration of the Trust to another jurisdiction as described in the definition of “Avoidable Tax” or resign as Trustee of such Trust hereunder unless within such 30-day period the Trustee shall have received notice that the Company has agreed to pay such tax. Provided that there is a corporation in a jurisdiction where there are no Avoidable Taxes that is willing to act as Trustee and is eligible under Section 7.08, the Company shall promptly after any such resignation by such Trustee appoint a successor Trustee of such Trust in a jurisdiction where there are no Avoidable Taxes. As used herein, an “Avoidable Tax” in respect of such Trust means a state or local tax: (i) upon (w) such Trust, (x) the Trust Property of such Trust, (y) Certificateholders of such Trust or (z) the Trustee for which the Trustee is entitled to seek reimbursement from the Trust Property of such Trust, and (ii) which would be avoided if the Trust were administered in a different jurisdiction in the United States or if the Trustee were located in another state, or jurisdiction within a state, within the United States. A tax shall not be an Avoidable Tax in respect of any Trust if the Company or any Owner Trustee shall agree to pay, and shall pay, such tax.

(f) If the Trustee shall resign, be removed or become incapable of acting as Trustee of any Trust or if a vacancy shall occur in the office of the Trustee of any Trust for any cause, the Company shall promptly appoint a successor Trustee of such Trust. If, within one year after such resignation, removal or incapability, or other occurrence of such vacancy, a successor Trustee of such Trust shall be appointed by Direction of the Certificateholders of the related series holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in such Trust delivered to the Company, any related Owner Trustees, the related Loan Trustee and the retiring Trustee, then the successor Trustee of such Trust so appointed shall, with the approval of the Company of such appointment, which approval shall not be unreasonably withheld, forthwith upon its acceptance of such appointment, become the successor Trustee of such Trust and supersede the successor Trustee of such Trust appointed by the Company as provided above. If no successor Trustee shall have been so appointed by the Company as provided above and accepted appointment in the manner hereinafter provided, the resigning Trustee or any Certificateholder who has been a bona fide Certificateholder of the related series for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the appointment of a successor Trustee of such Trust.

(g) The successor Trustee of a Trust shall give notice of the resignation and removal of the Trustee and appointment of the successor Trustee by mailing written notice of such event by first-class mail, postage prepaid, to the Certificateholders of the related series as their names and addresses appear in the Register. Each notice shall include the name of such successor Trustee and the address of its Corporate Trust Office.

Section 7.10 Acceptance of Appointment by Successor . Every successor Trustee appointed hereunder shall execute and deliver to the Company and to the retiring Trustee with respect to any or all Trusts an instrument accepting such appointment, and thereupon the resignation or removal of the retiring Trustee with respect to such Trust or Trusts shall become effective and such successor Trustee, without any further act, deed or conveyance, shall become vested with all the rights, powers, trusts and duties of the retiring Trustee with respect to such Trust or Trusts; but, on request of the Company or the successor Trustee, such retiring Trustee

40

shall execute and deliver an instrument transferring to such successor Trustee all such rights, powers and trusts of the retiring Trustee and shall duly assign, transfer and deliver to such successor Trustee all Trust Property held by such retiring Trustee in respect of such Trusts hereunder (subject nevertheless to its lien, if any, provided for in Section 7.07) and all books and records, or true, correct and complete copies thereof, held by such retiring Trustee in respect of such Trusts hereunder. Upon request of any such successor Trustee, the Company, the retiring Trustee and such successor Trustee shall execute and deliver any and all instruments containing such provisions as shall be necessary or desirable to transfer and confirm to, and for more fully and certainly vesting in, such successor Trustee all such rights, powers and trusts.

If a successor Trustee is appointed with respect to one or more (but not all) Trusts, the Company, the predecessor Trustee and each successor Trustee with respect to any Trust shall execute and deliver a supplemental agreement hereto which shall contain such provisions as shall be deemed necessary or desirable to confirm that all of the rights, powers, trusts and duties of the predecessor Trustee with respect to the Trusts as to which the predecessor Trustee is not retiring shall continue to be vested in the predecessor Trustee, and shall add to or change any of the provisions of this Basic Agreement and the applicable Trust Supplements as shall be necessary to provide for or facilitate the administration of the Trusts hereunder by more than one Trustee, it being understood that nothing herein or in such supplemental agreement shall constitute such Trustees as co-Trustees of the same Trust and that each such Trustee shall be Trustee of separate Trusts.

No institution shall accept its appointment as a successor Trustee hereunder unless at the time of such acceptance such institution shall be qualified and eligible under this Article VII.

Section 7.11 Merger, Conversion, Consolidation or Succession to Business . Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation succeeding to all or substantially all of the corporate trust business of the Trustee, shall be the successor of the Trustee hereunder, provided that such corporation shall be otherwise qualified and eligible under this Article VII, without the execution or filing of any paper or any further act on the part of any of the parties hereto. In case any Certificates shall have been executed or authenticated, but not delivered, by the Trustee then in office, any successor by merger, conversion or consolidation to such authenticating Trustee may adopt such execution or authentication and deliver the Certificates so executed or authenticated with the same effect as if such successor Trustee had itself executed or authenticated such Certificates.

Section 7.12 Maintenance of Agencies . (a) With respect to each series of Certificates, there shall at all times be maintained an office or agency in the location set forth in Section 12.04 or at such other location as may be specified in the applicant Trust Supplement where Certificates of such series may be presented or surrendered for registration of transfer or for exchange, and for payment thereof, and where notices and demands to or upon the Trustee in respect of such Certificates or this Agreement may be served; provided that, if it shall be necessary that the Trustee maintain an office or agency in another location with respect to the Certificates of any series (e.g., the Certificates of such series shall be represented by Definitive Certificates and shall be listed on a national securities exchange), the Trustee will make all

41

reasonable efforts to establish such an office or agency. Written notice of the location of each such other office or agency and of any change of location thereof shall be given by the Trustee to the Company, any Owner Trustees, the Loan Trustees (in the case of any Owner Trustee or Loan Trustee, at its address specified in the Note Documents or such other address as may be notified to the Trustee) and the Certificateholders of such series. In the event that no such office or agency shall be maintained or no such notice of location or of change of location shall be given, presentations and demands may be made and notices may be served at the Corporate Trust Office of the Trustee.

(b) There shall at all times be a Registrar and a Paying Agent hereunder with respect to the Certificates of each series. Each such Authorized Agent shall be a bank, trust company or other financial institution organized and doing business under the laws of the United States or any state thereof, with a combined capital and surplus of at least $100,000,000 (or combined capital and surplus in excess of $5,000,000, the obligations of which are fully and unconditionally guaranteed by a corporation organized and doing business under the laws of the United States or any state or territory thereof or the District of Columbia, with a combined capital and surplus of at least $100,000,000), and shall be authorized under such laws to exercise corporate trust powers, subject to supervision by federal or state authorities. The Trustee shall initially be the Paying Agent and, as provided in Section 3.04, Registrar hereunder with respect to the Certificates of each series. Each Registrar other than the Trustee shall furnish to the Trustee, at stated intervals of not more than six months, and at such other times as the Trustee may request in writing, a copy of the Register maintained by such Registrar.

(c) Any corporation, bank or trust company into which any Authorized Agent may be merged or converted or with which it may be consolidated, or any corporation, bank or trust company resulting from any merger, consolidation or conversion to which any Authorized Agent shall be a party, or any corporation, bank or trust company succeeding to the corporate trust business of any Authorized Agent, shall be the successor of such Authorized Agent, if such successor is otherwise eligible under this Section 7.12, without the execution or filing of any paper or any further act on the part of the parties hereto or such Authorized Agent or such successor.

(d) Any Authorized Agent may at any time resign by giving written notice of resignation to the Trustee, the Company, any related Owner Trustees and the related Loan Trustees. The Company may, and at the request of the Trustee shall, at any time terminate the agency of any Authorized Agent by giving written notice of termination to such Authorized Agent and to the Trustee. Upon the resignation or termination of an Authorized Agent or in case at any time any such Authorized Agent shall cease to be eligible under this Section 7.12 (when, in either case, no other Authorized Agent performing the functions of such Authorized Agent shall have been appointed), the Company shall promptly appoint one or more qualified successor Authorized Agents, reasonably satisfactory to the Trustee, to perform the functions of the Authorized Agent which has resigned or whose agency has been terminated or who shall have ceased to be eligible under this Section 7.12. The Company shall give written notice of any such appointment made by it to the Trustee, any related Owner Trustees and the related Loan Trustees; and in each case the Trustee shall mail notice of such appointment to all Certificateholders of the related series as their names and addresses appear on the Register for such series.

42

(e) The Company agrees to pay, or cause to be paid, from time to time to each Authorized Agent such compensation for its services as the Company and the Trustee may agree in writing from time to time and to reimburse it for its reasonable expenses to the extent set forth in Section 7.07(2).

Section 7.13 Money for Certificate Payments to Be Held in Trust . All moneys deposited with any Paying Agent for the purpose of any payment on Certificates shall be deposited and held in trust for the benefit of the Certificateholders entitled to such payment, subject to the provisions of this Section 7.13. Moneys so deposited and held in trust shall constitute a separate trust fund for the benefit of the Certificateholders with respect to which such money was deposited.

The Trustee may at any time, for the purpose of obtaining the satisfaction and discharge of this Agreement or for any other purpose, direct any Paying Agent to pay to the Trustee all sums held in trust by such Paying Agent, such sums to be held by the Trustee upon the same trusts as those upon which such sums were held by such Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such Paying Agent shall be released from all further liability with respect to such money.

Section 7.14 Registration of Equipment Notes in Trustee’s Name . Subject to the provisions of any Intercreditor Agreement and Section 12.03 hereof, the Trustee agrees that all Equipment Notes to be purchased by any Trust, Specified Investments, if any, to be held by the Trustee on behalf of a Trust and Permitted Investments, if any, to be held by the Trustee on behalf of a Trust shall be issued in the name of the Trustee as trustee for the applicable Trust or its nominee and held by the Trustee in trust for the benefit of the Certificateholders of such series, or, if not so held, the Trustee or its nominee shall be reflected as the owner of such Equipment Notes, Specified Investments or Permitted Investments, as the case may be, in the register of the issuer of such Equipment Notes, Specified Investments or Permitted Investments, as the case may be. In no event shall the Trustee invest in, or hold, Equipment Notes, Specified Investments or Permitted Investments in a manner that would cause the Trustee not to have the ownership interest in (or a securities entitlement with respect to) such Equipment Notes, Specified Investments or Permitted Investments under the applicable provisions of the Uniform Commercial Code in effect where the Trustee holds such Equipment Notes, Specified Investments or Permitted Investments or other applicable law then in effect.

Section 7.15 Representations and Warranties of Trustee . The Trustee hereby represents and warrants that:

(a) the Trustee is a trust company duly organized and validly existing in good standing under the laws of the State of Delaware;

(b) the Trustee has full power, authority and legal right to execute, deliver and perform this Agreement, any Intercreditor Agreement, any Liquidity Facility, the Certificates and the Note Purchase Agreements and has taken all necessary action to authorize the execution, delivery and performance by it of this Agreement, any Intercreditor Agreement, any Liquidity Facility, the Certificates and the Note Purchase Agreements;

43

(c) the execution, delivery and performance by the Trustee of this Agreement, any Intercreditor Agreement, any Liquidity Facility, the Certificates and the Note Purchase Agreements (i) will not violate any provision of any United States federal law governing its trust powers or the law of the state of the United States where such Trustee is located and which governs the trust powers of the Trustee or any order, writ, judgment, or decree of any court, arbitrator or governmental authority applicable to the Trustee or any of its assets, (ii) will not violate any provision of the charter or by-laws of the Trustee, and (iii) will not violate any provision of, or constitute, with or without notice or lapse of time or both, a default under, or result in the creation or imposition of any lien on any properties included in the Trust Property pursuant to the provisions of any mortgage, indenture, contract, agreement or other undertaking to which it is a party;

(d) the execution, delivery and performance by the Trustee of this Agreement, any Intercreditor Agreement, any Liquidity Facility, the Certificates and the Note Purchase Agreements will not require the authorization, consent, or approval of, the giving of notice to, the filing or registration with, or the taking of any other action in respect of, any governmental authority or agency of the United States or the state of the United States where such Trustee is located and regulating the corporate trust activities of the Trustee, other than the filing of a Statement of Eligibility on Form T-1 in connection with the registration of any Certificates;

(e) this Agreement, any Intercreditor Agreement, any Liquidity Facility, the Certificates and the Note Purchase Agreements have been or will be duly executed and delivered by the Trustee and constitute or upon such execution and delivery will constitute the legal, valid and binding agreements of the Trustee, enforceable against it in accordance with their respective terms; provided, however, that enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally, and (ii) general principles of equity; and

(f) the statements made by it in a Statement of Eligibility on Form T-1 supplied or to be supplied to the Company in connection with the registration of any Certificates are and will be true and accurate subject to the qualifications set forth therein; and that such statement complies and will comply in all material respects with the requirements of the Trust Indenture Act and the Securities Act.

The representation and warranties set forth above shall be deemed to be made by the Trustee on each Issuance Date, except as otherwise provided in the applicable Trust Supplement.

Section 7.16 Withholding Taxes; Information Reporting . As to the Certificates of any series, the Trustee, as trustee of the related grantor trust created by this Agreement, shall exclude and withhold from each distribution of principal, premium, if any, and interest and other amounts due under this Agreement or under the Certificates of such series any and all withholding taxes applicable thereto as required by law. The Trustee agrees to act as such withholding agent and, in connection therewith, whenever any present or future taxes or similar charges are required to be withheld with respect to any amounts payable in respect of the Certificates of such series, to withhold such amounts and timely pay the same to the appropriate authority in the name of and on behalf of the Certificateholders of such series, that it will file any necessary withholding tax returns or statements when due, and that, as promptly as possible after the payment thereof, it

44

will deliver to each such Certificateholder of such series appropriate documentation showing the payment thereof, together with such additional documentary evidence as such Certificateholders may reasonably request from time to time. The Trustee agrees to file any other information reports as it may be required to file under United States law.

Section 7.17 Trustee’s Liens . The Trustee in its individual capacity agrees that it will, in respect of each Trust created by this Agreement, at its own cost and expense (and without right of indemnity hereunder, including Section 7.07), promptly take any action as may be necessary to duly discharge and satisfy in full any mortgage, pledge, lien, charge, encumbrance, security interest or claim (“Trustee’s Liens”) on or with respect to the Trust Property of such Trust which is attributable to the Trustee either (i) in its individual capacity and which is unrelated to the transactions contemplated by this Agreement or the related Note Documents or (ii) as Trustee hereunder or in its individual capacity and which arises out of acts or omissions which are not contemplated by this Agreement.

Section 7.18 Preferential Collection of Claims . The Trustee shall comply with Section 311(a) of the Trust Indenture Act, excluding any creditor relationship listed in Section 311(b) of the Trust Indenture Act. If the Trustee shall resign or be removed as Trustee, it shall be subject to Section 311(a) of the Trust Indenture Act to the extent provided therein.

Section 7.19 Capacity in Which Acting . The Trustee acts hereunder and under any Trust not in its individual capacity but solely as trustee except as expressly provided herein or in the related Trust Supplement.

ARTICLE VIII.

CERTIFICATEHOLDERS’ LISTS AND REPORTS BY TRUSTEE

Section 8.01 The Company to Furnish Trustee with Names and Addresses of Certificateholders . With respect to the Certificates of each series, the Company will furnish (or cause to be furnished) to the Trustee within 15 days after each Record Date with respect to a Scheduled Payment (and, in any case, at intervals of not more than six months), and at such other times as the Trustee may request in writing within 30 days after receipt by the Company of any such request, a list, in such form as the Trustee may reasonably require, of all information in the possession or control of the Company as to the names and addresses of the Certificateholders of such series, in each case as of a date not more than 15 days prior to the time such list is furnished; provided, however, that so long as the Trustee is the sole Registrar for such series, no such list need be furnished; and provided further, that no such list need be furnished for so long as a copy of the Register is being furnished to the Trustee pursuant to Section 7.12.

Section 8.02 Preservation of Information; Communications to Certificateholders . The Trustee shall preserve, in as current a form as is reasonably practicable, the names and addresses of Certificateholders of each series contained in the most recent list furnished to the Trustee as provided in Section 7.12 or Section 8.01, as the case may be, and the names and addresses of Certificateholders of each series received by the Trustee in its capacity as Registrar, if so acting. The Trustee may destroy any list furnished to it as provided in Section 7.12 or Section 8.01, as the case may be, upon receipt of a new list so furnished.

45

Section 8.03 Reports by Trustee . Within 60 days after May 15 of each year commencing with the first full year following the issuance of any series of Certificates, the Trustee shall transmit to the Certificateholders of such series, as provided in Section 313(c) of the Trust Indenture Act, a brief report dated as of such May 15, if required by and in compliance with Section 313(a) of the Trust Indenture Act. The Trustee shall also transmit to Certificateholders such reports, if any, as may be required pursuant to Section 313(b) of the Trust Indenture Act at the times and in the manner provided pursuant thereto and to Section 313(c) thereof.

Section 8.04 Reports by the Company . The Company shall:

(a) file with the Trustee, within 30 days after the Company is required to file the same with the SEC, copies of the annual reports and of the information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may from time to time by rules and regulations prescribe) which the Company is required to file with the SEC pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934, as amended; or, if the Company is not required to file information, documents or reports pursuant to either of such sections, then to file with the Trustee and the SEC, in accordance with rules and regulations prescribed by the SEC, such of the supplementary and periodic information, documents and reports which may be required pursuant to section 13 of the Securities Exchange Act of 1934, as amended, in respect of a security listed and registered on a national securities exchange as may be prescribed in such rules and regulations; provided, that the Company may fulfill the requirements of this Section 8.04(a) by providing the material described herein in an electronic format by electronic mail or accessible over the internet;

(b) file with the Trustee and the SEC, in accordance with the rules and regulations prescribed by the SEC, such additional information, documents and reports with respect to compliance by the Company with the conditions and covenants of the Company provided for in this Agreement, as may be required by such rules and regulations;

(c) transmit to all Certificateholders, in the manner and to the extent provided in Section 313(c) of the Trust Indenture Act, such summaries of any information, documents and reports required to be filed by the Company pursuant to subsections (a) and (b) of this Section 8.04 as may be required by rules and regulations prescribed by the SEC; and

(d) furnish to the Trustee, not less often than annually, a brief certificate from the principal executive officer, principal financial officer or principal accounting officer as to his or her knowledge of the Company’s compliance with all conditions and covenants of the Company under this Agreement (it being understood that for purposes of this paragraph (d), such compliance shall be determined without regard to any grace period or requirement of notice provided under this Agreement).

46

ARTICLE IX.

SUPPLEMENTAL AGREEMENTS

Section 9.01 Supplemental Agreements Without Consent of Certificateholders . Without the consent of any Certificateholders, the Company may (but will not be required to), and the Trustee (subject to Section 9.03) shall, at the Company’s request, at any time and from time to time, enter into one or more agreements supplemental hereto or, if applicable, to an Intercreditor Agreement, a Note Purchase Agreement, a Liquidity Facility or a Parent Guarantee, for any of the following purposes:

(1) to provide for the formation of a Trust, the issuance of a series of Certificates and other matters contemplated by Section 2.01(b) or to add, or to change or eliminate, any provision affecting a series of Certificates not yet issued, including to make appropriate provisions for a Parent Guarantee; or

(2) to evidence the succession of another Person to the Company and the assumption by any such successor of the covenants of the Company contained in this Agreement or of the Company’s obligations under any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility or, if applicable, to evidence the succession of another Person to the Parent and the assumption by any such successor of the covenants of the Parent contained in this Agreement or of the Parent’s obligations under any Parent Guarantee; or

(3) to add to the covenants of the Company or the Parent for the benefit of the Certificateholders of any series, or to surrender any right or power conferred upon the Company or the Parent in this Agreement, any Note Purchase Agreement, any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee; or

(4) to cure any ambiguity or to correct any mistake or inconsistency contained in the Certificates of any series, in this Basic Agreement or in any related Trust Supplement, any Intercreditor Agreement, any Note Purchase Agreement, any Liquidity Facility or any Parent Guarantee; or

(5) to make or modify any other provision in regard to matters or questions arising under the Certificates of any series, this Basic Agreement or any related Trust Supplement, any Intercreditor Agreement, any Note Purchase Agreement, any Liquidity Facility or any Parent Guarantee as the Company may deem necessary or desirable and that will not materially adversely affect the interests of the related Certificateholders; or

(6) to comply with any requirement of the SEC, any applicable law, rules or regulations of any exchange or quotation system on which the Certificates of any series are listed or of any regulatory body; or

(7) to modify, eliminate or add to the provisions of this Agreement, any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee to such extent as shall be necessary to continue or obtain the qualification of this Agreement (including any supplemental agreement), any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee under the Trust Indenture Act or under any similar Federal statute

47

hereafter enacted, and to add to this Agreement, any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee such other provisions as may be expressly permitted by the Trust Indenture Act, excluding, however, the provisions referred to in Section 316(a)(2) of the Trust Indenture Act as in effect at the date as of which this Basic Agreement was executed or any corresponding provision in any similar Federal statute hereafter enacted; or

(8) to evidence and provide for the acceptance of appointment by a successor Trustee under this Agreement, any Intercreditor Agreement, any Note Purchase Agreement, any Indenture, any Liquidity Facility or any Parent Guarantee with respect to one or more Trusts and to add to or change any of the provisions of this Agreement, any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee as shall be necessary to provide for or facilitate the administration of the Trust hereunder and thereunder by more than one Trustee, pursuant to the requirements of Section 7.10, or to provide multiple Liquidity Facilities with respect to one or more Trusts; or

(9) to provide the information required under Section 7.12 and Section 12.04 as to the Trustee; or

(10) to add to or change any of the provisions of the Certificates of any series, this Basic Agreement or any Trust Supplement to such extent as shall be necessary to facilitate the issuance of Certificates of such series in bearer form or to facilitate or provide for the issuance of Certificates of such series in global form in addition to or in place of Certificates in certificated form; or

(11) to provide for the delivery of agreements supplemental hereto or the Certificates of any series in or by any means of any computerized, electronic or other medium, including without limitation by computer diskette; or

(12) to correct or supplement the description of any property constituting property of such Trust; or

(13) to modify, eliminate or add to the provisions of this Basic Agreement, any Trust Supplement or any applicable Note Purchase Agreement in order to reflect the substitution of a Substitute Aircraft for any aircraft; or

(14) to comply with any requirement of the SEC in connection with the qualification of this Agreement, any Parent Guarantee or any other agreement or instrument related to the Certificates of any series under the Trust Indenture Act; or

(15) to make any other amendments or modifications hereto, provided that such amendments or modifications shall only apply to Certificates of one or more series to be thereafter issued;

provided, however, that, except to the extent otherwise provided in the applicable supplemental agreement, unless there shall have been obtained from each Rating Agency written confirmation that such supplemental agreement would not result in a reduction of the rating for any class of Certificates below the then current rating for such class of Certificates or a withdrawal or

48

suspension of the rating of any class of Certificates, the Company shall provide the Trustee with an opinion of counsel (i) if an Event of Default shall have occurred and be continuing, to the effect that such supplemental agreement will not cause the Trust to become an association taxable as a corporation for United States federal income tax purposes or (ii) in other circumstances, to the effect that such supplemental agreement will not cause the Trust to be treated as other than a grantor trust for United States federal income tax purposes.

Section 9.02 Supplemental Agreements with Consent of Certificateholders . With respect to each separate Trust and the series of Certificates relating thereto, with the consent of the Certificateholders holding Certificates of such series (including consents obtained in connection with a consent solicitation, tender offer or exchange offer for the Certificates) evidencing Fractional Undivided Interests aggregating not less than a majority in interest in such Trust, by Direction of said Certificateholders delivered to the Company and the Trustee, the Company and, if applicable, the Parent may (with the consent of the Owner Trustees, if any, relating to such Certificates, which consent shall not be unreasonably withheld), but shall not be obligated to, and the Trustee (subject to Section 9.03) shall, enter into an agreement or agreements supplemental hereto for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Agreement, any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee to the extent applicable to such Certificateholders or of modifying in any manner the rights and obligations of such Certificateholders under this Agreement, any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee; provided, however, that no such agreement shall, without the consent of the Certificateholder of each Outstanding Certificate adversely affected thereby:

(1) reduce in any manner the amount of, or delay the timing of, any receipt by the Trustee of payments on the Equipment Notes held in such Trust or distributions that are required to be made herein on any Certificate of such series, or change any date of payment on any Certificate of such series, or change the place of payment where, or the coin or currency in which, any Certificate of such series is payable (other than as provided for in such Certificate), or impair the right to institute suit for the enforcement of any such payment or distribution on or after the Regular Distribution Date or Special Distribution Date applicable thereto; or

(2) except as permitted by this Agreement or the applicable Intercreditor Agreement or Liquidity Facility, permit the disposition of any Equipment Note included in the Trust Property of such Trust or otherwise deprive such Certificateholder of the benefit of the ownership of the Equipment Notes in such Trust; or

(3) alter the priority of distributions specified in the relevant Intercreditor Agreement, if any, in a manner materially adverse to the interests of the Certificateholders of any series; or

(4) modify any of the provisions of this Section 9.02 with respect to such series of Certificates, except to increase the specified percentage of the aggregate Fractional Undivided Interests of such Trust that is required for any supplemental agreement as set forth therein, or to provide that certain other provisions of this Agreement cannot be modified or waived without the consent of the Certificateholder of each Certificate of such series affected thereby; or

49

(5) cause any Trust to become an association taxable as a corporation for United States federal income tax purposes.

It shall not be necessary for any Direction of such Certificateholders under this Section 9.02 to approve the particular form of any proposed supplemental agreement, but it shall be sufficient if such Direction shall approve the substance thereof.

Section 9.03 Documents Affecting Immunity or Indemnity . If in the opinion of the Trustee any document required to be executed by it pursuant to the terms of Section 9.01 or 9.02 affects any interest, right, duty, immunity or indemnity in favor of the Trustee under this Basic Agreement or any Trust Supplement, the Trustee may in its discretion decline to execute such document.

Section 9.04 Execution of Supplemental Agreements . In executing, or accepting the additional trusts created by, any supplemental agreement permitted by this Article IX or the modifications thereby of the trusts created by this Agreement, the Trustee shall be entitled to receive, and shall be fully protected in relying upon, an Opinion of Counsel stating that the execution of such supplemental agreement is authorized or permitted by this Agreement.

Section 9.05 Effect of Supplemental Agreements . Upon the execution of any agreement supplemental to this Agreement under this Article IX, this Agreement shall be modified in accordance therewith, and such supplemental agreement shall form a part of this Agreement for all purposes, and every Certificateholder of each series theretofore or thereafter authenticated and delivered hereunder shall be bound thereby to the extent applicable to such series.

Section 9.06 Conformity with Trust Indenture Act . Every supplemental agreement executed pursuant to this Article IX shall conform to the requirements of the Trust Indenture Act as then in effect.

Section 9.07 Reference in Certificates to Supplemental Agreements . Certificates of each series authenticated and delivered after the execution of any supplemental agreement applicable to such series pursuant to this Article IX may bear a notation in form approved by the Trustee as to any matter provided for in such supplemental agreement; and, in such case, suitable notation may be made upon Outstanding Certificates of such series after proper presentation and demand.

ARTICLE X.

AMENDMENTS TO INDENTURES AND OTHER NOTE DOCUMENTS

Section 10.01 Amendments and Supplements to Indentures and Other Note Documents . In the event that the Trustee, as holder (or beneficial owner through the Subordination Agent) of any Equipment Notes (or as a prospective purchaser of any Postponed Notes) in trust for the benefit of the Certificateholders of any series or as Controlling Party under an Intercreditor Agreement, receives (directly or indirectly through the Subordination Agent) a request for a consent to any amendment, modification, waiver or supplement under any Indenture or other

50

Note Document, subject to Section 9.01 hereof, the Trustee shall forthwith send a notice of such proposed amendment, modification, waiver or supplement to each Certificateholder of such series registered on the Register as of the date of such notice. The Trustee shall request from the Certificateholders of such series a Direction as to (a) whether or not to take or refrain from taking (or direct the Subordination Agent to take or refrain from taking) any action which a holder of (or, with respect to Postponed Notes, a prospective purchaser of) such Equipment Note has the option to direct, (b) whether or not to give or execute (or direct the Subordination Agent to give or execute) any waivers, consents, amendments, modifications or supplements as a holder of (or, with respect to Postponed Notes, a prospective purchaser of) such Equipment Note or a Controlling Party and (c) how to vote (or direct the Subordination Agent to vote) any Equipment Note (or, with respect to a Postponed Note, its commitment to acquire such Postponed Note) if a vote has been called for with respect thereto. Provided such a request for Certificateholder Direction shall have been made, in directing any action or casting any vote or giving any consent as the holder of any Equipment Note (or in directing the Subordination Agent in any of the foregoing), (i) other than as Controlling Party, the Trustee shall vote for or give consent to any such action with respect to such Equipment Note (or Postponed Note) in the same proportion as that of (A) the aggregate face amount of all Certificates actually voted in favor of or for giving consent to such action by such Direction of Certificateholders to (B) the aggregate face amount of all Outstanding Certificates and (ii) as Controlling Party, the Trustee shall vote as directed in such Certificateholder Direction by the Certificateholders of such series evidencing a Fractional Undivided Interest aggregating not less than a majority in interest in the Trust. For purposes of the immediately preceding sentence, a Certificate shall have been “actually voted” if the Holder of such Certificate has delivered to the Trustee an instrument evidencing such Holder’s consent to such Direction prior to one Business Day before the Trustee directs such action or casts such vote or gives such consent. Notwithstanding the foregoing, but subject to Section 6.04 and any Intercreditor Agreement, the Trustee may, with respect to the Certificates of any series, in its own discretion and at its own direction, consent and notify the relevant Loan Trustee of such consent (or direct the Subordination Agent to consent and notify the Loan Trustee of such consent) to any amendment, modification, waiver or supplement under any related Indenture or any other related Note Document if an Event of Default hereunder shall have occurred and be continuing or if such amendment, modification, waiver or supplement will not materially adversely affect the interests of the Certificateholders of such series.

ARTICLE XI.

TERMINATION OF TRUSTS

Section 11.01 Termination of the Trusts . In respect of each Trust created by the Basic Agreement as supplemented by a related Trust Supplement, the respective obligations and responsibilities of the Company and the Trustee and, if applicable, the Parent with respect to such Trust shall terminate upon the distribution to all Holders of Certificates of the series of such Trust and the Trustee of all amounts required to be distributed to them pursuant to this Agreement and the disposition of all property held as part of the Trust Property of such Trust; provided, however, that in no event shall such Trust continue beyond the final expiration date determined as provided in such Trust Supplement.

51

Notice of any termination of a Trust, specifying the applicable Regular Distribution Date (or applicable Special Distribution Date, as the case may be) upon which the Certificateholders of any series may surrender their Certificates to the Trustee for payment of the final distribution and cancellation, shall be mailed promptly by the Trustee to Certificateholders of such series not earlier than 60 days and not later than 15 days preceding such final distribution specifying (i) the Regular Distribution Date (or Special Distribution Date, as the case may be) upon which the proposed final payment of the Certificates of such series will be made upon presentation and surrender of Certificates of such series at the office or agency of the Trustee therein specified, (ii) the amount of any such proposed final payment, and (iii) that the Record Date otherwise applicable to such Regular Distribution Date (or Special Distribution Date, as the case may be) is not applicable, payments being made only upon presentation and surrender of the Certificates of such series at the office or agency of the Trustee therein specified. The Trustee shall give such notice to the Registrar at the time such notice is given to Certificateholders of such series. Upon presentation and surrender of the Certificates of such series in accordance with such notice, the Trustee shall cause to be distributed to Certificateholders of such series amounts distributable on such Regular Distribution Date (or Special Distribution Date, as the case may be) pursuant to Section 4.02.

In the event that all of the Certificateholders of such series shall not surrender their Certificates for cancellation within six months after the date specified in the above-mentioned written notice, the Trustee shall give a second written notice to the remaining Certificateholders of such series to surrender their Certificates for cancellation and receive the final distribution with respect thereto. No additional interest shall accrue on the Certificates of such series after any Regular Distribution Date (or Special Distribution Date, as the case may be) of such series, as specified in the first written notice. In the event that any money held by the Trustee for the payment of distributions on the Certificates of such series shall remain unclaimed for two years (or such lesser time as the Trustee shall be satisfied, after 60 days’ notice from the Company, is one month prior to the escheat period provided under applicable law) after the final distribution date with respect thereto, the Trustee shall pay to each Loan Trustee the appropriate amount of money relating to such Loan Trustee for distribution as provided in the applicable Indenture or other Note Documents and shall give written notice thereof to any related Owner Trustees and the Company.

ARTICLE XII.

MISCELLANEOUS PROVISIONS

Section 12.01 Limitation on Rights of Certificateholders . (a) The insolvency, death or incapacity of any Certificateholder of any series shall not operate to terminate this Agreement or the related Trust, nor entitle such Certificateholder’s legal representatives or heirs to claim an accounting or to take any action or commence any proceeding in any court for a partition or winding up of the Trust, nor otherwise affect the rights, obligations and liabilities of the parties hereto or any of them. No Certificateholder of any series shall be entitled to revoke the related Trust.

52

(b) No transfer, by operation of law or otherwise, of any Certificate or other right, title and interest of any Certificateholder in and to the applicable Trust Property or under the related Trust shall operate to terminate the Trust or entitle such Certificateholder or any successor or transferee of such Certificateholder to an accounting or to the transfer to it of legal title to any part of such Trust Property.

Section 12.02 Certificates Nonassessable and Fully Paid . Certificateholders of each series shall not be personally liable for obligations of the related Trust, the Fractional Undivided Interests represented by the Certificates of such series shall be nonassessable for any losses or expenses of such Trust or for any reason whatsoever, and Certificates of such series upon authentication thereof by the Trustee pursuant to Section 3.02 are and shall be deemed fully paid. No Certificateholder of such series shall have any right (except as expressly provided herein) to vote or in any manner otherwise control the operation and management of the related Trust Property, the related Trust, or the obligations of the parties hereto, nor shall anything set forth herein, or contained in the terms of the Certificates of such series, be construed so as to constitute the Certificateholders of such series from time to time as partners or members of an association.

Section 12.03 Registration of Equipment Notes in Name of Subordination Agent . If a Trust is party to an Intercreditor Agreement, the Trustee agrees that all Equipment Notes to be purchased by such Trust may be issued in the name of the Subordination Agent under such Intercreditor Agreement or its nominee and held by such Subordination Agent in trust for the benefit of the Certificateholders, or, if not so held, such Subordination Agent or its nominee shall be reflected as the owner of such Equipment Notes in the register of the issuer of such Equipment Notes.

Section 12.04 Notices . (a) Unless otherwise expressly specified or permitted by the terms hereof or in the applicable Trust Supplement with respect to any Trust created thereby, all notices required or permitted under the terms and provisions of this Basic Agreement or such Trust Supplement shall be in English and in writing, and any such notice may be given by U.S. mail, courier service or facsimile or any other customary means of communication, and any such notice shall be effective when delivered (or, if mailed, three Business Days after deposit, postage prepaid, in the first class U.S. mail and, if delivered by facsimile, upon completion of transmission and confirmation by the sender (by a telephone call to a representative of the recipient or by machine confirmation) that the transmission was received), if to the Company, to:

American Airlines, Inc.

4333 Amon Carter Blvd.

Fort Worth, Texas 76155

Attention: Treasurer

Telephone: (817) 963-1234

Facsimile: (817) 967-4318

53

if to the Trustee, to:

Wilmington Trust Company

1100 North Market Street

Wilmington, Delaware 19890

Attention: Corporate Client Services

Telephone: 302-636-6472

Facsimile: 302-636-4149

Email: avogelsong@wilmingtontrust.com

(b) The Company or the Trustee, by notice to the other, may designate additional or different addresses for subsequent notices or communications.

(c) Any notice or communication to Certificateholders of any series shall be mailed by first-class mail to the addresses for Certificateholders of such series shown on the Register kept by the Registrar and to addresses filed with the Trustee for Certificate Owners of such series. Failure so to mail a notice or communication or any defect in such notice or communication shall not affect its sufficiency with respect to other Certificateholders or Certificate Owners of such series.

(d) If a notice or communication is mailed in the manner provided above, it is conclusively presumed to have been duly given, whether or not the addressee receives it.

(e) If the Company mails a notice or communication to the Certificateholders of such series, it shall mail a copy to the Trustee and to each Paying Agent for such series at the same time.

(f) The Trustee shall promptly furnish the Company with a copy of any report, demand, notice or written communication received by the Trustee hereunder from, or sent or furnished by the Trustee hereunder to any Certificateholder, Certificate Owner, Owner Trustee, Loan Trustee, Liquidity Provider, Subordination Agent or other Person.

Section 12.05 Governing Law . THIS BASIC AGREEMENT HAS BEEN DELIVERED IN THE STATE OF NEW YORK AND THIS BASIC AGREEMENT, TOGETHER WITH ALL TRUST SUPPLEMENTS AND CERTIFICATES, SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER AND THEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

Section 12.06 Severability of Provisions . Any provision of this Agreement which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.

Section 12.07 Trust Indenture Act Controls . This Agreement is subject to the provisions of the Trust Indenture Act and if any provision of this Agreement limits, qualifies or conflicts with another provision which is required to be included in this Agreement by the Trust Indenture

54

Act, the required provision shall control. If any provision of this Agreement modifies or excludes any provision of the Trust Indenture Act that may be so modified or excluded, the latter provision shall be deemed to apply to this Agreement as so modified, or to be excluded, as the case may be, whether or not such provision of this Agreement refers expressly to such provision of the Trust Indenture Act.

Section 12.08 Effect of Headings and Table of Contents . The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof.

Section 12.09 Successors and Assigns . All covenants, agreements, representations and warranties in this Agreement by the Trustee and the Company shall bind and, to the extent permitted hereby, shall inure to the benefit of and be enforceable by their respective successors and assigns, whether so expressed or not. Any request, notice, direction, consent, waiver or other instrument or action by any Certificateholder shall bind the successors and assigns of such Certificateholder.

Section 12.10 Benefits of Agreement . Nothing in this Agreement or in the Certificates of any series, express or implied, shall give to any Person, other than the parties hereto and their successors hereunder, and the Certificateholders of each series, any benefit or any legal or equitable right, remedy or claim under this Agreement, except as provided expressly herein.

Section 12.11 Legal Holidays . In any case where any Regular Distribution Date or Special Distribution Date relating to any Certificate of any series shall not be a Business Day with respect to such series, then (notwithstanding any other provision of this Agreement) payment need not be made on such date, but may be made on the next succeeding Business Day with the same force and effect as if made on such Regular Distribution Date or Special Distribution Date, and no interest shall accrue during the intervening period.

Section 12.12 Counterparts . For the purpose of facilitating the execution of this Agreement and for other purposes, this Agreement may be executed simultaneously in any number of counterparts, each of which counterparts shall be deemed to be an original, and all of which counterparts shall constitute but one and the same instrument.

Section 12.13 Communication by Certificateholders with Other Certificateholders . Certificateholders of any series may communicate with other Certificateholders of such series with respect to their rights under this Basic Agreement, the related Trust Supplement or the Certificates of such series pursuant to Section 312(b) of the Trust Indenture Act. The Company, the Trustee and any and all other persons benefitted by this Agreement shall have the protection afforded by Section 312(c) of the Trust Indenture Act.

Section 12.14 Normal Commercial Relations . Anything contained in this Agreement to the contrary notwithstanding, the Trustee and any Certificateholder, or any bank or other Affiliate of any such party, may conduct any banking or other financial transactions, and have banking or other commercial relationships, with the Company, the Parent and any of their Affiliates fully to the same extent as if this Agreement were not in effect, including without limitation the making of loans or other extensions of credit to the Company, the Parent and any of their Affiliates for any purpose whatsoever, whether related to any of the transactions contemplated hereby or otherwise.

55

Section 12.15 No Recourse Against Others . No past, present or future director, officer, employee, agent, member, manager, trustee or stockholder, as such, of the Company, the Parent or any successor Person or any Affiliate of any thereof shall have any liability for any obligations of the Company, the Parent or any successor Person or any Affiliate of any thereof, either directly or through the Company, the Parent or any successor Person or any Affiliate of any thereof, under the Certificates, this Agreement or any Parent Guarantee or for any claim based on, in respect of or by reason of such obligations or their creation, whether by virtue of any rule of law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable proceeding or otherwise. By accepting a Certificate, each Certificateholder agrees to the provisions of this Section 12.15 and waives and releases all such liability. Such waiver and release shall be part of the consideration for the issue of the Certificates.

[Remainder of page intentionally left blank]

56

IN WITNESS WHEREOF, the parties have caused this Pass Through Trust Agreement to be duly executed by their respective officers thereunto duly authorized as of the day and year first written above.

[ Signature Page to Pass Through Trust Agreement ]

Exhibit 4.2

EXECUTION VERSION

TRUST SUPPLEMENT NO. 2014-1A

Dated as of September 16, 2014

between

AMERICAN AIRLINES, INC.,

and

WILMINGTON TRUST COMPANY,

as Trustee,

to

PASS THROUGH TRUST AGREEMENT

Dated as of September 16, 2014

American Airlines Pass Through Trust 2014-1A

American Airlines Pass Through Certificates, Series 2014-1A

TABLE OF CONTENTS

TRUST SUPPLEMENT NO. 2014-1A

This TRUST SUPPLEMENT NO. 2014-1A, dated as of September 16, 2014 (as amended from time to time, the “ Trust Supplement ”), between AMERICAN AIRLINES, INC., a Delaware corporation (together with any successor in interest pursuant to Section 5.02 of the Basic Agreement, the “ Company ” or “ American ”) and WILMINGTON TRUST COMPANY, a Delaware trust company, not in its individual capacity but solely as trustee (together with any successor in interest and any successor or other trustee appointed as provided in the Basic Agreement, the “ Trustee ”) under the Pass Through Trust Agreement, dated as of September 16, 2014, between the Company and Wilmington Trust Company, a Delaware trust company (the “ Basic Agreement ”).

W I T N E S S E T H:

WHEREAS, the Basic Agreement, which is unlimited as to the aggregate face amount of Certificates that may be issued and authenticated thereunder, has heretofore been executed and delivered;

WHEREAS, the Company owns (i) the beneficial interest in owner trusts that own the two Boeing aircraft described in Schedule I-B to the NPA (each an “ Owner Trust Aircraft ” and collectively the “ Owner Trust Aircraft ”) and (ii) the three Boeing and twelve Airbus aircraft described in Schedule I-A to the NPA (each an “ Owned Aircraft ” and collectively the “ Owned Aircraft ” and, together with each Owner Trust Aircraft, each an “ Aircraft ” and, collectively, the “ Aircraft ”);

WHEREAS, pursuant to each Indenture, American will issue on a recourse basis two series of Equipment Notes secured by the related Aircraft;

WHEREAS, the Trustee shall hereby declare the creation of the Class A Trust (as defined below) for the benefit of Holders of the Class A Certificates (as defined below) to be issued in respect of such Class A Trust, and the initial Holders of the Class A Certificates, as grantors of such Class A Trust, by their respective acceptances of the Class A Certificates, shall join in the creation of the Class A Trust with the Trustee;

WHEREAS, all Certificates to be issued by the Class A Trust will evidence Fractional Undivided Interests in the Class A Trust and will have no rights, benefits or interests in respect of any other separate Trust or the property held therein;

WHEREAS, the Escrow Agent and the Underwriters have contemporaneously herewith entered into an Escrow Agreement with the Escrow Paying Agent pursuant to which the Underwriters will deliver to the Escrow Agent the proceeds from the sale of the Class A Certificates, and have irrevocably instructed the Escrow Agent to withdraw and pay funds from such proceeds upon request and proper certification by the Trustee to purchase Series A Equipment Notes pursuant to the NPA and the applicable Participation Agreements from time to time prior to the Delivery Period Termination Date;

WHEREAS, the Escrow Agent on behalf of the Class A Certificateholders has contemporaneously herewith entered into a Deposit Agreement with the Depositary under which

the Deposits referred to therein will be made and from which Deposits it will withdraw funds to allow the Trustee to purchase Series A Equipment Notes from time to time prior to the Delivery Period Termination Date;

WHEREAS, pursuant to the terms and conditions of the Basic Agreement, as supplemented by this Trust Supplement, the NPA and the Participation Agreements, the Trustee on behalf of the Class A Trust shall from time to time purchase the Series A Equipment Notes issued by the Company pursuant to the Indentures related to the Aircraft having the identical interest rate as, and final maturity dates not later than the final expected Regular Distribution Date of, the Class A Certificates issued hereunder and shall hold such Series A Equipment Notes in trust for the benefit of the Class A Certificateholders;

WHEREAS, pursuant to the terms and conditions of the Intercreditor Agreement referred to in Section 3.02(i) hereof, the Trustee and the other parties thereto will agree to the terms of subordination set forth therein;

WHEREAS, all of the conditions and requirements necessary to make this Trust Supplement, when duly executed and delivered, a valid, binding and legal instrument in accordance with its terms and for the purposes herein expressed, have been done, performed and fulfilled, and the execution and delivery of this Trust Supplement in the form and with the terms hereof have been in all respects duly authorized;

WHEREAS, the Basic Agreement, as supplemented by this Trust Supplement, is subject to the provisions of the Trust Indenture Act and shall, to the extent applicable, be governed by such provisions;

NOW, THEREFORE, in consideration of the mutual agreements herein contained, and of other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I

DEFINITIONS

Section 1.01 Definitions . Unless otherwise specified herein or the context otherwise requires, capitalized terms used but not defined herein, including in the recitals hereto, shall have the respective meanings set forth, and shall be construed and interpreted in the manner described, in the Basic Agreement. As used herein, the term “ Agreement ” shall mean the Basic Agreement, as supplemented by this Trust Supplement. For all purposes of the Basic Agreement as supplemented by this Trust Supplement, the following capitalized terms have the following meanings (any term used herein which is defined in both this Trust Supplement and the Basic Agreement shall have the meaning assigned thereto in this Trust Supplement for purposes of the Basic Agreement as supplemented by this Trust Supplement).

Accounts : Has the meaning ascribed thereto in the Deposit Agreement.

Additional Certificateholder : Has the meaning specified in the Intercreditor Agreement.

Additional Certificates : Has the meaning specified in the Intercreditor Agreement.

Additional Equipment Note : Has the meaning specified in the Intercreditor Agreement.

Additional Trust : Has the meaning specified in the Intercreditor Agreement.

Additional Trust Agreement : Has the meaning specified in the Intercreditor Agreement.

Affiliate : Has the meaning specified in the Intercreditor Agreement.

Agreement : Has the meaning specified in the first paragraph of Section 1.01 of this Trust Supplement.

Aircraft : Means the “Aircraft” specified in the recitals to this Trust Supplement and as further defined in the applicable Indenture, and any Replacement Aircraft (as defined in the applicable Indenture) in replacement thereof in accordance with the applicable Indenture.

American : Has the meaning specified in the preamble to this Trust Supplement.

Applicable Funding Date : Has the meaning specified in Section 7.01(b) of this Trust Supplement.

Applicable Notice of Purchase Withdrawal : Has the meaning specified in the Escrow Agreement.

Applicable Participation Agreement : Has the meaning specified in Section 7.01(b) of this Trust Supplement.

Basic Agreement : Has the meaning specified in the preamble to this Trust Supplement.

Business Day : Has the meaning specified in the Intercreditor Agreement.

Certificate : Means a Class A Certificate or a Class B Certificate, as applicable.

Certificate Buy-Out Event : Has the meaning specified in the Intercreditor Agreement.

Certificateholder : Means, with respect to any Class of Certificates, the Person in whose name a Certificate is registered in the Register for the Certificates of such Class.

Class : Has the meaning specified in the Intercreditor Agreement.

Class A Certificateholder : Means, at any time, any Certificateholder of one or more Class A Certificates.

Class A Certificates : Has the meaning specified in Section 3.01 of this Trust Supplement.

Class A Liquidity Facility : Has the meaning specified in the Intercreditor Agreement.

Class A Liquidity Provider : Has the meaning specified in the Intercreditor Agreement.

Class A Trust : Has the meaning specified in Section 2.01 of this Trust Supplement.

Class B Certificateholder : Has the meaning specified in the Intercreditor Agreement.

Class B Certificates : Has the meaning specified in the Intercreditor Agreement.

Class B Trust : Has the meaning specified in the Intercreditor Agreement.

Class B Trust Agreement : Has the meaning specified in the Intercreditor Agreement.

Class B Trustee : Has the meaning specified in the Intercreditor Agreement.

Code : Means the Internal Revenue Code of 1986, as amended.

Company : Has the meaning specified in the preamble to this Trust Supplement.

Corporate Trust Office : Has the meaning specified in the Intercreditor Agreement.

Cut-off Date : Has the meaning specified in Section 3.02(b) of this Trust Supplement.

Definitive Certificates : Has the meaning specified in Section 4.01(e) of this Trust Supplement.

Delivery Period Termination Date : Has the meaning specified in the NPA.

Deposit Agreement : Means, subject to Section 5 of the NPA, the Deposit Agreement (Class A), dated as of the date hereof, relating to the Class A Certificates between the Depositary and the Escrow Agent, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

Depositary : Means, subject to Section 5 of the NPA, Crédit Agricole Corporate and Investment Bank, acting through its New York Branch.

Deposits : Has the meaning specified in the Deposit Agreement.

Distribution Date : Means a Regular Distribution Date or a Special Distribution Date.

DTC : Has the meaning specified in Section 3.02(f) of this Trust Supplement.

DTC Participants : Has the meaning specified in Section 4.01(b) of this Trust Supplement.

Equipment Notes : Has the meaning specified in the Intercreditor Agreement.

ERISA : Means the Employee Retirement Income Security Act of 1974, as amended.

Escrow Agent : Means, initially, Wilmington Trust, National Association, a national banking association, and any replacement or successor therefor appointed in accordance with the Escrow Agreement.

Escrow Agreement : Means the Escrow and Paying Agent Agreement (Class A), dated as of the date hereof, relating to the Class A Certificates, among the Escrow Agent, the Escrow Paying Agent, the Trustee and the Underwriters, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

Escrow Paying Agent : Means the “Paying Agent” as defined in the Escrow Agreement.

Escrow Period Termination Date : Has the meaning specified in Section 5.01(c)(i) of this Trust Supplement.

Escrow Receipt : Means a receipt substantially in the form annexed to the Escrow Agreement representing a fractional undivided interest in the funds held in escrow thereunder.

Event of Default : With respect to any Indenture, has the meaning specified in Section 4.01 of such Indenture.

Event of Loss Withdrawal : Has the meaning specified in the Escrow Agreement.

Final Withdrawal : Has the meaning specified in the Escrow Agreement.

Final Withdrawal Date : Has the meaning specified in the Escrow Agreement.

Fractional Undivided Interests : Has the meaning specified in the Intercreditor Agreement.

Funding Date : Has the meaning specified in the NPA.

Funding Notice : Has the meaning specified in the NPA.

Global Certificate : Has the meaning specified in Section 4.01(b) of this Trust Supplement.

Holder : Means a Certificateholder.

Indenture : Has the meaning specified in the Intercreditor Agreement.

Indirect Participants : Has the meaning specified in Section 4.01(b) of this Trust Supplement.

Intercreditor Agreement : Has the meaning specified in Section 3.02(i) of this Trust Supplement.

Issuance Date : Has the meaning specified in Section 7.01(a) of this Trust Supplement.

Liquidity Provider : Has the meaning specified in the Intercreditor Agreement.

Loan Trustee : Means, with respect to any Indenture, the bank, trust company or other financial institution designated as loan trustee thereunder, and any successor to such loan trustee.

Note Documents : Means, collectively, the Participation Agreements, the Indentures, each Indenture Supplement (as defined in any Indenture), each Manufacturer’s Consent (as defined in any Indenture) and the Equipment Notes.

Notice of Purchase Withdrawal : Has the meaning specified in the Deposit Agreement.

NPA : Means the Note Purchase Agreement, dated as of the date hereof, among the Trustee, the Class B Trustee, the Company, the Escrow Agent, the Escrow Paying Agent and the Subordination Agent, providing for, among other things, the purchase of Series A Equipment Notes by the Trustee on behalf of the Class A Trust, as the same may be amended, supplemented or otherwise modified from time to time, in accordance with its terms.

Officer’s Certificate : Means a certificate signed, (a) in the case of the Company or the Parent, by the Chairman or Vice Chairman of the Board of Directors, the President, any Executive Vice President, any Senior Vice President, any Vice President, Treasurer or Assistant Treasurer of the Company or the Parent, as the case may be, or (b) in the case of the Trustee or the Loan Trustee, a Responsible Officer of the Trustee or such Loan Trustee, as the case may be.

Operative Agreements : Has the meaning specified in the Intercreditor Agreement.

Other Agreements : Means (i) the Class B Trust Agreement, (ii) the Basic Agreement as supplemented by a Trust Supplement (as defined in the Basic Agreement) relating to any Additional Trust and (iii) the Basic Agreement as supplemented by a Trust Supplement (as defined in the Basic Agreement) relating to any Refinancing Trust.

Other Trustees : Means the trustees under the Other Agreements, and any successor or other trustee appointed as provided therein.

Other Trusts : Means the Class B Trust, any Additional Trust, or any Refinancing Trust or Trusts, in each case created by the applicable Other Agreement.

Owned Aircraft : Has the meaning specified in the preamble to this Trust Supplement.

Owner Trust Aircraft : Has the meaning specified in the preamble to this Trust Supplement.

Parent : Means American Airlines Group Inc., a Delaware corporation and parent of American (together with its successors and assigns).

Participation Agreement : Has the meaning specified in the Intercreditor Agreement.

Paying Agent : Means, with respect to the Class A Certificates, the paying agent maintained and appointed for such Class A Certificates pursuant to Section 7.12 of the Basic Agreement.

Person : Means any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, trustee, unincorporated organization or government or any agency or political subdivision thereof.

Plan : Means a retirement plan or other employee benefit plan or arrangement, including for this purpose an individual retirement account, annuity or Keogh plan, that is subject to Title I of ERISA or Section 4975 of the Code, or such a plan or arrangement which is a foreign, church or governmental plan or arrangement exempt from Title I of ERISA and Section 4975 of the Code but subject to a Similar Law.

Pool Balance : Means, as of any date, (i) the original aggregate face amount of the Class A Certificates less (ii) the aggregate amount of all distributions made as of such date in respect of the Class A Certificates or in respect of Deposits other than distributions made in respect of interest or Premium or reimbursement of any costs or expenses incurred in connection therewith. The Pool Balance as of any date shall be computed after giving effect to any distribution with respect to unused Deposits, the payment of principal, if any, of the Series A Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on such date.

Pool Factor : Means, as of any Distribution Date, the quotient (rounded to the seventh decimal place) computed by dividing (i) the Pool Balance by (ii) the original aggregate face amount of the Class A Certificates. The Pool Factor as of any Distribution Date shall be computed after giving effect to any distribution with respect to unused Deposits, payment of principal, if any, of the Series A Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on that date.

Premium : Has the meaning specified in the Intercreditor Agreement.

Prospectus Supplement : Means the final Prospectus Supplement, dated September 2, 2014, relating to the offering of the Certificates.

Rating Agencies : Has the meaning specified in the Intercreditor Agreement.

Refinancing Certificateholders : Has the meaning specified in the Intercreditor Agreement.

Refinancing Certificates : Has the meaning specified in the Intercreditor Agreement.

Refinancing Equipment Notes : Has the meaning specified in the Intercreditor Agreement.

Refinancing Trust : Has the meaning specified in the Intercreditor Agreement.

Refinancing Trust Agreement : Has the meaning specified in the Intercreditor Agreement.

Register : Has the meaning specified in the Intercreditor Agreement.

Regular Distribution Date : Has the meaning specified in Section 3.02(c) of this Trust Supplement.

Replacement Depositary : Has the meaning specified in the NPA.

Replacement Depositary Agreement : Has the meaning specified in the NPA.

Replacement Liquidity Facility : Has the meaning specified in the Intercreditor Agreement.

Replacement Liquidity Provider : Has the meaning specified in the Intercreditor Agreement.

Responsible Officer : Has the meaning specified in the Intercreditor Agreement.

Scheduled Payment : Has the meaning specified in the Intercreditor Agreement.

Securities Act : Means the Securities Act of 1933, as amended.

Series A Equipment Notes : Has the meaning specified in the Intercreditor Agreement.

Similar Law : Means a foreign, federal, state, or local law which is substantially similar to the prohibited transaction provisions of Title I of ERISA or Section 4975 of the Code.

Special Distribution Date : Means, with respect to the Class A Certificates, each date on which a Special Payment is to be distributed as specified in this Agreement.

Special Payment : Means any payment (other than a Scheduled Payment) in respect of, or any proceeds of, any Equipment Note or the Collateral (as defined in any Indenture).

Special Payments Account : Means, with respect to the Class A Certificates, the account or accounts created and maintained for such series pursuant to Section 4.01(b) of the Basic Agreement (as modified by Section 7.01(c) of this Trust Supplement) and this Trust Supplement.

Subordination Agent : Has the meaning specified in the Intercreditor Agreement.

Triggering Event : Has the meaning specified in the Intercreditor Agreement.

Trust : Means the Class A Trust or the Class B Trust, as applicable.

Trustee : Has the meaning specified in the preamble to this Trust Supplement.

Trust Indenture Act : Means the Trust Indenture Act of 1939, as amended.

Trust Property : Means (i) subject to the Intercreditor Agreement, the Series A Equipment Notes held as the property of the Class A Trust, all monies at any time paid thereon and all monies due and to become due thereunder, (ii) funds from time to time deposited in the Certificate Account and the Special Payments Account and, subject to the Intercreditor Agreement, any proceeds from the sale by the Trustee pursuant to Article VI of the Basic Agreement of any Equipment Notes and (iii) all rights of the Class A Trust and the Trustee, on behalf of the Class A Trust, under the Intercreditor Agreement, the Escrow Agreement, the NPA and the Class A Liquidity Facility, including, without limitation, all rights to receive certain payments thereunder, and all monies paid to the Trustee on behalf of the Class A Trust pursuant to the Intercreditor Agreement or the Class A Liquidity Facility, provided , that rights with respect to the Deposits or under the Escrow Agreement, except for the right to direct withdrawals for the purchase of Series A Equipment Notes to be held herein, will not constitute Trust Property.

Trust Supplement : Has the meaning specified in the preamble hereto.

Underwriters : Means Goldman, Sachs & Co., Credit Suisse Securities (USA) LLC, Deutsche Bank Securities Inc., Morgan Stanley & Co. LLC, Citigroup Global Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Barclays Capital Inc., BNP Paribas Securities Corp., Credit Agricole Securities (USA) Inc. and J.P. Morgan Securities LLC.

Underwriting Agreement : Means the Underwriting Agreement, dated September 2, 2014, among the Company, the Depositary and the Underwriters as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

Withdrawal Certificate : Has the meaning specified in the Escrow Agreement.

ARTICLE II

DECLARATION OF TRUST

Section 2.01 Declaration of Trust . The Trustee hereby declares the creation of a Trust, designated the “American Airlines Pass Through Trust 2014-1A” (the “ Class A Trust ”), for the benefit of the Holders of the Class A Certificates to be issued in respect of such Class A Trust, and the initial Holders of the Class A Certificates, as grantors of such Class A Trust, by their respective acceptances of the Class A Certificates, join in the creation of such Class A Trust with the Trustee. The Trustee, by the execution and delivery of this Trust Supplement, acknowledges its acceptance of all right, title and interest in and to the Trust Property to be acquired pursuant to Section 7.01(b) of this Trust Supplement, the NPA and the Participation Agreements and the Trustee will hold such right, title and interest for the benefit of all present and future Holders of the Class A Certificates, upon the trusts set forth in the Basic Agreement and this Trust Supplement. The provisions of this Section 2.01 supersede and replace the provisions of Sections 2.03 of the Basic Agreement, with respect to the Class A Trust.

Section 2.02 Permitted Activities . The Class A Trust may only engage in the transactions contemplated by the Operative Agreements, subject to Section 9.05 of this Trust Supplement.

ARTICLE III

THE CERTIFICATES

Section 3.01 The Certificates . There is hereby created a series of Certificates to be issued under this Agreement designated as “American Airlines Pass Through Certificates, Series 2014-1A” (the “ Class A Certificates ”). Each Class A Certificate represents a Fractional Undivided Interest in the Class A Trust created hereby. The Class A Certificates shall be the only instruments evidencing a Fractional Undivided Interest in the Class A Trust. The Class A Certificates do not represent indebtedness of the Class A Trust, and references herein to interest accruing on the Class A Certificates are included for purposes of computation only.

Section 3.02 Terms and Conditions . The terms and conditions applicable to the Class A Certificates and the Class A Trust are as follows:

(a) The aggregate face amount of the Class A Certificates that may be authenticated and delivered under this Agreement (except for Class A Certificates authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Class A Certificates pursuant to Sections 3.03, 3.04, 3.05 and 3.06 of the Basic Agreement and Section 4.03 of this Trust Supplement) is $741,460,000.

(b) The Cut-off Date (the “ Cut-off Date ”) is the earlier of (i) the day after the Delivery Period Termination Date, and (ii) the date on which a Triggering Event occurs.

(c) The distribution dates with respect to any payment of Scheduled Payments (each such distribution date, a “ Regular Distribution Date ”) shall be each April 1 and each October 1, commencing on April 1, 2015, until payment of all of the Scheduled Payments to be made under the Equipment Notes has been made; provided , however , that, if any such day shall not be a Business Day, the related distribution shall be made on the next succeeding Business Day without additional interest.

(d) The Special Distribution Date with respect to the Class A Certificates means any Business Day on which a Special Payment is to be distributed pursuant to this Agreement.

(e) At the Escrow Agent’s request under the Escrow Agreement, the Trustee shall affix the corresponding Escrow Receipt to each Class A Certificate. In any event, any transfer or exchange of any Class A Certificate shall also effect a transfer or exchange of the related Escrow Receipt. Prior to the Final Withdrawal Date, no transfer or exchange of any Class A Certificate shall be permitted unless the corresponding Escrow Receipt is attached thereto and also is so transferred or exchanged. By acceptance of any Class A Certificate to which an Escrow Receipt is attached, each holder of such a Class A Certificate acknowledges and accepts the restrictions on transfer of the Escrow Receipt as set forth herein, in such Escrow Receipt, and in the Escrow Agreement.

(f) The Class A Certificates shall be in the form attached hereto as Exhibit A, shall be Book-Entry Certificates (subject to Section 3.05(d) of the Basic Agreement and Section 4.03 of this Trust Supplement), and shall be subject to the conditions set forth in the Letter of Representations between the Class A Trust and The Depository Trust Company and any successor agency thereto (“ DTC ”), as initial Clearing Agency, attached hereto as Exhibit B.

(g) The proceeds of the offering of Class A Certificates issued by the Class A Trust and related Escrow Receipts shall be deposited in the Accounts and shall be used in accordance with the Escrow Agreement, the Deposit Agreement and the NPA to acquire from time to time the Series A Equipment Notes described in Schedule III to the NPA that relate to the Aircraft and to the Note Documents described in Schedule III to the NPA.

(h) Any Person acquiring or accepting a Class A Certificate or an interest therein will, by such acquisition or acceptance, be deemed to (i) represent and warrant to the Company, the Loan Trustees and the Trustee that either (A) no assets of a Plan or any trust established with respect to a Plan have been used to purchase or hold Class A Certificates or an interest therein or (B) the purchase and holding of Class A Certificates or interests therein by such Person is exempt from the prohibited transaction restrictions of ERISA and the Code or provisions of Similar Law pursuant to one or more prohibited transaction statutory or administrative exemptions, and (ii) direct the Trustee to invest the assets held in the Trust pursuant to, and take all other actions contemplated by, the terms and conditions of the Basic Agreement, this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the Escrow Agreement, the NPA, and each Participation Agreement.

(i) The Class A Certificates will be subject to the following Intercreditor Agreement (and to the extent the terms thereof (including the definitions of defined terms) are inconsistent with the terms of this Agreement, such Intercreditor Agreement shall control): that certain Intercreditor Agreement, dated as of the date hereof, among Wilmington Trust Company, as Trustee and Class B Trustee, Crédit Agricole Corporate and Investment Bank, acting through its New York Branch, as each Liquidity Provider, and Wilmington Trust Company, as Subordination Agent thereunder (as may be amended, supplemented or otherwise modified from time to time in accordance with its terms, the “ Intercreditor Agreement ”). Upon the occurrence of a Certificate Buy-Out Event, the holders of the Class B Certificates and Additional Certificates (if any) shall have the rights set forth in Article VI hereof. The Trustee and, by acceptance of any Class A Certificate, each Certificateholder thereof, agrees to be bound by all of the provisions of the Intercreditor Agreement, including the subordination provisions of Section 9.09 thereof.

(j) The Class A Certificates have the benefit of the Deposit Agreement and the Escrow Agreement.

(k) The Class A Certificates will have the benefit of the following liquidity facility: that certain Revolving Credit Agreement (2014-1A), dated as of the date hereof, between Wilmington Trust Company, as Subordination Agent under the Intercreditor Agreement, as agent and trustee for the Class A Trust, and the Class A Liquidity Provider.

(l) The Responsible Party is the Company.

(m) The Parent will not initially guarantee the obligations of the Company under any Series A Equipment Notes to be acquired by the Class A Trust.

(n) The Company, the Parent, any other obligor upon the Class A Certificates, and any Affiliate of any thereof may acquire, tender for, purchase, own, hold, become the pledgee of and otherwise deal with any Class A Certificate.

ARTICLE IV

ISSUANCE AND TRANSFER OF THE CLASS A CERTIFICATES

Section 4.01 Issuance of Class A Certificates . (a) The Class A Certificates will be issued in minimum denominations of $2,000 (or such other denomination that is the lowest integral multiple of $1,000 that is, at the time of issuance, equal to at least 1,000 euros) and integral multiples of $1,000 in excess thereof, except that one Certificate may be issued in a different denomination. Each Class A Certificate shall be dated the date of its authentication.

(b) The Class A Certificates shall be issued initially in the form of one or more global Certificates in definitive, fully registered form without interest coupons, substantially in the form of Exhibit A hereto (each, a “ Global Certificate ”), duly executed and authenticated by the Trustee as hereinafter provided. Each Global Certificate will be registered in the name of a nominee for DTC for credit to the account of members of, or participants in, DTC (“ DTC Participants ”) or to the account of indirect participants that clear through or maintain a custodial relationship with a DTC Participant, either directly or indirectly (“ Indirect Participants ”), and

will be deposited with the Trustee, at its Corporate Trust Office, as custodian for DTC. The aggregate principal amount of a Global Certificate may from time to time be increased or decreased by adjustments made on the records of DTC or its nominee, or of the Trustee, as custodian for DTC or its nominee for such Global Certificate which adjustments shall be conclusive as to the aggregate principal amount of any such Global Certificate.

(c) [Reserved]

(d) [Reserved]

(e) Certificated Certificates in registered form shall be issued in substantially the form set forth as Exhibit A hereto (the “ Definitive Certificates ”) and shall be in fully registered form and shall be typed, printed, lithographed or engraved or produced by any combination of these methods or may be produced in any other manner, all as determined by the officers executing such Definitive Certificates, as evidenced by their execution of such Definitive Certificates.

Section 4.02 Legends . (a) Each Global Certificate shall bear the following legend on the face thereof:

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“ DTC ”), TO THE TRUSTEE OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

(b) Each Class A Certificate shall bear the following legend on the face thereof:

BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF A PLAN OR ANY TRUST ESTABLISHED WITH RESPECT TO A PLAN HAVE BEEN USED TO ACQUIRE THIS CERTIFICATE OR AN INTEREST HEREIN OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE OR INTEREST HEREIN BY SUCH A PERSON ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE OR SUBSTANTIALLY SIMILAR PROVISIONS OF FOREIGN, FEDERAL, STATE OR LOCAL LAW PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS. CERTAIN TERMS USED IN THIS PARAGRAPH SHALL HAVE THE MEANINGS SPECIFIED IN THE AGREEMENT.

Section 4.03 Book-Entry Provisions for Global Certificates . (a) DTC Participants shall have no rights under this Agreement with respect to any Global Certificate held on their behalf by DTC, or the Trustee as its custodian, and DTC may be treated by the Trustee and any agent of the Trustee as the absolute owner of such Global Certificate for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Trustee or any agent of the Trustee from giving effect to any written certification, proxy or other authorization furnished by DTC or shall impair, as between DTC and its DTC Participants, the operation of customary practices governing the exercise of the rights of a holder of any Class A Certificate. Upon the issuance of any Global Certificate, the Registrar or its duly appointed agent shall record Cede & Co. or another nominee of DTC as the registered holder of such Global Certificate.

(b) Transfers of any Global Certificate shall be limited to transfers of such Global Certificate in whole, but not in part, to nominees of DTC, DTC’s successor or such successor’s nominees. Beneficial interests in Global Certificates may be transferred in accordance with the rules and procedures of DTC and the provisions of Section 4.02 of this Trust Supplement. Definitive Certificates shall be delivered to all beneficial owners of beneficial interests in Global Certificates, if (i) DTC notifies the Trustee in writing that it is no longer willing or able to discharge properly its responsibilities as depositary for the Global Certificates, and a successor depositary is not appointed by the Trustee within 90 days of such notice, (ii) the Company, at its option, advises the Trustee in writing that it elects to terminate the book-entry system through DTC or (iii) after the occurrence and during the continuance of an Event of Default, Class A Certificateholders with Fractional Undivided Interests aggregating not less than a majority in interest in the Class A Trust advise the Trustee, the Company and DTC through DTC Participants in writing that the continuation of a book-entry system through DTC (or a successor thereto) is no longer in the Class A Certificateholders’ best interests. Neither the Company nor the Trustee shall be liable if the Company or the Trustee is unable to locate a qualified successor clearing system.

(c) [Reserved]

(d) In connection with the transfer of the entire amount of a Global Certificate to the beneficial owners thereof pursuant to paragraph (b) of this Section 4.03 , such Global Certificate shall be deemed to be surrendered to the Trustee for cancellation, and the Trustee shall execute, authenticate and deliver to each beneficial owner, in exchange for the beneficial interest thereof in such Global Certificate, an equal aggregate principal amount of Definitive Certificates of authorized denominations, in each case as such beneficial owner and related aggregate principal amount shall have been identified and otherwise set forth (together with such other information as may be required for the registration of such Definitive Certificates) in registration instructions that shall have been delivered by or on behalf of DTC to the Trustee. None of the Company, the Registrar, the Paying Agent nor the Trustee shall be liable for any delay in delivery of such registration instructions and each such Person may conclusively rely on, and shall be protected in relying on, such registration instructions. Upon the issuance of any Definitive Certificate, the Trustee shall recognize the Person in whose name such Definitive Certificate is registered in the Register as a Certificateholder hereunder.

(e) The registered Holder of a Global Certificate may grant proxies and otherwise authorize any Person, including DTC Participants and Persons that may hold interests through DTC Participants, to take any action which a Holder is entitled to take under this Agreement or the Class A Certificates.

(f) Neither the Company, nor the Trustee, nor the Registrar, nor the Paying Agent shall have any responsibility or liability for: (i) any aspect of the records relating to or payments made on account of beneficial ownership interests in the Global Certificates, (ii) maintaining, supervising or reviewing any records relating to such beneficial ownership interests or (iii) the performance by DTC, any DTC Participant or any Indirect Participant of their respective obligations under the rules, regulations and procedures creating and affecting DTC and its operation or any other statutory, regulatory, contractual or customary procedures governing their obligations.

ARTICLE V

DISTRIBUTION; STATEMENTS TO CERTIFICATEHOLDERS

Section 5.01 Statements to Certificateholders . (a) On each Regular Distribution Date and Special Distribution Date, the Trustee will include with each distribution to the Class A Certificateholders a statement, giving effect to the distribution to be made on such Regular Distribution Date or Special Distribution Date, setting forth the following information (per $1,000 aggregate face amount of Class A Certificates as to clauses (ii) , (iii) , (iv)  and (v)  below):

(i) the aggregate amount of funds distributed on such Distribution Date under this Agreement and the Escrow Agreement, indicating the amount, if any, allocable to each source (including any portion thereof paid by the Class A Liquidity Provider);

(ii) the amount of such distribution under this Agreement allocable to principal and the amount allocable to Premium (if any);

(iii) the amount of such distribution under this Agreement allocable to interest (including any portion thereof paid by the Class A Liquidity Provider);

(iv) the amount of such distribution under the Escrow Agreement allocable to interest, if any;

(v) the amount of such distribution under the Escrow Agreement allocable to unused Deposits, if any; and

(vi) the Pool Balance and the Pool Factor.

With respect to the Class A Certificates registered in the name of DTC or its nominee, on the Record Date prior to each Regular Distribution Date and Special Distribution Date, the Trustee will request that DTC post on its Internet bulletin board a securities position

listing setting forth the names of all the DTC Participants reflected on DTC’s books as holding interests in the Class A Certificates on such Record Date. On each Regular Distribution Date and Special Distribution Date, the Trustee will mail to each such DTC Participant whose name has been provided by DTC the statement described above and will make available additional copies as requested by such DTC Participants for forwarding to holders of interests in the Class A Certificates.

(b) Within a reasonable period of time after the end of each calendar year but not later than the latest date permitted by law, the Trustee shall furnish to each Person who at any time during such calendar year was a Class A Certificateholder of record a statement containing the sum of the amounts determined pursuant to clauses (a)(i) , (a)(ii) , (a)(iii) , (a)(iv) and (a)(v) above for such calendar year or, in the event such Person was a Class A Certificateholder of record during a portion of such calendar year, for the applicable portion of such year, and such other items as are readily available to the Trustee and which a Class A Certificateholder may reasonably request as necessary for the purpose of such Certificateholder’s preparation of its United States federal income tax returns or foreign income tax returns. With respect to Class A Certificates registered in the name of DTC or its nominee, such statement and such other items shall be prepared on the basis of information supplied to the Trustee by the DTC Participants and shall be delivered by the Trustee to such DTC Participants to be available for forwarding by such DTC Participants to the holders of interests in the Class A Certificates.

(c) Promptly following:

(i) the Delivery Period Termination Date, or, if later, the date of any Final Withdrawal (the later of such dates, the “ Escrow Period Termination Date ”), if there has been, on or prior to the Escrow Period Termination Date, (A) any change in the information set forth in clauses (y)  and (z)  below from that set forth in page S-57 of the Prospectus Supplement, or (B) any early redemption or purchase of, or any default in the payment of principal or interest in respect of, any of the Series A Equipment Notes held in the Class A Trust, any Event of Loss Withdrawal or any Final Withdrawal, and

(ii) the date of any early redemption or purchase of, or any default in the payment of principal or interest in respect of, any of the Series A Equipment Notes held in the Class A Trust, in either case described in this clause (ii) , occurring after the Escrow Period Termination Date,

the Trustee shall furnish to Class A Certificateholders of record on such date a statement setting forth (x) the expected Pool Balances for each subsequent Regular Distribution Date following the Delivery Period Termination Date, (y) the related Pool Factors for such Regular Distribution Dates and (z) the expected principal distribution schedule of the Series A Equipment Notes, in the aggregate, held as Trust Property at the date of such notice. With respect to the Class A Certificates registered in the name of DTC, on the Delivery Period Termination Date, the Trustee will request from DTC a securities position listing setting forth the names of all DTC Participants reflected on DTC’s books as holding interests in the Class A Certificates on such date. The Trustee will mail to each such DTC Participant the statement described above and will make available additional copies as requested by such DTC Participant for forwarding to holders of interests in the Class A Certificates.

(d) If the aggregate principal payments scheduled for a Regular Distribution Date prior to the Delivery Period Termination Date differ from the amount thereof set forth for the Class A Certificates on page S-57 of the Prospectus Supplement, by no later than the 15th day prior to such Regular Distribution Date, the Trustee shall mail written notice of the actual amount of such scheduled payments to the Class A Certificateholders of record as of a date within 15 Business Days prior to the date of mailing.

(e) The provisions of this Section 5.01 supersede and replace the provisions of Section 4.03 of the Basic Agreement in their entirety with respect to the Class A Trust.

ARTICLE VI

DEFAULT

Section 6.01 Purchase Rights of Certificateholders . (a) By acceptance of its Class A Certificate, each Class A Certificateholder agrees that at any time after the occurrence and during the continuation of a Certificate Buy-Out Event:

(i) so long as no Additional Certificateholder has elected to exercise its rights to purchase Certificates pursuant to, and given notice of such election in accordance with, this Section 6.01 (upon such election and notification thereof, the right specified in this Section 6.01(a)(i) shall be suspended and (x) upon consummation of the purchase pursuant to such election, be terminated with respect to such Certificate Buy-Out Event, or (y) upon failure to consummate such purchase on the proposed purchase date, such right shall be revived), each Class B Certificateholder (other than the Company or any of its Affiliates) shall have the right to purchase all, but not less than all, of the Class A Certificates upon ten days’ prior written irrevocable notice to the Trustee, the Class B Trustee and each other Class B Certificateholder, on the third Business Day following the expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period any other Class B Certificateholder(s) (other than the Company or any of its Affiliates) notifies such purchasing Class B Certificateholder that such other Class B Certificateholder(s) want(s) to participate in such purchase, then such other Class B Certificateholder(s) (other than the Company or any of its Affiliates) may join with the purchasing Class B Certificateholder to purchase all, but not less than all, of the Class A Certificates pro rata based on the Fractional Undivided Interest in the Class B Trust held by each such Class B Certificateholder and (B) upon consummation of such purchase no Class B Certificateholder shall have a right to purchase the Class A Certificates pursuant to this Section 6.01(a)(i) during the continuance of such Certificate Buy-Out Event;

(ii) if any Additional Certificates are issued by an Additional Trust, each Additional Certificateholder (other than the Company or any of its Affiliates) shall have the right (which shall not expire upon any purchase of the Class A Certificates pursuant to clause (i)  above) to purchase all, but not less than all, of the Class A Certificates and the Class B Certificates upon ten days’ prior written irrevocable notice to the Trustee, the Class B Trustee and each other Additional Certificateholder, on the third Business Day following the expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period any other Additional Certificateholder(s) (other than the

Company or any of its Affiliates) notifies such purchasing Additional Certificateholder that such other Additional Certificateholder(s) want(s) to participate in such purchase, then such other Additional Certificateholder(s) (other than the Company or any of its Affiliates) may join with the purchasing Additional Certificateholder to purchase all, but not less than all, of the Class A Certificates and the Class B Certificates pro rata based on the Fractional Undivided Interest in the Additional Trust held by each such Additional Certificateholder and (B) upon consummation of such purchase no Additional Certificateholder shall have a right to purchase the Class A Certificates and the Class B Certificates pursuant to this Section 6.01(a)(ii) during the continuance of such Certificate Buy-Out Event; and

(iii) if any Refinancing Certificates are issued, each Refinancing Certificateholder shall have the same right (subject to the same terms and conditions) to purchase Certificates pursuant to this Section 6.01(a) (and to receive notice in connection therewith) as the Certificateholders of the Class that such Refinancing Certificates refinanced.

The purchase price with respect to the Class A Certificates shall be equal to the Pool Balance of the Class A Certificates, together with accrued and unpaid interest in respect thereof to the date of such purchase, and any other amounts then due and payable to the Class A Certificateholders under this Agreement, the Intercreditor Agreement, the Escrow Agreement, any Series A Equipment Note held as the property of the Class A Trust or the related Indenture and Participation Agreement or on or in respect of the Class A Certificates but without any Premium, provided , however , that if such purchase occurs after (x) a record date specified in Section 2.03 of the Escrow Agreement relating to the distribution of unused Deposits and/or accrued and unpaid interest on Deposits and prior to or on the related distribution date under the Escrow Agreement, such purchase price shall be reduced by the aggregate amount of unused Deposits and/or interest to be distributed under the Escrow Agreement (which deducted amounts shall remain distributable to, and may be retained by, the Class A Certificateholders as of such record date) or (y) the Record Date relating to any Distribution Date, such purchase price shall be reduced by the amount to be distributed hereunder on such related Distribution Date (which deducted amounts shall remain distributable to, and may be retained by, the Class A Certificateholders as of such Record Date); provided , further , that no such purchase of Class A Certificates pursuant to this Section 6.01(a) shall be effective unless the purchaser(s) shall certify to the Trustee that contemporaneously with such purchase, such purchaser(s) is purchasing, pursuant to the terms of this Agreement, the Class B Trust Agreement, the Additional Trust Agreement (if any) or the applicable Refinancing Trust Agreement (as the case may be), and the Intercreditor Agreement, all of the Class A Certificates, the Class B Certificates and, if applicable, the Refinancing Certificates that are senior to the securities held by such purchaser(s). Each payment of the purchase price of the Class A Certificates referred to in the first sentence of this paragraph shall be made to an account or accounts designated by the Trustee and each such purchase shall be subject to the terms of this Section 6.01(a) . Each Class A Certificateholder agrees by its acceptance of its Class A Certificate that it will, upon payment from such Class B Certificateholder(s), Additional Certificateholder(s) or Refinancing Certificateholder(s), as the case may be, of the purchase price set forth in the first sentence of this paragraph, forthwith sell, assign, transfer and convey to the purchaser(s) thereof (without recourse, representation or warranty of any kind except as to its own acts) all of the right, title,

interest and obligation of such Class A Certificateholder in this Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement, the Class A Liquidity Facility, the NPA, the Note Documents and all Class A Certificates and Escrow Receipts held by such Class A Certificateholder (excluding all right, title and interest under any of the foregoing to the extent such right, title or interest is with respect to an obligation not then due and payable as respects any action or inaction or state of affairs occurring prior to such sale) and the purchaser(s) shall assume all of such Class A Certificateholder’s obligations under this Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement, the Class A Liquidity Facility, the NPA, the Note Documents and all such Class A Certificates and Escrow Receipts. The Class A Certificates will be deemed to be purchased on the date payment of the purchase price is made notwithstanding the failure of any Class A Certificateholder to deliver any Class A Certificate and, upon such a purchase, (i) the Class A Certificateholders shall have no further rights with respect to the Class A Certificates and (ii) if the purchaser(s) shall so request, each such Class A Certificateholder will comply with all the provisions of Section 3.04 of the Basic Agreement and the applicable provisions of this Trust Supplement to enable new Class A Certificates to be issued to the purchaser(s) in such denominations otherwise authorized under this Agreement as it shall request. All charges and expenses in connection with the issuance of any such new Class A Certificates shall be borne by the purchaser(s) thereof.

(b) This Section 6.01 supplements and, to the extent inconsistent with any provision of Section 6.01(d) of the Basic Agreement, replaces the provisions of Section 6.01(d) of the Basic Agreement. Notwithstanding anything to the contrary set forth herein or in any Operative Agreement, the provisions of this Section 6.01 may not be amended in any manner without the consent of each Class A Certificateholder, Class B Certificateholder and Additional Certificateholder or, as the case may be, Refinancing Certificateholder (in each case, other than the Company or any of its Affiliates in its respective capacity as a Certificateholder) that would be adversely affected thereby; provided that the purchase price under this Section 6.01 (as in effect on the date hereof) for any Certificate held by the Company or any of its Affiliates shall not be modified without the prior written consent of the Company. For the avoidance of doubt, if a Certificate Buy-Out Event ceases to exist and another Certificate Buy-Out Event occurs and is continuing, the purchase rights set forth in Section 6.01(a) shall be revived notwithstanding any exercise of such rights during the continuance of any preceding Certificate Buy-Out Event.

ARTICLE VII

THE TRUSTEE

Section 7.01 Delivery of Documents; Delivery Dates . (a) The Trustee is hereby directed (i) to execute and deliver the Intercreditor Agreement, the Escrow Agreement and the NPA on or prior to the date of the initial issuance of the Class A Certificates (the “ Issuance Date ”), each in the form delivered to the Trustee by the Company, and (ii) subject to the respective terms thereof, to perform its obligations thereunder. Upon request of the Company and the satisfaction or waiver of the closing conditions specified in the Underwriting Agreement, the Trustee shall execute, deliver, authenticate, issue and sell Class A Certificates in authorized denominations equaling in the aggregate the amount set forth, with respect to the Class A Trust, in Schedule I to the Underwriting Agreement evidencing the entire ownership interest in the Class A Trust, which amount equals the maximum aggregate principal amount of Series A

Equipment Notes which may be purchased from time to time by the Trustee pursuant to the NPA. Except as provided in Sections 3.03, 3.05 and 3.06 of the Basic Agreement or Section 4.03 of this Trust Supplement, the Trustee shall not execute, authenticate or deliver Class A Certificates in excess of the aggregate amount specified in this paragraph. The provisions of this Section 7.01(a) supersede and replace the first three sentences of Section 2.02(a) of the Basic Agreement and the first sentence of Section 3.02(a) of the Basic Agreement, with respect to the Class A Trust.

(b) On or after the Issuance Date, the Company may deliver from time to time, and in accordance with Section 1(b) of the NPA, to the Trustee a Funding Notice relating to one or more Series A Equipment Notes. After receipt of such a Funding Notice and in any case no later than one Business Day prior to a Funding Date as to which such Funding Notice relates (the “ Applicable Funding Date ”), the Trustee shall (as and when specified in the Funding Notice) deliver to the Escrow Agent the Withdrawal Certificates and related Applicable Notices of Purchase Withdrawal, as contemplated by Section 1.02(c) of the Escrow Agreement and by such Funding Notice. The Trustee shall (as and when specified in such Funding Notice), subject to the conditions set forth in Section 2 of the NPA, enter into and perform its obligations under the Participation Agreement specified in such Funding Notice (the “ Applicable Participation Agreement ”) and cause such certificates, documents and legal opinions relating to the Trustee to be duly delivered as required by the Applicable Participation Agreement. If at any time prior to the Applicable Funding Date, the Trustee receives from the Company a notice pursuant to the first sentence of Section 1(f) of the NPA, then the Trustee shall give notice to the Depositary (with a copy to the Escrow Agent) of the cancellation of such Notice of Purchase Withdrawal relating to such Deposit or Deposits on such Applicable Funding Date as contemplated by Section 2.3 of the Deposit Agreement. Upon satisfaction of the conditions specified in the NPA and the Applicable Participation Agreement, the Trustee shall purchase the applicable Series A Equipment Notes with the proceeds of the withdrawals of one or more Deposits made on the Applicable Funding Date in accordance with the terms of the Deposit Agreement and the Escrow Agreement. The purchase price of such Series A Equipment Notes shall equal the principal amount of such Series A Equipment Notes. Amounts withdrawn from such Deposit or Deposits in excess of the purchase price of the Series A Equipment Notes or to the extent not applied on the Applicable Funding Date to the purchase price of the Series A Equipment Notes shall be re-deposited by the Trustee with the Depositary on the Applicable Funding Date in accordance with the terms of the Deposit Agreement. The provisions of this Section 7.01(b) supersede and replace the provisions of Section 2.02(b) of the Basic Agreement with respect to the Class A Trust, and no provisions of the Basic Agreement relating to Postponed Notes and Section 2.02 of the Basic Agreement shall apply to the Class A Trust.

(c) With respect to the Class A Trust, Section 4.01(b) of the Basic Agreement is superseded and replaced in its entirety with the following: “The Trustee shall establish and maintain on behalf of the Class A Certificateholders a Special Payments Account as one or more accounts, which shall be non-interest bearing except as provided in Section 4.04 of the Basic Agreement. The Trustee shall hold the Special Payments Account in trust for the benefit of the Class A Certificateholders and shall make or permit withdrawals therefrom only as provided in the Agreement or the Intercreditor Agreement. On each day when one or more Special Payments are made to the Trustee under the Intercreditor Agreement, the Trustee, upon receipt thereof, shall immediately deposit the aggregate amount of such Special Payments in the Special Payments Account.”

(d) With respect to the Class A Trust, the second sentence of Section 4.02(c) of the Basic Agreement shall be superseded and replaced in its entirety with the following sentence: “Subject to the provisions of the Intercreditor Agreement: (i) in the event of redemption or purchase of Series A Equipment Notes held in the Class A Trust, such notice shall be mailed not less than 15 days prior to the Special Distribution Date for the Special Payment resulting from such redemption or purchase, which Special Distribution Date shall be the date of such redemption or purchase; and (ii) in the case of any other Special Payments, such notice of Special Payment shall be mailed as soon as practicable after the Trustee has confirmed that it has received funds for such Special Payment and shall state the Special Distribution Date for such Special Payment, which shall occur 15 days after the date of such notice of Special Payment or (if such 15th day is not practicable) as soon as practicable thereafter.”

(e) With respect to the Class A Trust, clause (ii) of the third sentence of Section 4.02(c) of the Basic Agreement shall be amended by deleting in its entirety the parenthetical phrase “(taking into account any payment to be made by the Responsible Party pursuant to Section 2.02(b)).”

Section 7.02 Withdrawal of Deposits . If any Deposits remain outstanding on the Business Day next succeeding the Cut-off Date, the Trustee shall promptly give the Escrow Agent notice, as contemplated by clause (ii) of Section 1.02(f) of the Escrow Agreement, that the Trustee’s obligation to purchase Series A Equipment Notes under the NPA has terminated and the Cut-off Date has occurred.

Section 7.03 The Trustee . (a) Subject to Section 7.04 of this Trust Supplement and Section 7.15 of the Basic Agreement, the Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the NPA or the Escrow Agreement or the due execution hereof or thereof by the Company or the other parties thereto (other than the Trustee), or for or in respect of the recitals and statements contained herein or therein, all of which recitals and statements are made solely by the Company or the other parties thereto (other than the Trustee), except that the Trustee hereby represents and warrants that each of this Trust Supplement, the Basic Agreement, each Class A Certificate, the Intercreditor Agreement, the NPA and the Escrow Agreement has been executed and delivered by one of its officers who is duly authorized to execute and deliver such document on its behalf.

(b) The Trustee shall at all times be a bank or trust company, organized and doing business under the laws of the United States or any state thereof, a substantial part of the business of which consists of (i) receiving deposits and making loans or (ii) exercising fiduciary powers similar to those permitted to national banks by the Comptroller of the Currency, and which is subject to supervision and examination by state or federal authority having supervision over banking institutions.

Section 7.04 Representations and Warranties of the Trustee . The Trustee hereby represents and warrants that:

(a) the Trustee has full power, authority and legal right to execute, deliver and perform this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party and has taken all necessary action to authorize the execution, delivery and performance by it of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party;

(b) the execution, delivery and performance by the Trustee of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party (i) will not violate any provision of any United States federal law governing its trust powers or the law of the state of the United States where it is located governing the banking and trust powers of the Trustee or any order, writ, judgment, or decree of any court, arbitrator or governmental authority applicable to the Trustee or any of its assets, (ii) will not violate any provision of the charter of the Trustee, and (iii) will not violate any provision of, or constitute, with or without notice or lapse of time, a default under, or result in the creation or imposition of, any lien on any properties included in the Trust Property pursuant to the provisions of any mortgage, indenture, contract, agreement or other undertaking to which it is a party, which violation, default or lien could reasonably be expected to have an adverse effect on the Trustee’s performance or ability to perform its duties hereunder or thereunder or on the transactions contemplated herein or therein;

(c) the execution, delivery and performance by the Trustee of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party will not require the authorization, consent, or approval of, the giving of notice to, the filing or registration with, or the taking of any other action in respect of, any governmental authority or agency of the United States or the state of the United States where it is located regulating the corporate trust activities of the Trustee; and

(d) this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party have been, or will be, as applicable, duly executed and delivered by the Trustee and constitute, or will constitute, as applicable, the legal, valid and binding agreements of the Trustee, enforceable against it in accordance with their respective terms; provided , however , that enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and (ii) general principles of equity.

Section 7.05 Trustee Liens . The Trustee in its individual capacity agrees, in addition to the agreements contained in Section 7.17 of the Basic Agreement, that it will at its own cost and expense promptly take any action as may be necessary to duly discharge and satisfy in full any Trustee’s Liens on or with respect to the Trust Property which are attributable to the Trustee in its individual capacity and which are unrelated to the transactions contemplated by the Intercreditor Agreement or the NPA.

ARTICLE VIII

ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS

Section 8.01 Amendment of Section 5.02 of the Basic Agreement . Section 5.02 of the Basic Agreement shall be amended, with respect to the Class A Trust, by (i) replacing the phrase “of this Agreement” set forth in paragraph (a) thereof with the phrase “of the Note Documents, of the NPA and of this Agreement” and (ii) replacing the phrase “under this Agreement” set forth in paragraph (b) thereof with the phrase “under this Agreement, the NPA and any Note Document”.

Section 8.02 Supplemental Agreements Without Consent of Class A Certificateholders . Without limitation of Section 9.01 of the Basic Agreement, under the terms of, and subject to the limitations contained in, Section 9.01 of the Basic Agreement, the Company may (but will not be required to), and the Trustee (subject to Section 9.03 of the Basic Agreement) shall, at the request of the Company at any time and from time to time, enter into (or, in the case of the Deposit Agreement, consent to) and, if applicable, request the Escrow Agent and Escrow Paying Agent to enter into (i) one or more agreements supplemental to the Escrow Agreement, the NPA or the Deposit Agreement, for any of the purposes set forth in clauses (1) through (15) of such Section 9.01, and (without limitation of the foregoing or Section 9.01 of the Basic Agreement) (a) clauses (2) and (3) of such Section 9.01 shall also be deemed to include the Company’s obligations under (in the case of clause (2)), and the Company’s rights and powers conferred by (in the case of clause (3)), the NPA, (b) references in clauses (4) and (5) of such Section 9.01 to “any Intercreditor Agreement, any Note Purchase Agreement, any Liquidity Facility or any Parent Guarantee” shall also be deemed to refer to “the Intercreditor Agreement, the Class A Liquidity Facility, the Escrow Agreement, the NPA, any Participation Agreement or the Deposit Agreement”, (c) references to “any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee” in clause (7) of such Section 9.01 shall also be deemed to refer to “the Intercreditor Agreement, the Class A Liquidity Facility, the Escrow Agreement, the NPA, any Participation Agreement or the Deposit Agreement” and (d) references to “any Intercreditor Agreement, any Note Purchase Agreement, any Indenture, any Liquidity Facility or any Parent Guarantee” and to “any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee” in clause (8) of such Section 9.01 shall also be deemed to refer to “the Intercreditor Agreement, the NPA, any Indenture, the Class A Liquidity Facility, the Escrow Agreement, the Deposit Agreement or any Participation Agreement”, (ii) one or more agreements supplemental to any Operative Agreement, the NPA, the Escrow Agreement or the Deposit Agreement to provide for the formation of an Additional Trust, the issuance of Additional Certificates, the purchase by an Additional Trust of applicable Additional Equipment Notes and other matters incidental thereto or otherwise contemplated by Section 2.01(b) of the Basic Agreement, all as provided in Section 4(a)(v) of the NPA and Section 8.01(d) of the Intercreditor Agreement, and (iii) one or more agreements supplemental to any Operative Agreement, the NPA, the Escrow Agreement or the Deposit Agreement to provide for the formation of one or more Refinancing Trusts, the issuance of Refinancing Certificates, the purchase by any Refinancing Trust of applicable Refinancing Equipment Notes and other matters incidental thereto or as otherwise contemplated by Section 2.01(b) of the Basic Agreement, all as provided in Section 4(a)(v) of the NPA and Section 8.01(c) of the Intercreditor Agreement. In addition, the following provisions of Section 9.01 of the Basic Agreement shall be amended,

with respect to the Class A Trust, as follows: (A) Section 9.01(1) of the Basic Agreement shall be amended by replacing the word, “including” with the word “or”; (B) Section 9.01(6) of the Basic Agreement shall be amended by inserting the phrase “(or to facilitate any listing of any Certificates on any exchange or quotation system) or any requirement of DTC or like depositary,” after the phrase “any exchange or quotation system on which the Certificates of any series are listed” but before the phrase “or of any regulatory body”; (C) Section 9.01(7) of the Basic Agreement shall be amended by inserting the phrase “to establish or” after the phrase “to such extent as shall be necessary” but before the phrase “to continue”; and (D) Section 9.01(8) of the Basic Agreement shall be amended by inserting the phrase “, or to evidence the substitution of a Liquidity Provider with a Replacement Liquidity Provider or to provide for a Replacement Liquidity Facility, all as provided in any Intercreditor Agreement; or to evidence the substitution of a Depositary with a Replacement Depositary or to provide for a Replacement Deposit Agreement, all as provided in the NPA; or to evidence and provide for the acceptance of appointment by a successor Escrow Agent or successor Escrow Paying Agent under the Escrow Agreement;” after the phrase “ one or more Trusts” but before the phrase “and to add to or change”.

Section 8.03 Supplemental Agreements with Consent of Class A Certificateholders . Without limitation of Section 9.02 of the Basic Agreement, the provisions of Section 9.02 of the Basic Agreement shall apply to agreements or amendments for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Escrow Agreement, the Deposit Agreement, the Class A Liquidity Facility or the NPA or modifying in any manner the rights and obligations of the Class A Certificateholders under the Escrow Agreement, the Deposit Agreement, the Class A Liquidity Facility or the NPA; provided that the provisions of Section 9.02(1) of the Basic Agreement shall be deemed to include reductions in any manner of, or delay in the timing of, any receipt by the Class A Certificateholders of payments upon the Deposits.

Section 8.04 Consent of Holders of Certificates Issued under Other Trusts . Notwithstanding any provision in Section 8.02 or Section 8.03 of this Trust Supplement to the contrary, no amendment or modification of Section 6.01 of this Trust Supplement shall be effective unless the trustee for each Class of Certificates affected by such amendment or modification shall have consented thereto.

ARTICLE IX

MISCELLANEOUS PROVISIONS

Section 9.01 Final Termination Date . The respective obligations and responsibilities of the Company and the Trustee created hereby and the Class A Trust created hereby shall terminate upon the distribution to all Class A Certificateholders and the Trustee of all amounts required to be distributed to them pursuant to this Agreement and the disposition of all property held as part of the Trust Property; provided , however , that in no event shall the Trust created hereby continue beyond one hundred ten (110) years following the date of execution of this Trust Supplement.

Section 9.02 Basic Agreement Ratified . Except and so far as herein expressly provided, all of the provisions, terms and conditions of the Basic Agreement are in all respects ratified and confirmed; and the Basic Agreement and this Trust Supplement shall be taken, read and construed as one and the same instrument. To the extent that any provisions of the Basic Agreement are superseded by any provisions of this Trust Supplement, any reference to such provisions of the Basic Agreement herein or in the Basic Agreement shall be deemed to be such provisions of this Trust Supplement.

Section 9.03 Governing Law . THIS AGREEMENT HAS BEEN DELIVERED IN THE STATE OF NEW YORK AND THIS AGREEMENT AND THE CLASS A CERTIFICATES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Section 9.04 Counterparts . This Trust Supplement may be executed in any number of counterparts (and no party shall be required to execute the same counterpart). Each counterpart of this Trust Supplement including a signature page or pages executed by each of the parties hereto shall be an original counterpart of this Trust Supplement, but all of such counterparts together constitute one instrument. The parties intend that faxed signatures and electronically imaged signatures such as .pdf files shall constitute original signatures and are binding on all parties. The original documents shall be promptly delivered, if requested.

Section 9.05 Intention of Parties . The parties hereto intend that the Class A Trust be classified for United States federal income tax purposes as a grantor trust under Subpart E, Part I, Subchapter J, Chapter 1 of Subtitle A of the Code, and not as a trust or association taxable as a corporation or as a partnership. Each Certificateholder of, and each Person acquiring a beneficial interest in, a Class A Certificate, by its acceptance of its Class A Certificate or a beneficial interest therein, agrees to treat the Class A Trust as a grantor trust for all United States federal, state and local income tax purposes. The Trustee shall not be authorized or empowered to do anything that would cause the Class A Trust to fail to qualify as a grantor trust for such tax purposes (including as subject to this restriction, acquiring any Aircraft by bidding the Equipment Notes relating thereto or otherwise, or taking any action with respect to any such Aircraft once acquired).

Section 9.06 Submission to Jurisdiction . (a) Each of the parties hereto, to the extent it may do so under applicable law, for purposes hereof and of all other Operative Agreements hereby (i) irrevocably submits itself to the non-exclusive jurisdiction of the courts of the State of New York sitting in the City of New York and to the non-exclusive jurisdiction of the United States District Court for the Southern District of New York, for the purposes of any suit, action or other proceeding arising out of this Agreement, the subject matter hereof or any of the transactions contemplated hereby brought by any party or parties hereto or thereto, or their successors or permitted assigns, (ii) waives, and agrees not to assert, by way of motion, as a defense, or otherwise, in any such suit, action or proceeding, that the suit, action or proceeding is brought in an inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Agreement or the subject matter hereof or any of the transactions contemplated hereby may not be enforced in or by such courts, (iii) agrees that service of process in any such action or proceeding may be effected by mailing a copy thereof by registered or certified mail (or any

substantially similar form of mail), postage prepaid, to each party hereto at its address set forth in Section 12.04 of the Basic Agreement, or at such other address of which the other parties shall have been notified pursuant thereto; and (iv) agrees that nothing herein shall affect the right to effect service of process in any other manner permitted by law or shall limit the right to sue in any other jurisdiction.

[Remainder of Page Intentionally Blank; Signature Pages Follow ]

IN WITNESS WHEREOF, the parties have caused this Trust Supplement to be duly executed by their respective officers thereto duly authorized as of the date first written above.

[ Signature Page to Trust Supplement 2014-1A ]

[ Signature Page to Trust Supplement 2014-1A ]

EXHIBIT A to

TRUST SUPPLEMENT NO. 2014-1A

FORM OF CERTIFICATE

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“ DTC ”), TO THE TRUSTEE OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] ¹

BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF A PLAN OR ANY TRUST ESTABLISHED WITH RESPECT TO A PLAN HAVE BEEN USED TO ACQUIRE THIS CERTIFICATE OR AN INTEREST HEREIN OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE OR INTEREST HEREIN BY SUCH A PERSON ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE OR SUBSTANTIALLY SIMILAR PROVISIONS OF FOREIGN, FEDERAL, STATE OR LOCAL LAW PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS. CERTAIN TERMS USED IN THIS PARAGRAPH SHALL HAVE THE MEANINGS SPECIFIED IN THE AGREEMENT.

[GLOBAL CERTIFICATE] ¹

AMERICAN AIRLINES PASS THROUGH TRUST 2014-1A

AMERICAN AIRLINES PASS THROUGH CERTIFICATE, SERIES 2014-1A

Final Expected Regular Distribution Date: October 1, 2026

evidencing a fractional undivided interest in the Trust,

the property of which includes or will include, among

other things, certain Equipment Notes each secured by

an Aircraft owned by American Airlines, Inc.

THIS CERTIFIES THAT                 , for value received, is the registered owner of a $                  (                dollars) Fractional Undivided Interest (or such lesser amounts as shall be the aggregate outstanding face amount hereof as set forth in the records of the Trustee) in the American Airlines Pass Through Trust, Series 2014-1A (the “ Trust ”) created by Wilmington Trust Company, as trustee (together with any successor in interest and any successor or other trustee appointed pursuant to the Trust Supplement referred to below, the “ Trustee ”) under a Pass Through Trust Agreement, dated as of September 16, 2014 (the “ Basic Agreement ”), between Wilmington Trust Company, a Delaware trust company and American Airlines, Inc., a Delaware corporation (together with any successor in interest pursuant to Section 5.02 of the Basic Agreement, the “ Company ”), as supplemented by Trust Supplement No. 2014-1A thereto, dated as of September 16, 2014 (collectively, and as may be amended from time to time, the “ Agreement ”), between the Trustee and the Company, a summary of certain of the pertinent provisions of which is set forth below. To the extent not otherwise defined herein, the capitalized terms used herein have the meanings assigned to them in the Agreement. This Certificate is one of the duly authorized Certificates designated as “American Airlines Pass Through Certificates, Series 2014-1A” (herein called the “ Certificates ”). This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement. By virtue of its acceptance hereof, the Certificateholder of this Certificate assents to and agrees to be bound by all of the provisions of the Agreement and the Intercreditor Agreement, including the subordination provisions of Section 9.09 of the Intercreditor Agreement. The Trust Property is expected to include certain Equipment Notes and includes all rights of the Trust and the Trustee, on behalf of the Trust, to receive any payments under the Intercreditor Agreement and the Class A Liquidity Facility. Each issue of the Equipment Notes will be secured by, among other things, a security interest in the Aircraft owned by the Company.

The Certificates represent Fractional Undivided Interests in the Trust and the Trust Property, and will have no rights, benefits or interest in respect of any other separate trust established pursuant to the terms of the Basic Agreement for any other series of certificates issued pursuant thereto.

Subject to and in accordance with the terms of the Agreement and the Intercreditor Agreement, from funds then available to the Trustee, there will be distributed on each April 1 and October 1 (each, a “ Regular Distribution Date ”), commencing on April 1, 2015, to the Person in whose name this Certificate is registered at the close of business on the 15th day preceding the Regular Distribution Date, an amount in respect of the Scheduled Payments on the Series A Equipment Notes due on such Regular Distribution Date, the receipt of which has been confirmed by the Trustee, equal to the product of the percentage interest in the Trust evidenced by this Certificate and an amount equal to the sum of such Scheduled Payments. Subject to and in accordance with the terms of the Agreement and the Intercreditor Agreement, in the event that Special Payments on the Series A Equipment Notes are received by the Trustee, from funds then available to the Trustee, there shall be distributed on the applicable Special Distribution Date, to the Person in whose name this Certificate is registered at the close of business on the 15th day preceding the applicable Special Distribution Date, an amount in respect of such Special Payments on the Series A Equipment Notes, the receipt of which has been confirmed by the Trustee, equal to the product of the percentage interest in the Trust evidenced by this Certificate and an amount equal to the sum of such Special Payments so received. If a Regular Distribution Date or Special Distribution Date is not a Business Day, distribution shall be made on the immediately following Business Day and no interest shall accrue during the intervening period. The Trustee shall mail notice of each Special Payment and the Special Distribution Date therefor to the Certificateholder of this Certificate.

Distributions on this Certificate will be made by the Trustee by check mailed to the Person entitled thereto, without the presentation or surrender of this Certificate or the making of any notation hereon, except that with respect to Certificates registered on the Record Date in the name of a Clearing Agency (or its nominee), such distributions shall be made by wire transfer. Except as otherwise provided in the Agreement and notwithstanding the above, the final distribution on this Certificate will be made after notice mailed by the Trustee of the pendency of such distribution and only upon presentation and surrender of this Certificate at the office or agency of the Trustee specified in such notice.

The Certificates do not represent a direct obligation of, or an obligation guaranteed by, or an interest in, the Company, the Trustee, the Subordination Agent, any Loan Trustee or any Affiliate of any thereof. The Certificates are limited in right of payment, all as more specifically set forth on the face hereof and in the Agreement. All payments or distributions made to Certificateholders under the Agreement shall be made only from the Trust Property and only to the extent that the Trustee shall have sufficient income or proceeds from the Trust Property to make such payments in accordance with the terms of the Agreement. Each Certificateholder of this Certificate, by its acceptance hereof, agrees that it will look solely to the income and proceeds from the Trust Property to the extent available for any payment or distribution to such Certificateholder pursuant to the terms of the Agreement and that it will not have any recourse to the Company, the Trustee, the Loan Trustees or any Affiliate of any thereof except as otherwise expressly provided in the Agreement, in any Note Document or in the

Intercreditor Agreement. This Certificate does not purport to summarize the Agreement and reference is made to the Agreement for information with respect to the interests, rights, benefits, obligations, proceeds and duties evidenced hereby. A copy of the Agreement may be examined during normal business hours at the principal office of the Trustee, and at such other places, if any, designated by the Trustee, by any Certificateholder upon request.

The Agreement permits, with certain exceptions therein provided, the amendment thereof, and the modification of the rights and obligations of the Company and the rights of the Certificateholders under the Agreement, at any time by the Company and the Trustee with the consent of the Certificateholders holding Certificates evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the Trust. Any such consent by the Certificateholder of this Certificate shall be conclusive and binding on such Certificateholder and upon all future Certificateholders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange hereof or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Certificateholders of any of the Certificates.

As provided in the Agreement and subject to certain limitations set forth therein, the transfer of this Certificate is registrable in the Register upon surrender of this Certificate for registration of transfer at the offices or agencies maintained by the Trustee in its capacity as Registrar, or by any successor Registrar, duly endorsed or accompanied by a written instrument of transfer in form satisfactory to the Trustee and the Registrar, duly executed by the Certificateholder hereof or such Certificateholder’s attorney duly authorized in writing, and thereupon one or more new Certificates of authorized denominations evidencing the same aggregate Fractional Undivided Interest in the Trust will be issued to the designated transferee or transferees.

The Certificates are issuable only as registered Certificates without coupons in minimum denominations of $2,000 (or such other denomination that is the lowest integral multiple of $1,000 that is, at the time of issuance, equal to at least 1,000 euros) Fractional Undivided Interest and integral multiples of $1,000 in excess thereof except that one Certificate may be issued in a different denomination. As provided in the Agreement and subject to certain limitations therein set forth, the Certificates are exchangeable for new Certificates of authorized denominations evidencing the same aggregate Fractional Undivided Interest in the Trust, as requested by the Certificateholder surrendering the same.

No service charge will be made for any such registration of transfer or exchange, but the Trustee shall require payment of a sum sufficient to cover any tax or governmental charge payable in connection therewith.

The Company, the Trustee, the Registrar and any Paying Agent shall deem and treat the Person in whose name this Certificate is registered as the owner hereof for all purposes, and none of the Company, the Trustee, the Registrar or any such agent shall be affected by any notice to the contrary.

Each Certificateholder and Person with a beneficial interest herein, by its acceptance of this Certificate or such interest, agrees to treat the Trust as a grantor trust for all U.S. federal, state and local income tax purposes.

The obligations and responsibilities created by the Agreement and the Trust created thereby shall terminate upon the distribution to Certificateholders of all amounts required to be distributed to them pursuant to the Agreement and the disposition of all property held as part of the Trust Property.

Any Person acquiring or accepting this Certificate or an interest herein will, by such acquisition or acceptance, be deemed to (a) represent and warrant to the Company, the Loan Trustees and the Trustee that either: (i) no assets of a Plan or any trust established with respect to a Plan have been used to purchase or hold this Certificate or an interest herein or (ii) the purchase and holding of this Certificate or interest herein by such Person are exempt from the prohibited transaction restrictions of ERISA and the Code or provisions of Similar Law pursuant to one or more prohibited transaction statutory or administrative exemptions; and (b) direct the Trustee to invest the assets held in the Trust pursuant to, and take all other actions contemplated by, the terms and conditions of the Basic Agreement, this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the Escrow Agreement, the NPA, and each Participation Agreement.

THIS CERTIFICATE AND THE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Unless the certificate of authentication hereon has been executed by the Trustee, by manual signature, this Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated:

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Agreement.

[FORM OF TRANSFER NOTICE]

FOR VALUE RECEIVED the undersigned registered holder hereby sell(s), assign(s) and transfer(s) unto

Insert Taxpayer Identification No.

Please print or typewrite name and address including zip code of assignee

the within Certificate and all rights thereunder, hereby irrevocably constituting and appointing                                                        attorney to transfer said Certificate on the books of the Trustee with full power of substitution in the premises.

SIGNATURE GUARANTEE:                                            

Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“ STAMP ”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended.

EXHIBIT B to

TRUST SUPPLEMENT NO. 2014-1A

DTC LETTER OF REPRESENTATIONS

Exhibit 4.3

EXECUTION VERSION

TRUST SUPPLEMENT NO. 2014-1B

Dated as of September 16, 2014

between

AMERICAN AIRLINES, INC.,

and

WILMINGTON TRUST COMPANY,

as Trustee,

to

PASS THROUGH TRUST AGREEMENT

Dated as of September 16, 2014

American Airlines Pass Through Trust 2014-1B

American Airlines Pass Through Certificates, Series 2014-1B

TABLE OF CONTENTS

TRUST SUPPLEMENT NO. 2014-1B

This TRUST SUPPLEMENT NO. 2014-1B, dated as of September 16, 2014 (as amended from time to time, the “ Trust Supplement ”), between AMERICAN AIRLINES, INC., a Delaware corporation (together with any successor in interest pursuant to Section 5.02 of the Basic Agreement, the “ Company ” or “ American ”) and WILMINGTON TRUST COMPANY, a Delaware trust company, not in its individual capacity but solely as trustee (together with any successor in interest and any successor or other trustee appointed as provided in the Basic Agreement, the “ Trustee ”) under the Pass Through Trust Agreement, dated as of September 16, 2014, between the Company and Wilmington Trust Company, a Delaware trust company (the “ Basic Agreement ”).

W I T N E S S E T H:

WHEREAS, the Basic Agreement, which is unlimited as to the aggregate face amount of Certificates that may be issued and authenticated thereunder, has heretofore been executed and delivered;

WHEREAS, the Company owns (i) the beneficial interest in owner trusts that own the two Boeing aircraft described in Schedule I-B to the NPA (each an “ Owner Trust Aircraft ” and collectively the “ Owner Trust Aircraft ”) and (ii) the three Boeing and twelve Airbus aircraft described in Schedule I-A to the NPA (each an “ Owned Aircraft ” and collectively the “ Owned Aircraft ” and, together with each Owner Trust Aircraft, each an “ Aircraft ” and, collectively, the “ Aircraft ”);

WHEREAS, pursuant to each Indenture, American will issue on a recourse basis two series of Equipment Notes secured by the related Aircraft;

WHEREAS, the Trustee shall hereby declare the creation of the Class B Trust (as defined below) for the benefit of Holders of the Class B Certificates (as defined below) to be issued in respect of such Class B Trust, and the initial Holders of the Class B Certificates, as grantors of such Class B Trust, by their respective acceptances of the Class B Certificates, shall join in the creation of the Class B Trust with the Trustee;

WHEREAS, all Certificates to be issued by the Class B Trust will evidence Fractional Undivided Interests in the Class B Trust and will have no rights, benefits or interests in respect of any other separate Trust or the property held therein;

WHEREAS, the Escrow Agent and the Underwriters have contemporaneously herewith entered into an Escrow Agreement with the Escrow Paying Agent pursuant to which the Underwriters will deliver to the Escrow Agent the proceeds from the sale of the Class B Certificates, and have irrevocably instructed the Escrow Agent to withdraw and pay funds from such proceeds upon request and proper certification by the Trustee to purchase Series B Equipment Notes pursuant to the NPA and the applicable Participation Agreements from time to time prior to the Delivery Period Termination Date;

WHEREAS, the Escrow Agent on behalf of the Class B Certificateholders has contemporaneously herewith entered into a Deposit Agreement with the Depositary under which

the Deposits referred to therein will be made and from which Deposits it will withdraw funds to allow the Trustee to purchase Series B Equipment Notes from time to time prior to the Delivery Period Termination Date;

WHEREAS, pursuant to the terms and conditions of the Basic Agreement, as supplemented by this Trust Supplement, the NPA and the Participation Agreements, the Trustee on behalf of the Class B Trust shall from time to time purchase the Series B Equipment Notes issued by the Company pursuant to the Indentures related to the Aircraft having the identical interest rate as, and final maturity dates not later than the final expected Regular Distribution Date of, the Class B Certificates issued hereunder and shall hold such Series B Equipment Notes in trust for the benefit of the Class B Certificateholders;

WHEREAS, pursuant to the terms and conditions of the Intercreditor Agreement referred to in Section 3.02(i) hereof, the Trustee and the other parties thereto will agree to the terms of subordination set forth therein;

WHEREAS, all of the conditions and requirements necessary to make this Trust Supplement, when duly executed and delivered, a valid, binding and legal instrument in accordance with its terms and for the purposes herein expressed, have been done, performed and fulfilled, and the execution and delivery of this Trust Supplement in the form and with the terms hereof have been in all respects duly authorized;

WHEREAS, the Basic Agreement, as supplemented by this Trust Supplement, is subject to the provisions of the Trust Indenture Act and shall, to the extent applicable, be governed by such provisions;

NOW, THEREFORE, in consideration of the mutual agreements herein contained, and of other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I

DEFINITIONS

Section 1.01 Definitions . Unless otherwise specified herein or the context otherwise requires, capitalized terms used but not defined herein, including in the recitals hereto, shall have the respective meanings set forth, and shall be construed and interpreted in the manner described, in the Basic Agreement. As used herein, the term “ Agreement ” shall mean the Basic Agreement, as supplemented by this Trust Supplement. For all purposes of the Basic Agreement as supplemented by this Trust Supplement, the following capitalized terms have the following meanings (any term used herein which is defined in both this Trust Supplement and the Basic Agreement shall have the meaning assigned thereto in this Trust Supplement for purposes of the Basic Agreement as supplemented by this Trust Supplement).

Accounts : Has the meaning ascribed thereto in the Deposit Agreement.

Additional Certificateholder : Has the meaning specified in the Intercreditor Agreement.

Additional Certificates : Has the meaning specified in the Intercreditor Agreement.

Additional Equipment Note : Has the meaning specified in the Intercreditor Agreement.

Additional Trust : Has the meaning specified in the Intercreditor Agreement.

Additional Trust Agreement : Has the meaning specified in the Intercreditor Agreement.

Affiliate : Has the meaning specified in the Intercreditor Agreement.

Agreement : Has the meaning specified in the first paragraph of Section 1.01 of this Trust Supplement.

Aircraft : Means the “Aircraft” specified in the recitals to this Trust Supplement and as further defined in the applicable Indenture, and any Replacement Aircraft (as defined in the applicable Indenture) in replacement thereof in accordance with the applicable Indenture.

American : Has the meaning specified in the preamble to this Trust Supplement.

Applicable Funding Date : Has the meaning specified in Section 7.01(b) of this Trust Supplement.

Applicable Notice of Purchase Withdrawal : Has the meaning specified in the Escrow Agreement.

Applicable Participation Agreement : Has the meaning specified in Section 7.01(b) of this Trust Supplement.

Basic Agreement : Has the meaning specified in the preamble to this Trust Supplement.

Business Day : Has the meaning specified in the Intercreditor Agreement.

Certificate : Means a Class A Certificate or a Class B Certificate, as applicable.

Certificate Buy-Out Event : Has the meaning specified in the Intercreditor Agreement.

Certificateholder : Means, with respect to any Class of Certificates, the Person in whose name a Certificate is registered in the Register for the Certificates of such Class.

Class : Has the meaning specified in the Intercreditor Agreement.

Class A Certificateholder : Has the meaning specified in the Intercreditor Agreement.

Class A Certificates : Has the meaning specified in the Intercreditor Agreement.

Class A Trust : Has the meaning specified in the Intercreditor Agreement.

Class A Trust Agreement : Has the meaning specified in the Intercreditor Agreement.

Class A Trustee : Has the meaning specified in the Intercreditor Agreement.

Class B Certificateholder : Means, at any time, any Certificateholder of one or more Class B Certificates.

Class B Certificates : Has the meaning specified in Section 3.01 of this Trust Supplement.

Class B Liquidity Facility : Has the meaning specified in the Intercreditor Agreement.

Class B Liquidity Provider : Has the meaning specified in the Intercreditor Agreement.

Class B Trust : Has the meaning specified in Section 2.01 of this Trust Supplement.

Code : Means the Internal Revenue Code of 1986 , as amended.

Company : Has the meaning specified in the preamble to this Trust Supplement.

Corporate Trust Office : Has the meaning specified in the Intercreditor Agreement.

Cut-off Date : Has the meaning specified in Section 3.02(b) of this Trust Supplement.

Definitive Certificates : Has the meaning specified in Section 4.01(e) of this Trust Supplement.

Delivery Period Termination Date : Has the meaning specified in the NPA.

Deposit Agreement : Means, subject to Section 5 of the NPA, the Deposit Agreement (Class B), dated as of the date hereof, relating to the Class B Certificates between the Depositary and the Escrow Agent, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

Depositary : Means, subject to Section 5 of the NPA, Crédit Agricole Corporate and Investment Bank, acting through its New York Branch.

Deposits : Has the meaning specified in the Deposit Agreement.

Distribution Date : Means a Regular Distribution Date or a Special Distribution Date.

DTC : Has the meaning specified in Section 3.02(f) of this Trust Supplement.

DTC Participants : Has the meaning specified in Section 4.01(b) of this Trust Supplement.

Equipment Notes : Has the meaning specified in the Intercreditor Agreement.

ERISA : Means the Employee Retirement Income Security Act of 1974, as amended.

Escrow Agent : Means, initially, Wilmington Trust, National Association, a national banking association, and any replacement or successor therefor appointed in accordance with the Escrow Agreement.

Escrow Agreement : Means the Escrow and Paying Agent Agreement (Class B), dated as of the date hereof, relating to the Class B Certificates, among the Escrow Agent, the Escrow Paying Agent, the Trustee and the Underwriters, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

Escrow Paying Agent : Means the “Paying Agent” as defined in the Escrow Agreement.

Escrow Period Termination Date : Has the meaning specified in Section 5.01(c)(i) of this Trust Supplement.

Escrow Receipt : Means a receipt substantially in the form annexed to the Escrow Agreement representing a fractional undivided interest in the funds held in escrow thereunder.

Event of Default : With respect to any Indenture, has the meaning specified in Section 4.01 of such Indenture.

Event of Loss Withdrawal : Has the meaning specified in the Escrow Agreement.

Final Withdrawal : Has the meaning specified in the Escrow Agreement.

Final Withdrawal Date : Has the meaning specified in the Escrow Agreement.

Fractional Undivided Interests : Has the meaning specified in the Intercreditor Agreement.

Funding Date : Has the meaning specified in the NPA.

Funding Notice : Has the meaning specified in the NPA.

Global Certificate : Has the meaning specified in Section 4.01(b) of this Trust Supplement.

Holder : Means a Certificateholder.

Indenture : Has the meaning specified in the Intercreditor Agreement.

Indirect Participants : Has the meaning specified in Section 4.01(b) of this Trust Supplement.

Intercreditor Agreement : Has the meaning specified in Section 3.02(i) of this Trust Supplement.

Issuance Date : Has the meaning specified in Section 7.01(a) of this Trust Supplement.

Liquidity Provider : Has the meaning specified in the Intercreditor Agreement.

Loan Trustee : Means, with respect to any Indenture, the bank, trust company or other financial institution designated as loan trustee thereunder, and any successor to such loan trustee.

Note Documents : Means, collectively, the Participation Agreements, the Indentures, each Indenture Supplement (as defined in any Indenture), each Manufacturer’s Consent (as defined in any Indenture) and the Equipment Notes.

Notice of Purchase Withdrawal : Has the meaning specified in the Deposit Agreement.

NPA : Means the Note Purchase Agreement, dated as of the date hereof, among the Trustee, the Class A Trustee, the Company, the Escrow Agent, the Escrow Paying Agent and the Subordination Agent, providing for, among other things, the purchase of Series B Equipment Notes by the Trustee on behalf of the Class B Trust, as the same may be amended, supplemented or otherwise modified from time to time, in accordance with its terms.

Officer’s Certificate : Means a certificate signed, (a) in the case of the Company or the Parent, by the Chairman or Vice Chairman of the Board of Directors, the President, any Executive Vice President, any Senior Vice President, any Vice President, Treasurer or Assistant Treasurer of the Company or the Parent, as the case may be, or (b) in the case of the Trustee or the Loan Trustee, a Responsible Officer of the Trustee or such Loan Trustee, as the case may be.

Operative Agreements : Has the meaning specified in the Intercreditor Agreement.

Other Agreements : Means (i) the Class B Trust Agreement, (ii) the Basic Agreement as supplemented by a Trust Supplement (as defined in the Basic Agreement) relating to any Additional Trust and (iii) the Basic Agreement as supplemented by a Trust Supplement (as defined in the Basic Agreement) relating to any Refinancing Trust.

Other Trustees : Means the trustees under the Other Agreements, and any successor or other trustee appointed as provided therein.

Other Trusts : Means the Class B Trust, any Additional Trust, or any Refinancing Trust or Trusts, in each case created by the applicable Other Agreement.

Owned Aircraft : Has the meaning specified in the preamble to this Trust Supplement.

Owner Trust Aircraft : Has the meaning specified in the preamble to this Trust Supplement.

Parent : Means American Airlines Group Inc., a Delaware corporation and parent of American (together with its successors and assigns).

Participation Agreement : Has the meaning specified in the Intercreditor Agreement.

Paying Agent : Means, with respect to the Class B Certificates, the paying agent maintained and appointed for such Class B Certificates pursuant to Section 7.12 of the Basic Agreement.

Person : Means any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, trustee, unincorporated organization or government or any agency or political subdivision thereof.

Plan : Means a retirement plan or other employee benefit plan or arrangement, including for this purpose an individual retirement account, annuity or Keogh plan, that is subject to Title I of ERISA or Section 4975 of the Code, or such a plan or arrangement which is a foreign, church or governmental plan or arrangement exempt from Title I of ERISA and Section 4975 of the Code but subject to a Similar Law.

Pool Balance : Means, as of any date, (i) the original aggregate face amount of the Class B Certificates less (ii) the aggregate amount of all distributions made as of such date in respect of the Class B Certificates or in respect of Deposits other than distributions made in respect of interest or Premium or reimbursement of any costs or expenses incurred in connection therewith. The Pool Balance as of any date shall be computed after giving effect to any distribution with respect to unused Deposits, the payment of principal, if any, of the Series B Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on such date.

Pool Factor : Means, as of any Distribution Date, the quotient (rounded to the seventh decimal place) computed by dividing (i) the Pool Balance by (ii) the original aggregate face amount of the Class B Certificates. The Pool Factor as of any Distribution Date shall be computed after giving effect to any distribution with respect to unused Deposits, payment of principal, if any, of the Series B Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on that date.

Premium : Has the meaning specified in the Intercreditor Agreement.

Prospectus Supplement : Means the final Prospectus Supplement, dated September 2, 2014, relating to the offering of the Certificates.

Rating Agencies : Has the meaning specified in the Intercreditor Agreement.

Refinancing Certificateholders : Has the meaning specified in the Intercreditor Agreement.

Refinancing Certificates : Has the meaning specified in the Intercreditor Agreement.

Refinancing Equipment Notes : Has the meaning specified in the Intercreditor Agreement.

Refinancing Trust : Has the meaning specified in the Intercreditor Agreement.

Refinancing Trust Agreement : Has the meaning specified in the Intercreditor Agreement.

Register : Has the meaning specified in the Intercreditor Agreement.

Regular Distribution Date : Has the meaning specified in Section 3.02(c) of this Trust Supplement.

Replacement Depositary : Has the meaning specified in the NPA.

Replacement Depositary Agreement : Has the meaning specified in the NPA.

Replacement Liquidity Facility : Has the meaning specified in the Intercreditor Agreement.

Replacement Liquidity Provider : Has the meaning specified in the Intercreditor Agreement.

Responsible Officer : Has the meaning specified in the Intercreditor Agreement.

Scheduled Payment : Has the meaning specified in the Intercreditor Agreement.

Securities Act : Means the Securities Act of 1933, as amended.

Series B Equipment Notes : Has the meaning specified in the Intercreditor Agreement.

Similar Law : Means a foreign, federal, state, or local law which is substantially similar to the prohibited transaction provisions of Title I of ERISA or Section 4975 of the Code.

Special Distribution Date : Means, with respect to the Class B Certificates, each date on which a Special Payment is to be distributed as specified in this Agreement.

Special Payment : Means any payment (other than a Scheduled Payment) in respect of, or any proceeds of, any Equipment Note or the Collateral (as defined in any Indenture).

Special Payments Account : Means, with respect to the Class B Certificates, the account or accounts created and maintained for such series pursuant to Section 4.01(b) of the Basic Agreement (as modified by Section 7.01(c) of this Trust Supplement) and this Trust Supplement.

Subordination Agent : Has the meaning specified in the Intercreditor Agreement.

Triggering Event : Has the meaning specified in the Intercreditor Agreement.

Trust : Means the Class A Trust or the Class B Trust, as applicable.

Trustee : Has the meaning specified in the preamble to this Trust Supplement.

Trust Indenture Act : Means the Trust Indenture Act of 1939, as amended.

Trust Property : Means (i) subject to the Intercreditor Agreement, the Series B Equipment Notes held as the property of the Class B Trust, all monies at any time paid thereon and all monies due and to become due thereunder, (ii) funds from time to time deposited in the Certificate Account and the Special Payments Account and, subject to the Intercreditor Agreement, any proceeds from the sale by the Trustee pursuant to Article VI of the Basic Agreement of any Equipment Notes and (iii) all rights of the Class B Trust and the Trustee, on behalf of the Class B Trust, under the Intercreditor Agreement, the Escrow Agreement, the NPA and the Class B Liquidity Facility, including, without limitation, all rights to receive certain payments thereunder, and all monies paid to the Trustee on behalf of the Class B Trust pursuant to the Intercreditor Agreement or the Class B Liquidity Facility, provided , that rights with respect to the Deposits or under the Escrow Agreement, except for the right to direct withdrawals for the purchase of Series B Equipment Notes to be held herein, will not constitute Trust Property.

Trust Supplement : Has the meaning specified in the preamble hereto.

Underwriters : Means Goldman, Sachs & Co., Credit Suisse Securities (USA) LLC, Deutsche Bank Securities Inc., Morgan Stanley & Co. LLC, Citigroup Global Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Barclays Capital Inc., BNP Paribas Securities Corp., Credit Agricole Securities (USA) Inc. and J.P. Morgan Securities LLC.

Underwriting Agreement : Means the Underwriting Agreement, dated September 2, 2014, among the Company, the Depositary and the Underwriters as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

Withdrawal Certificate : Has the meaning specified in the Escrow Agreement.

ARTICLE II

DECLARATION OF TRUST

Section 2.01 Declaration of Trust . The Trustee hereby declares the creation of a Trust, designated the “American Airlines Pass Through Trust 2014-1B” (the “ Class B Trust ”), for the benefit of the Holders of the Class B Certificates to be issued in respect of such Class B Trust, and the initial Holders of the Class B Certificates, as grantors of such Class B Trust, by their respective acceptances of the Class B Certificates, join in the creation of such Class B Trust with the Trustee. The Trustee, by the execution and delivery of this Trust Supplement, acknowledges its acceptance of all right, title and interest in and to the Trust Property to be acquired pursuant to Section 7.01(b) of this Trust Supplement, the NPA and the Participation Agreements and the Trustee will hold such right, title and interest for the benefit of all present and future Holders of the Class B Certificates, upon the trusts set forth in the Basic Agreement and this Trust Supplement. The provisions of this Section 2.01 supersede and replace the provisions of Sections 2.03 of the Basic Agreement, with respect to the Class B Trust.

Section 2.02 Permitted Activities . The Class B Trust may only engage in the transactions contemplated by the Operative Agreements, subject to Section 9.05 of this Trust Supplement.

ARTICLE III

THE CERTIFICATES

Section 3.01 The Certificates . There is hereby created a series of Certificates to be issued under this Agreement designated as “American Airlines Pass Through Certificates, Series 2014-1B” (the “ Class B Certificates ”). Each Class B Certificate represents a Fractional Undivided Interest in the Class B Trust created hereby. The Class B Certificates shall be the only instruments evidencing a Fractional Undivided Interest in the Class B Trust. The Class B Certificates do not represent indebtedness of the Class B Trust, and references herein to interest accruing on the Class B Certificates are included for purposes of computation only.

Section 3.02 Terms and Conditions . The terms and conditions applicable to the Class B Certificates and the Class B Trust are as follows:

(a) The aggregate face amount of the Class B Certificates that may be authenticated and delivered under this Agreement (except for Class B Certificates authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Class B Certificates pursuant to Sections 3.03, 3.04, 3.05 and 3.06 of the Basic Agreement and Section 4.03 of this Trust Supplement) is $215,424,000.

(b) The Cut-off Date (the “ Cut-off Date ”) is the earlier of (i) the day after the Delivery Period Termination Date, and (ii) the date on which a Triggering Event occurs.

(c) The distribution dates with respect to any payment of Scheduled Payments (each such distribution date, a “ Regular Distribution Date ”) shall be each April 1 and each October 1, commencing on April 1, 2015, until payment of all of the Scheduled Payments to be made under the Equipment Notes has been made; provided , however , that, if any such day shall not be a Business Day, the related distribution shall be made on the next succeeding Business Day without additional interest.

(d) The Special Distribution Date with respect to the Class B Certificates means any Business Day on which a Special Payment is to be distributed pursuant to this Agreement.

(e) At the Escrow Agent’s request under the Escrow Agreement, the Trustee shall affix the corresponding Escrow Receipt to each Class B Certificate. In any event, any transfer or exchange of any Class B Certificate shall also effect a transfer or exchange of the related Escrow Receipt. Prior to the Final Withdrawal Date, no transfer or exchange of any Class B Certificate shall be permitted unless the corresponding Escrow Receipt is attached thereto and also is so transferred or exchanged. By acceptance of any Class B Certificate to which an Escrow Receipt is attached, each holder of such a Class B Certificate acknowledges and accepts the restrictions on transfer of the Escrow Receipt as set forth herein, in such Escrow Receipt, and in the Escrow Agreement.

(f) The Class B Certificates shall be in the form attached hereto as Exhibit A, shall be Book-Entry Certificates (subject to Section 3.05(d) of the Basic Agreement and Section 4.03 of this Trust Supplement), and shall be subject to the conditions set forth in the Letter of Representations between the Class B Trust and The Depository Trust Company and any successor agency thereto (“ DTC ”), as initial Clearing Agency, attached hereto as Exhibit B.

(g) The proceeds of the offering of Class B Certificates issued by the Class B Trust and related Escrow Receipts shall be deposited in the Accounts and shall be used in accordance with the Escrow Agreement, the Deposit Agreement and the NPA to acquire from time to time the Series B Equipment Notes described in Schedule III to the NPA that relate to the Aircraft and to the Note Documents described in Schedule III to the NPA.

(h) Any Person acquiring or accepting a Class B Certificate or an interest therein will, by such acquisition or acceptance, be deemed to (i) represent and warrant to the Company, the Loan Trustees and the Trustee that either (A) no assets of a Plan or any trust established with respect to a Plan have been used to purchase or hold Class B Certificates or an interest therein or (B) the purchase and holding of Class B Certificates or interests therein by such Person is exempt from the prohibited transaction restrictions of ERISA and the Code or provisions of Similar Law pursuant to one or more prohibited transaction statutory or administrative exemptions, and (ii) direct the Trustee to invest the assets held in the Trust pursuant to, and take all other actions contemplated by, the terms and conditions of the Basic Agreement, this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the Escrow Agreement, the NPA, and each Participation Agreement.

(i) The Class B Certificates will be subject to the following Intercreditor Agreement (and to the extent the terms thereof (including the definitions of defined terms) are inconsistent with the terms of this Agreement, such Intercreditor Agreement shall control): that certain Intercreditor Agreement, dated as of the date hereof, among Wilmington Trust Company, as Trustee and Class A Trustee, Crédit Agricole Corporate and Investment Bank, acting through its New York Branch, as each Liquidity Provider, and Wilmington Trust Company, as Subordination Agent thereunder (as may be amended, supplemented or otherwise modified from time to time in accordance with its terms, the “ Intercreditor Agreement ”). Upon the occurrence of a Certificate Buy-Out Event, the holders of the Class B Certificates and Additional Certificates (if any) shall have the rights set forth in Article VI hereof. The Trustee and, by acceptance of any Class B Certificate, each Certificateholder thereof, agrees to be bound by all of the provisions of the Intercreditor Agreement, including the subordination provisions of Section 9.09 thereof.

(j) The Class B Certificates have the benefit of the Deposit Agreement and the Escrow Agreement.

(k) The Class B Certificates will have the benefit of the following liquidity facility: that certain Revolving Credit Agreement (2014-1B), dated as of the date hereof, between Wilmington Trust Company, as Subordination Agent under the Intercreditor Agreement, as agent and trustee for the Class B Trust, and the Class B Liquidity Provider.

(l) The Responsible Party is the Company.

(m) The Parent will not initially guarantee the obligations of the Company under any Series B Equipment Notes to be acquired by the Class B Trust.

(n) The Company, the Parent, any other obligor upon the Class B Certificates, and any Affiliate of any thereof may acquire, tender for, purchase, own, hold, become the pledgee of and otherwise deal with any Class B Certificate.

ARTICLE IV

ISSUANCE AND TRANSFER OF THE CLASS B CERTIFICATES

Section 4.01 Issuance of Class B Certificates . (a) The Class B Certificates will be issued in minimum denominations of $2,000 (or such other denomination that is the lowest integral multiple of $1,000 that is, at the time of issuance, equal to at least 1,000 euros) and integral multiples of $1,000 in excess thereof, except that one Certificate may be issued in a different denomination. Each Class B Certificate shall be dated the date of its authentication.

(b) The Class B Certificates shall be issued initially in the form of one or more global Certificates in definitive, fully registered form without interest coupons, substantially in the form of Exhibit A hereto (each, a “ Global Certificate ”), duly executed and authenticated by the Trustee as hereinafter provided. Each Global Certificate will be registered in the name of a nominee for DTC for credit to the account of members of, or participants in, DTC (“ DTC Participants ”) or to the account of indirect participants that clear through or maintain a custodial relationship with a DTC Participant, either directly or indirectly (“ Indirect Participants ”), and

will be deposited with the Trustee, at its Corporate Trust Office, as custodian for DTC. The aggregate principal amount of a Global Certificate may from time to time be increased or decreased by adjustments made on the records of DTC or its nominee, or of the Trustee, as custodian for DTC or its nominee for such Global Certificate which adjustments shall be conclusive as to the aggregate principal amount of any such Global Certificate.

(c) [Reserved]

(d) [Reserved]

(e) Certificated Certificates in registered form shall be issued in substantially the form set forth as Exhibit A hereto (the “ Definitive Certificates ”) and shall be in fully registered form and shall be typed, printed, lithographed or engraved or produced by any combination of these methods or may be produced in any other manner, all as determined by the officers executing such Definitive Certificates, as evidenced by their execution of such Definitive Certificates.

Section 4.02 Legends . (a) Each Global Certificate shall bear the following legend on the face thereof:

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“ DTC ”), TO THE TRUSTEE OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

(b) Each Class B Certificate shall bear the following legend on the face thereof:

BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF A PLAN OR ANY TRUST ESTABLISHED WITH RESPECT TO A PLAN HAVE BEEN USED TO ACQUIRE THIS CERTIFICATE OR AN INTEREST HEREIN OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE OR INTEREST HEREIN BY SUCH A PERSON ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE OR SUBSTANTIALLY SIMILAR PROVISIONS OF FOREIGN, FEDERAL, STATE OR LOCAL LAW PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS. CERTAIN TERMS USED IN THIS PARAGRAPH SHALL HAVE THE MEANINGS SPECIFIED IN THE AGREEMENT.

Section 4.03 Book-Entry Provisions for Global Certificates . (a) DTC Participants shall have no rights under this Agreement with respect to any Global Certificate held on their behalf by DTC, or the Trustee as its custodian, and DTC may be treated by the Trustee and any agent of the Trustee as the absolute owner of such Global Certificate for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Trustee or any agent of the Trustee from giving effect to any written certification, proxy or other authorization furnished by DTC or shall impair, as between DTC and its DTC Participants, the operation of customary practices governing the exercise of the rights of a holder of any Class B Certificate. Upon the issuance of any Global Certificate, the Registrar or its duly appointed agent shall record Cede & Co. or another nominee of DTC as the registered holder of such Global Certificate.

(b) Transfers of any Global Certificate shall be limited to transfers of such Global Certificate in whole, but not in part, to nominees of DTC, DTC’s successor or such successor’s nominees. Beneficial interests in Global Certificates may be transferred in accordance with the rules and procedures of DTC and the provisions of Section 4.02 of this Trust Supplement. Definitive Certificates shall be delivered to all beneficial owners of beneficial interests in Global Certificates, if (i) DTC notifies the Trustee in writing that it is no longer willing or able to discharge properly its responsibilities as depositary for the Global Certificates, and a successor depositary is not appointed by the Trustee within 90 days of such notice, (ii) the Company, at its option, advises the Trustee in writing that it elects to terminate the book-entry system through DTC or (iii) after the occurrence and during the continuance of an Event of Default, Class B Certificateholders with Fractional Undivided Interests aggregating not less than a majority in interest in the Class B Trust advise the Trustee, the Company and DTC through DTC Participants in writing that the continuation of a book-entry system through DTC (or a successor thereto) is no longer in the Class B Certificateholders’ best interests. Neither the Company nor the Trustee shall be liable if the Company or the Trustee is unable to locate a qualified successor clearing system.

(c) [Reserved]

(d) In connection with the transfer of the entire amount of a Global Certificate to the beneficial owners thereof pursuant to paragraph (b) of this Section 4.03 , such Global Certificate shall be deemed to be surrendered to the Trustee for cancellation, and the Trustee shall execute, authenticate and deliver to each beneficial owner, in exchange for the beneficial interest thereof in such Global Certificate, an equal aggregate principal amount of Definitive Certificates of authorized denominations, in each case as such beneficial owner and related aggregate principal amount shall have been identified and otherwise set forth (together with such other information as may be required for the registration of such Definitive Certificates) in registration instructions that shall have been delivered by or on behalf of DTC to the Trustee. None of the Company, the Registrar, the Paying Agent nor the Trustee shall be liable for any delay in delivery of such registration instructions and each such Person may conclusively rely on, and shall be protected in relying on, such registration instructions. Upon the issuance of any Definitive Certificate, the Trustee shall recognize the Person in whose name such Definitive Certificate is registered in the Register as a Certificateholder hereunder.

(e) The registered Holder of a Global Certificate may grant proxies and otherwise authorize any Person, including DTC Participants and Persons that may hold interests through DTC Participants, to take any action which a Holder is entitled to take under this Agreement or the Class B Certificates.

(f) Neither the Company, nor the Trustee, nor the Registrar, nor the Paying Agent shall have any responsibility or liability for: (i) any aspect of the records relating to or payments made on account of beneficial ownership interests in the Global Certificates, (ii) maintaining, supervising or reviewing any records relating to such beneficial ownership interests or (iii) the performance by DTC, any DTC Participant or any Indirect Participant of their respective obligations under the rules, regulations and procedures creating and affecting DTC and its operation or any other statutory, regulatory, contractual or customary procedures governing their obligations.

ARTICLE V

DISTRIBUTION; STATEMENTS TO CERTIFICATEHOLDERS

Section 5.01 Statements to Certificateholders . (a) On each Regular Distribution Date and Special Distribution Date, the Trustee will include with each distribution to the Class B Certificateholders a statement, giving effect to the distribution to be made on such Regular Distribution Date or Special Distribution Date, setting forth the following information (per $1,000 aggregate face amount of Class B Certificates as to clauses (ii) , (iii) , (iv)  and (v)  below):

(i) the aggregate amount of funds distributed on such Distribution Date under this Agreement and the Escrow Agreement, indicating the amount, if any, allocable to each source (including any portion thereof paid by the Class B Liquidity Provider);

(ii) the amount of such distribution under this Agreement allocable to principal and the amount allocable to Premium (if any);

(iii) the amount of such distribution under this Agreement allocable to interest (including any portion thereof paid by the Class B Liquidity Provider);

(iv) the amount of such distribution under the Escrow Agreement allocable to interest, if any;

(v) the amount of such distribution under the Escrow Agreement allocable to unused Deposits, if any; and

(vi) the Pool Balance and the Pool Factor.

With respect to the Class B Certificates registered in the name of DTC or its nominee, on the Record Date prior to each Regular Distribution Date and Special Distribution Date, the Trustee will request that DTC post on its Internet bulletin board a securities position

listing setting forth the names of all the DTC Participants reflected on DTC’s books as holding interests in the Class B Certificates on such Record Date. On each Regular Distribution Date and Special Distribution Date, the Trustee will mail to each such DTC Participant whose name has been provided by DTC the statement described above and will make available additional copies as requested by such DTC Participants for forwarding to holders of interests in the Class B Certificates.

(b) Within a reasonable period of time after the end of each calendar year but not later than the latest date permitted by law, the Trustee shall furnish to each Person who at any time during such calendar year was a Class B Certificateholder of record a statement containing the sum of the amounts determined pursuant to clauses (a)(i) , (a)(ii) , (a)(iii) , (a)(iv) and (a)(v) above for such calendar year or, in the event such Person was a Class B Certificateholder of record during a portion of such calendar year, for the applicable portion of such year, and such other items as are readily available to the Trustee and which a Class B Certificateholder may reasonably request as necessary for the purpose of such Certificateholder’s preparation of its United States federal income tax returns or foreign income tax returns. With respect to Class B Certificates registered in the name of DTC or its nominee, such statement and such other items shall be prepared on the basis of information supplied to the Trustee by the DTC Participants and shall be delivered by the Trustee to such DTC Participants to be available for forwarding by such DTC Participants to the holders of interests in the Class B Certificates.

(c) Promptly following:

(i) the Delivery Period Termination Date, or, if later, the date of any Final Withdrawal (the later of such dates, the “ Escrow Period Termination Date ”), if there has been, on or prior to the Escrow Period Termination Date, (A) any change in the information set forth in clauses (y)  and (z)  below from that set forth in page S-57 of the Prospectus Supplement, or (B) any early redemption or purchase of, or any default in the payment of principal or interest in respect of, any of the Series B Equipment Notes held in the Class B Trust, any Event of Loss Withdrawal or any Final Withdrawal, and

(ii) the date of any early redemption or purchase of, or any default in the payment of principal or interest in respect of, any of the Series B Equipment Notes held in the Class B Trust, in either case described in this clause (ii) , occurring after the Escrow Period Termination Date,

the Trustee shall furnish to Class B Certificateholders of record on such date a statement setting forth (x) the expected Pool Balances for each subsequent Regular Distribution Date following the Delivery Period Termination Date, (y) the related Pool Factors for such Regular Distribution Dates and (z) the expected principal distribution schedule of the Series B Equipment Notes, in the aggregate, held as Trust Property at the date of such notice. With respect to the Class B Certificates registered in the name of DTC, on the Delivery Period Termination Date, the Trustee will request from DTC a securities position listing setting forth the names of all DTC Participants reflected on DTC’s books as holding interests in the Class B Certificates on such date. The Trustee will mail to each such DTC Participant the statement described above and will make available additional copies as requested by such DTC Participant for forwarding to holders of interests in the Class B Certificates.

(d) If the aggregate principal payments scheduled for a Regular Distribution Date prior to the Delivery Period Termination Date differ from the amount thereof set forth for the Class B Certificates on page S-57 of the Prospectus Supplement, by no later than the 15th day prior to such Regular Distribution Date, the Trustee shall mail written notice of the actual amount of such scheduled payments to the Class B Certificateholders of record as of a date within 15 Business Days prior to the date of mailing.

(e) The provisions of this Section 5.01 supersede and replace the provisions of Section 4.03 of the Basic Agreement in their entirety with respect to the Class B Trust.

ARTICLE VI

DEFAULT

Section 6.01 Purchase Rights of Certificateholders . (a) At any time after the occurrence and during the continuation of a Certificate Buy-Out Event, so long as no Additional Certificateholder has elected to exercise its rights to purchase Certificates pursuant to, and given notice of such election in accordance with, this Section 6.01 (upon such election and notification thereof, the right specified in this Section 6.01(a) shall be suspended and (x) upon consummation of the purchase pursuant to such election, be terminated with respect to such Certificate Buy-Out Event, or (y) upon failure to consummate such purchase on the proposed purchase date, such right shall be revived), each Class B Certificateholder (other than the Company or any of its Affiliates) shall have the right to purchase, for the purchase price set forth in the Class A Trust Agreement, all, but not less than all, of the Class A Certificates upon ten days’ prior written irrevocable notice to the Trustee, the Class A Trustee and each other Certificateholder, on the third Business Day following the expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period any other Class B Certificateholder(s) (other than the Company or any of its Affiliates) notifies such purchasing Class B Certificateholder that such other Class B Certificateholder(s) want(s) to participate in such purchase, then such other Class B Certificateholder(s) (other than the Company or any of its Affiliates) may join with the purchasing Class B Certificateholder to purchase all, but not less than all, of the Class A Certificates pro rata based on the Fractional Undivided Interest in the Class B Trust held by each such Class B Certificateholder and (B) upon consummation of such purchase no Class B Certificateholder shall have a right to purchase the Class A Certificates pursuant to this Section 6.01(a) during the continuance of such Certificate Buy-Out Event;

(b) By acceptance of its Class B Certificate, each Class B Certificateholder agrees that at any time after the occurrence and during the continuation of a Certificate Buy-Out Event:

(i) if any Additional Certificates are issued by an Additional Trust, each Additional Certificateholder (other than the Company or any of its Affiliates) shall have the right (which shall not expire upon any purchase of the Class A Certificates pursuant to clause (a)  above) to purchase all, but not less than all, of the Class A Certificates and the Class B Certificates upon ten days’ prior written irrevocable notice to the Trustee, the Class A Trustee and each other Additional Certificateholder, on the third Business Day following the expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period any other Additional Certificateholder(s) (other than the

Company or any of its Affiliates) notifies such purchasing Additional Certificateholder that such other Additional Certificateholder(s) want(s) to participate in such purchase, then such other Additional Certificateholder(s) (other than the Company or any of its Affiliates) may join with the purchasing Additional Certificateholder to purchase all, but not less than all, of the Class A Certificates and the Class B Certificates pro rata based on the Fractional Undivided Interest in the Additional Trust held by each such Additional Certificateholder and (B) upon consummation of such purchase no Additional Certificateholder shall have a right to purchase the Class A Certificates and the Class B Certificates pursuant to this Section 6.01(b) during the continuance of such Certificate Buy-Out Event; and

(ii) if any Refinancing Certificates are issued, each Refinancing Certificateholder shall have the same right (subject to the same terms and conditions) to purchase Certificates pursuant to this Section 6.01 (and to receive notice in connection therewith) as the Certificateholders of the Class that such Refinancing Certificates refinanced.

The purchase price with respect to the Class B Certificates shall be equal to the Pool Balance of the Class B Certificates, together with accrued and unpaid interest in respect thereof to the date of such purchase, and any other amounts then due and payable to the Class B Certificateholders under this Agreement, the Intercreditor Agreement, the Escrow Agreement, any Series B Equipment Note held as the property of the Class B Trust or the related Indenture and Participation Agreement or on or in respect of the Class B Certificates but without any Premium, provided , however , that if such purchase occurs after (x) a record date specified in Section 2.03 of the Escrow Agreement relating to the distribution of unused Deposits and/or accrued and unpaid interest on Deposits and prior to or on the related distribution date under the Escrow Agreement, such purchase price shall be reduced by the aggregate amount of unused Deposits and/or interest to be distributed under the Escrow Agreement (which deducted amounts shall remain distributable to, and may be retained by, the Class B Certificateholders as of such record date) or (y) the Record Date relating to any Distribution Date, such purchase price shall be reduced by the amount to be distributed hereunder on such related Distribution Date (which deducted amounts shall remain distributable to, and may be retained by, the Class B Certificateholders as of such Record Date); provided , further , that no such purchase of Class B Certificates pursuant to this Section 6.01(b) shall be effective unless the purchaser(s) shall certify to the Trustee that contemporaneously with such purchase, such purchaser(s) is purchasing, pursuant to the terms of this Agreement, the Class A Trust Agreement, the Additional Trust Agreement (if any) or the applicable Refinancing Trust Agreement (as the case may be), and the Intercreditor Agreement, all of the Class A Certificates, the Class B Certificates and, if applicable, the Refinancing Certificates that are senior to the securities held by such purchaser(s). Each payment of the purchase price of the Class B Certificates referred to in the first sentence of this paragraph shall be made to an account or accounts designated by the Trustee and each such purchase shall be subject to the terms of this Section 6.01(b) . Each Class B Certificateholder agrees by its acceptance of its Class B Certificate that it will, upon payment from such Additional Certificateholder(s) or Refinancing Certificateholder(s), as the case may be, of the purchase price set forth in the first sentence of this paragraph, forthwith sell, assign, transfer and convey to the purchaser(s) thereof (without recourse, representation or warranty of any kind except as to its own acts) all of the right, title, interest and obligation of such Class B

Certificateholder in this Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement, the Class B Liquidity Facility, the NPA, the Note Documents and all Class B Certificates and Escrow Receipts held by such Class B Certificateholder (excluding all right, title and interest under any of the foregoing to the extent such right, title or interest is with respect to an obligation not then due and payable as respects any action or inaction or state of affairs occurring prior to such sale) and the purchaser(s) shall assume all of such Class B Certificateholder’s obligations under this Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement, the Class B Liquidity Facility, the NPA, the Note Documents and all such Class B Certificates and Escrow Receipts. The Class B Certificates will be deemed to be purchased on the date payment of the purchase price is made notwithstanding the failure of any Class B Certificateholder to deliver any Class B Certificate and, upon such a purchase, (i) the selling Class B Certificateholders shall have no further rights with respect to the Class B Certificates and (ii) if the purchaser(s) shall so request, each such Class B Certificateholder will comply with all the provisions of Section 3.04 of the Basic Agreement and the applicable provisions of this Trust Supplement to enable new Class B Certificates to be issued to the purchaser(s) in such denominations otherwise authorized under this Agreement as it shall request. All charges and expenses in connection with the issuance of any such new Class B Certificates shall be borne by the purchaser(s) thereof.

(c) This Section 6.01 supplements and, to the extent inconsistent with any provision of Section 6.01(d) of the Basic Agreement, replaces the provisions of Section 6.01(d) of the Basic Agreement. Notwithstanding anything to the contrary set forth herein or in any Operative Agreement, the provisions of this Section 6.01 may not be amended in any manner without the consent of each Class B Certificateholder, Class A Certificateholder and Additional Certificateholder or, as the case may be, Refinancing Certificateholder (in each case, other than the Company or any of its Affiliates in its respective capacity as a Certificateholder) that would be adversely affected thereby; provided that the purchase price under this Section 6.01 (as in effect on the date hereof) for any Certificate held by the Company or any of its Affiliates shall not be modified without the prior written consent of the Company. For the avoidance of doubt, if a Certificate Buy-Out Event ceases to exist and another Certificate Buy-Out Event occurs and is continuing, the purchase rights set forth in this Section 6.01 shall be revived notwithstanding any exercise of such rights during the continuance of any preceding Certificate Buy-Out Event.

ARTICLE VII

THE TRUSTEE

Section 7.01 Delivery of Documents; Delivery Dates . (a) The Trustee is hereby directed (i) to execute and deliver the Intercreditor Agreement, the Escrow Agreement and the NPA on or prior to the date of the initial issuance of the Class B Certificates (the “ Issuance Date ”), each in the form delivered to the Trustee by the Company, and (ii) subject to the respective terms thereof, to perform its obligations thereunder. Upon request of the Company and the satisfaction or waiver of the closing conditions specified in the Underwriting Agreement, the Trustee shall execute, deliver, authenticate, issue and sell Class B Certificates in authorized denominations equaling in the aggregate the amount set forth, with respect to the Class B Trust, in Schedule I to the Underwriting Agreement evidencing the entire ownership interest in the Class B Trust, which amount equals the maximum aggregate principal amount of Series B

Equipment Notes which may be purchased from time to time by the Trustee pursuant to the NPA. Except as provided in Sections 3.03, 3.05 and 3.06 of the Basic Agreement or Section 4.03 of this Trust Supplement, the Trustee shall not execute, authenticate or deliver Class B Certificates in excess of the aggregate amount specified in this paragraph. The provisions of this Section 7.01(a) supersede and replace the first three sentences of Section 2.02(a) of the Basic Agreement and the first sentence of Section 3.02(a) of the Basic Agreement, with respect to the Class B Trust.

(b) On or after the Issuance Date, the Company may deliver from time to time, and in accordance with Section 1(b) of the NPA, to the Trustee a Funding Notice relating to one or more Series B Equipment Notes. After receipt of such a Funding Notice and in any case no later than one Business Day prior to a Funding Date as to which such Funding Notice relates (the “ Applicable Funding Date ”), the Trustee shall (as and when specified in the Funding Notice) deliver to the Escrow Agent the Withdrawal Certificates and related Applicable Notices of Purchase Withdrawal, as contemplated by Section 1.02(c) of the Escrow Agreement and by such Funding Notice. The Trustee shall (as and when specified in such Funding Notice), subject to the conditions set forth in Section 2 of the NPA, enter into and perform its obligations under the Participation Agreement specified in such Funding Notice (the “ Applicable Participation Agreement ”) and cause such certificates, documents and legal opinions relating to the Trustee to be duly delivered as required by the Applicable Participation Agreement. If at any time prior to the Applicable Funding Date, the Trustee receives from the Company a notice pursuant to the first sentence of Section 1(f) of the NPA, then the Trustee shall give notice to the Depositary (with a copy to the Escrow Agent) of the cancellation of such Notice of Purchase Withdrawal relating to such Deposit or Deposits on such Applicable Funding Date as contemplated by Section 2.3 of the Deposit Agreement. Upon satisfaction of the conditions specified in the NPA and the Applicable Participation Agreement, the Trustee shall purchase the applicable Series B Equipment Notes with the proceeds of the withdrawals of one or more Deposits made on the Applicable Funding Date in accordance with the terms of the Deposit Agreement and the Escrow Agreement. The purchase price of such Series B Equipment Notes shall equal the principal amount of such Series B Equipment Notes. Amounts withdrawn from such Deposit or Deposits in excess of the purchase price of the Series B Equipment Notes or to the extent not applied on the Applicable Funding Date to the purchase price of the Series B Equipment Notes shall be re-deposited by the Trustee with the Depositary on the Applicable Funding Date in accordance with the terms of the Deposit Agreement. The provisions of this Section 7.01(b) supersede and replace the provisions of Section 2.02(b) of the Basic Agreement with respect to the Class B Trust, and no provisions of the Basic Agreement relating to Postponed Notes and Section 2.02 of the Basic Agreement shall apply to the Class B Trust.

(c) With respect to the Class B Trust, Section 4.01(b) of the Basic Agreement is superseded and replaced in its entirety with the following: “The Trustee shall establish and maintain on behalf of the Class B Certificateholders a Special Payments Account as one or more accounts, which shall be non-interest bearing except as provided in Section 4.04 of the Basic Agreement. The Trustee shall hold the Special Payments Account in trust for the benefit of the Class B Certificateholders and shall make or permit withdrawals therefrom only as provided in the Agreement or the Intercreditor Agreement. On each day when one or more Special Payments are made to the Trustee under the Intercreditor Agreement, the Trustee, upon receipt thereof, shall immediately deposit the aggregate amount of such Special Payments in the Special Payments Account.”

(d) With respect to the Class B Trust, the second sentence of Section 4.02(c) of the Basic Agreement shall be superseded and replaced in its entirety with the following sentence: “Subject to the provisions of the Intercreditor Agreement: (i) in the event of redemption or purchase of Series B Equipment Notes held in the Class B Trust, such notice shall be mailed not less than 15 days prior to the Special Distribution Date for the Special Payment resulting from such redemption or purchase, which Special Distribution Date shall be the date of such redemption or purchase; and (ii) in the case of any other Special Payments, such notice of Special Payment shall be mailed as soon as practicable after the Trustee has confirmed that it has received funds for such Special Payment and shall state the Special Distribution Date for such Special Payment, which shall occur 15 days after the date of such notice of Special Payment or (if such 15th day is not practicable) as soon as practicable thereafter.”

(e) With respect to the Class B Trust, clause (ii) of the third sentence of Section 4.02(c) of the Basic Agreement shall be amended by deleting in its entirety the parenthetical phrase “(taking into account any payment to be made by the Responsible Party pursuant to Section 2.02(b)).”

Section 7.02 Withdrawal of Deposits . If any Deposits remain outstanding on the Business Day next succeeding the Cut-off Date, the Trustee shall promptly give the Escrow Agent notice, as contemplated by clause (ii) of Section 1.02(f) of the Escrow Agreement, that the Trustee’s obligation to purchase Series B Equipment Notes under the NPA has terminated and the Cut-off Date has occurred.

Section 7.03 The Trustee . (a) Subject to Section 7.04 of this Trust Supplement and Section 7.15 of the Basic Agreement, the Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the NPA or the Escrow Agreement or the due execution hereof or thereof by the Company or the other parties thereto (other than the Trustee), or for or in respect of the recitals and statements contained herein or therein, all of which recitals and statements are made solely by the Company or the other parties thereto (other than the Trustee), except that the Trustee hereby represents and warrants that each of this Trust Supplement, the Basic Agreement, each Class B Certificate, the Intercreditor Agreement, the NPA and the Escrow Agreement has been executed and delivered by one of its officers who is duly authorized to execute and deliver such document on its behalf.

(b) The Trustee shall at all times be a bank or trust company, organized and doing business under the laws of the United States or any state thereof, a substantial part of the business of which consists of (i) receiving deposits and making loans or (ii) exercising fiduciary powers similar to those permitted to national banks by the Comptroller of the Currency, and which is subject to supervision and examination by state or federal authority having supervision over banking institutions.

Section 7.04 Representations and Warranties of the Trustee . The Trustee hereby represents and warrants that:

(a) the Trustee has full power, authority and legal right to execute, deliver and perform this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party and has taken all necessary action to authorize the execution, delivery and performance by it of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party;

(b) the execution, delivery and performance by the Trustee of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party (i) will not violate any provision of any United States federal law governing its trust powers or the law of the state of the United States where it is located governing the banking and trust powers of the Trustee or any order, writ, judgment, or decree of any court, arbitrator or governmental authority applicable to the Trustee or any of its assets, (ii) will not violate any provision of the charter of the Trustee, and (iii) will not violate any provision of, or constitute, with or without notice or lapse of time, a default under, or result in the creation or imposition of, any lien on any properties included in the Trust Property pursuant to the provisions of any mortgage, indenture, contract, agreement or other undertaking to which it is a party, which violation, default or lien could reasonably be expected to have an adverse effect on the Trustee’s performance or ability to perform its duties hereunder or thereunder or on the transactions contemplated herein or therein;

(c) the execution, delivery and performance by the Trustee of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party will not require the authorization, consent, or approval of, the giving of notice to, the filing or registration with, or the taking of any other action in respect of, any governmental authority or agency of the United States or the state of the United States where it is located regulating the corporate trust activities of the Trustee; and

(d) this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the NPA and the Note Documents to which it is or is to become a party have been, or will be, as applicable, duly executed and delivered by the Trustee and constitute, or will constitute, as applicable, the legal, valid and binding agreements of the Trustee, enforceable against it in accordance with their respective terms; provided , however , that enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and (ii) general principles of equity.

Section 7.05 Trustee Liens . The Trustee in its individual capacity agrees, in addition to the agreements contained in Section 7.17 of the Basic Agreement, that it will at its own cost and expense promptly take any action as may be necessary to duly discharge and satisfy in full any Trustee’s Liens on or with respect to the Trust Property which are attributable to the Trustee in its individual capacity and which are unrelated to the transactions contemplated by the Intercreditor Agreement or the NPA.

ARTICLE VIII

ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS

Section 8.01 Amendment of Section 5.02 of the Basic Agreement . Section 5.02 of the Basic Agreement shall be amended, with respect to the Class B Trust, by (i) replacing the phrase “of this Agreement” set forth in paragraph (a) thereof with the phrase “of the Note Documents, of the NPA and of this Agreement” and (ii) replacing the phrase “under this Agreement” set forth in paragraph (b) thereof with the phrase “under this Agreement, the NPA and any Note Document”.

Section 8.02 Supplemental Agreements Without Consent of Class B Certificateholders . Without limitation of Section 9.01 of the Basic Agreement, under the terms of, and subject to the limitations contained in, Section 9.01 of the Basic Agreement, the Company may (but will not be required to), and the Trustee (subject to Section 9.03 of the Basic Agreement) shall, at the request of the Company at any time and from time to time, enter into (or, in the case of the Deposit Agreement, consent to) and, if applicable, request the Escrow Agent and Escrow Paying Agent to enter into (i) one or more agreements supplemental to the Escrow Agreement, the NPA or the Deposit Agreement, for any of the purposes set forth in clauses (1) through (15) of such Section 9.01, and (without limitation of the foregoing or Section 9.01 of the Basic Agreement) (a) clauses (2) and (3) of such Section 9.01 shall also be deemed to include the Company’s obligations under (in the case of clause (2)), and the Company’s rights and powers conferred by (in the case of clause (3)), the NPA, (b) references in clauses (4) and (5) of such Section 9.01 to “any Intercreditor Agreement, any Note Purchase Agreement, any Liquidity Facility or any Parent Guarantee” shall also be deemed to refer to “the Intercreditor Agreement, the Class B Liquidity Facility, the Escrow Agreement, the NPA, any Participation Agreement or the Deposit Agreement”, (c) references to “any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee” in clause (7) of such Section 9.01 shall also be deemed to refer to “the Intercreditor Agreement, the Class B Liquidity Facility, the Escrow Agreement, the NPA, any Participation Agreement or the Deposit Agreement” and (d) references to “any Intercreditor Agreement, any Note Purchase Agreement, any Indenture, any Liquidity Facility or any Parent Guarantee” and to “any Intercreditor Agreement, any Liquidity Facility or any Parent Guarantee” in clause (8) of such Section 9.01 shall also be deemed to refer to “the Intercreditor Agreement, the NPA, any Indenture, the Class B Liquidity Facility, the Escrow Agreement, the Deposit Agreement or any Participation Agreement”, (ii) one or more agreements supplemental to any Operative Agreement, the NPA, the Escrow Agreement or the Deposit Agreement to provide for the formation of an Additional Trust, the issuance of Additional Certificates, the purchase by an Additional Trust of applicable Additional Equipment Notes and other matters incidental thereto or otherwise contemplated by Section 2.01(b) of the Basic Agreement, all as provided in Section 4(a)(v) of the NPA and Section 8.01(d) of the Intercreditor Agreement, and (iii) one or more agreements supplemental to any Operative Agreement, the NPA, the Escrow Agreement or the Deposit Agreement to provide for the formation of one or more Refinancing Trusts, the issuance of Refinancing Certificates, the purchase by any Refinancing Trust of applicable Refinancing Equipment Notes and other matters incidental thereto or as otherwise contemplated by Section 2.01(b) of the Basic Agreement, all as provided in Section 4(a)(v) of the NPA and Section 8.01(c) of the Intercreditor Agreement. In addition, the following provisions of Section 9.01 of the Basic Agreement shall be amended,

with respect to the Class B Trust, as follows: (A) Section 9.01(1) of the Basic Agreement shall be amended by replacing the word “, including” with the word “or”; (B) Section 9.01(6) of the Basic Agreement shall be amended by inserting the phrase “(or to facilitate any listing of any Certificates on any exchange or quotation system) or any requirement of DTC or like depositary,” after the phrase “any exchange or quotation system on which the Certificates of any series are listed” but before the phrase “or of any regulatory body”; (C) Section 9.01(7) of the Basic Agreement shall be amended by inserting the phrase “to establish or” after the phrase “to such extent as shall be necessary” but before the phrase “to continue”; and (D) Section 9.01(8) of the Basic Agreement shall be amended by inserting the phrase “, or to evidence the substitution of a Liquidity Provider with a Replacement Liquidity Provider or to provide for a Replacement Liquidity Facility, all as provided in any Intercreditor Agreement; or to evidence the substitution of a Depositary with a Replacement Depositary or to provide for a Replacement Deposit Agreement, all as provided in the NPA; or to evidence and provide for the acceptance of appointment by a successor Escrow Agent or successor Escrow Paying Agent under the Escrow Agreement;” after the phrase “ one or more Trusts” but before the phrase “and to add to or change”.

Section 8.03 Supplemental Agreements with Consent of Class B Certificateholders . Without limitation of Section 9.02 of the Basic Agreement, the provisions of Section 9.02 of the Basic Agreement shall apply to agreements or amendments for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Escrow Agreement, the Deposit Agreement, the Class B Liquidity Facility or the NPA or modifying in any manner the rights and obligations of the Class B Certificateholders under the Escrow Agreement, the Deposit Agreement, the Class B Liquidity Facility or the NPA; provided that the provisions of Section 9.02(1) of the Basic Agreement shall be deemed to include reductions in any manner of, or delay in the timing of, any receipt by the Class B Certificateholders of payments upon the Deposits.

Section 8.04 Consent of Holders of Certificates Issued under Other Trusts . Notwithstanding any provision in Section 8.02 or Section 8.03 of this Trust Supplement to the contrary, no amendment or modification of Section 6.01 of this Trust Supplement shall be effective unless the trustee for each Class of Certificates affected by such amendment or modification shall have consented thereto.

ARTICLE IX

MISCELLANEOUS PROVISIONS

Section 9.01 Final Termination Date . The respective obligations and responsibilities of the Company and the Trustee created hereby and the Class B Trust created hereby shall terminate upon the distribution to all Class B Certificateholders and the Trustee of all amounts required to be distributed to them pursuant to this Agreement and the disposition of all property held as part of the Trust Property; provided , however , that in no event shall the Trust created hereby continue beyond one hundred ten (110) years following the date of execution of this Trust Supplement.

Section 9.02 Basic Agreement Ratified . Except and so far as herein expressly provided, all of the provisions, terms and conditions of the Basic Agreement are in all respects ratified and confirmed; and the Basic Agreement and this Trust Supplement shall be taken, read and construed as one and the same instrument. To the extent that any provisions of the Basic Agreement are superseded by any provisions of this Trust Supplement, any reference to such provisions of the Basic Agreement herein or in the Basic Agreement shall be deemed to be such provisions of this Trust Supplement.

Section 9.03 Governing Law . THIS AGREEMENT HAS BEEN DELIVERED IN THE STATE OF NEW YORK AND THIS AGREEMENT AND THE CLASS B CERTIFICATES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Section 9.04 Counterparts . This Trust Supplement may be executed in any number of counterparts (and no party shall be required to execute the same counterpart). Each counterpart of this Trust Supplement including a signature page or pages executed by each of the parties hereto shall be an original counterpart of this Trust Supplement, but all of such counterparts together constitute one instrument. The parties intend that faxed signatures and electronically imaged signatures such as .pdf files shall constitute original signatures and are binding on all parties. The original documents shall be promptly delivered, if requested.

Section 9.05 Intention of Parties . The parties hereto intend that the Class B Trust be classified for United States federal income tax purposes as a grantor trust under Subpart E, Part I, Subchapter J, Chapter 1 of Subtitle A of the Code, and not as a trust or association taxable as a corporation or as a partnership. Each Certificateholder of, and each Person acquiring a beneficial interest in, a Class B Certificate, by its acceptance of its Class B Certificate or a beneficial interest therein, agrees to treat the Class B Trust as a grantor trust for all United States federal, state and local income tax purposes. The Trustee shall not be authorized or empowered to do anything that would cause the Class B Trust to fail to qualify as a grantor trust for such tax purposes (including as subject to this restriction, acquiring any Aircraft by bidding the Equipment Notes relating thereto or otherwise, or taking any action with respect to any such Aircraft once acquired).

Section 9.06 Submission to Jurisdiction . (a) Each of the parties hereto, to the extent it may do so under applicable law, for purposes hereof and of all other Operative Agreements hereby (i) irrevocably submits itself to the non-exclusive jurisdiction of the courts of the State of New York sitting in the City of New York and to the non-exclusive jurisdiction of the United States District Court for the Southern District of New York, for the purposes of any suit, action or other proceeding arising out of this Agreement, the subject matter hereof or any of the transactions contemplated hereby brought by any party or parties hereto or thereto, or their successors or permitted assigns, (ii) waives, and agrees not to assert, by way of motion, as a defense, or otherwise, in any such suit, action or proceeding, that the suit, action or proceeding is brought in an inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Agreement or the subject matter hereof or any of the transactions contemplated hereby may not be enforced in or by such courts, (iii) agrees that service of process in any such action or proceeding may be effected by mailing a copy thereof by registered or certified mail (or any

substantially similar form of mail), postage prepaid, to each party hereto at its address set forth in Section 12.04 of the Basic Agreement, or at such other address of which the other parties shall have been notified pursuant thereto; and (iv) agrees that nothing herein shall affect the right to effect service of process in any other manner permitted by law or shall limit the right to sue in any other jurisdiction.

[ Remainder of Page Intentionally Blank; Signature Pages Follow ]

IN WITNESS WHEREOF, the parties have caused this Trust Supplement to be duly executed by their respective officers thereto duly authorized as of the date first written above.

[ Signature Page to Trust Supplement 2014-1B ]

[ Signature Page to Trust Supplement 2014-1B ]

EXHIBIT A to

TRUST SUPPLEMENT NO. 2014-1B

FORM OF CERTIFICATE

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“ DTC ”), TO THE TRUSTEE OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] ¹

BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF A PLAN OR ANY TRUST ESTABLISHED WITH RESPECT TO A PLAN HAVE BEEN USED TO ACQUIRE THIS CERTIFICATE OR AN INTEREST HEREIN OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE OR INTEREST HEREIN BY SUCH A PERSON ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE OR SUBSTANTIALLY SIMILAR PROVISIONS OF FOREIGN, FEDERAL, STATE OR LOCAL LAW PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS. CERTAIN TERMS USED IN THIS PARAGRAPH SHALL HAVE THE MEANINGS SPECIFIED IN THE AGREEMENT.

[GLOBAL CERTIFICATE] ¹

AMERICAN AIRLINES PASS THROUGH TRUST 2014-1B

AMERICAN AIRLINES PASS THROUGH CERTIFICATE, SERIES 2014-1B

Final Expected Regular Distribution Date: October 1, 2022

evidencing a fractional undivided interest in the Trust,

the property of which includes or will include, among

other things, certain Equipment Notes each secured by

an Aircraft owned by American Airlines, Inc.

THIS CERTIFIES THAT                  , for value received, is the registered owner of a $            (            dollars) Fractional Undivided Interest (or such lesser amounts as shall be the aggregate outstanding face amount hereof as set forth in the records of the Trustee) in the American Airlines Pass Through Trust, Series 2014-1B (the “ Trust ”) created by Wilmington Trust Company, as trustee (together with any successor in interest and any successor or other trustee appointed pursuant to the Trust Supplement referred to below, the “ Trustee ”) under a Pass Through Trust Agreement, dated as of September 16, 2014 (the “ Basic Agreement ”), between Wilmington Trust Company, a Delaware trust company and American Airlines, Inc., a Delaware corporation (together with any successor in interest pursuant to Section 5.02 of the Basic Agreement, the “ Company ”), as supplemented by Trust Supplement No. 2014-1B thereto, dated as of September 16, 2014 (collectively, and as may be amended from time to time, the “ Agreement ”), between the Trustee and the Company, a summary of certain of the pertinent provisions of which is set forth below. To the extent not otherwise defined herein, the capitalized terms used herein have the meanings assigned to them in the Agreement. This Certificate is one of the duly authorized Certificates designated as “American Airlines Pass Through Certificates, Series 2014-1B” (herein called the “ Certificates ”). This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement. By virtue of its acceptance hereof, the Certificateholder of this Certificate assents to and agrees to be bound by all of the provisions of the Agreement and the Intercreditor Agreement, including the subordination provisions of Section 9.09 of the Intercreditor Agreement. The Trust Property is expected to include certain Equipment Notes and includes all rights of the Trust and the Trustee, on behalf of the Trust, to receive any payments under the Intercreditor Agreement and the Class B Liquidity Facility. Each issue of the Equipment Notes will be secured by, among other things, a security interest in the Aircraft owned by the Company.

The Certificates represent Fractional Undivided Interests in the Trust and the Trust Property, and will have no rights, benefits or interest in respect of any other separate trust established pursuant to the terms of the Basic Agreement for any other series of certificates issued pursuant thereto.

Subject to and in accordance with the terms of the Agreement and the Intercreditor Agreement, from funds then available to the Trustee, there will be distributed on each April 1 and October 1 (each, a “ Regular Distribution Date ”), commencing on April 1, 2015, to the Person in whose name this Certificate is registered at the close of business on the 15th day preceding the Regular Distribution Date, an amount in respect of the Scheduled Payments on the Series B Equipment Notes due on such Regular Distribution Date, the receipt of which has been confirmed by the Trustee, equal to the product of the percentage interest in the Trust evidenced by this Certificate and an amount equal to the sum of such Scheduled Payments. Subject to and in accordance with the terms of the Agreement and the Intercreditor Agreement, in the event that Special Payments on the Series B Equipment Notes are received by the Trustee, from funds then available to the Trustee, there shall be distributed on the applicable Special Distribution Date, to the Person in whose name this Certificate is registered at the close of business on the 15th day preceding the applicable Special Distribution Date, an amount in respect of such Special Payments on the Series B Equipment Notes, the receipt of which has been confirmed by the Trustee, equal to the product of the percentage interest in the Trust evidenced by this Certificate and an amount equal to the sum of such Special Payments so received. If a Regular Distribution Date or Special Distribution Date is not a Business Day, distribution shall be made on the immediately following Business Day and no interest shall accrue during the intervening period. The Trustee shall mail notice of each Special Payment and the Special Distribution Date therefor to the Certificateholder of this Certificate.

Distributions on this Certificate will be made by the Trustee by check mailed to the Person entitled thereto, without the presentation or surrender of this Certificate or the making of any notation hereon, except that with respect to Certificates registered on the Record Date in the name of a Clearing Agency (or its nominee), such distributions shall be made by wire transfer. Except as otherwise provided in the Agreement and notwithstanding the above, the final distribution on this Certificate will be made after notice mailed by the Trustee of the pendency of such distribution and only upon presentation and surrender of this Certificate at the office or agency of the Trustee specified in such notice.

The Certificates do not represent a direct obligation of, or an obligation guaranteed by, or an interest in, the Company, the Trustee, the Subordination Agent, any Loan Trustee or any Affiliate of any thereof. The Certificates are limited in right of payment, all as more specifically set forth on the face hereof and in the Agreement. All payments or distributions made to Certificateholders under the Agreement shall be made only from the Trust Property and only to the extent that the Trustee shall have sufficient income or proceeds from the Trust Property to make such payments in accordance with the terms of the Agreement. Each Certificateholder of this Certificate, by its acceptance hereof, agrees that it will look solely to the income and proceeds from the Trust Property to the extent available for any payment or distribution to such Certificateholder pursuant to the terms of the Agreement and that it will not have any recourse to the Company, the Trustee, the Loan Trustees or any Affiliate of any thereof except as otherwise expressly provided in the Agreement, in any Note Document or in the

Intercreditor Agreement. This Certificate does not purport to summarize the Agreement and reference is made to the Agreement for information with respect to the interests, rights, benefits, obligations, proceeds and duties evidenced hereby. A copy of the Agreement may be examined during normal business hours at the principal office of the Trustee, and at such other places, if any, designated by the Trustee, by any Certificateholder upon request.

The Agreement permits, with certain exceptions therein provided, the amendment thereof, and the modification of the rights and obligations of the Company and the rights of the Certificateholders under the Agreement, at any time by the Company and the Trustee with the consent of the Certificateholders holding Certificates evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the Trust. Any such consent by the Certificateholder of this Certificate shall be conclusive and binding on such Certificateholder and upon all future Certificateholders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange hereof or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Certificateholders of any of the Certificates.

As provided in the Agreement and subject to certain limitations set forth therein, the transfer of this Certificate is registrable in the Register upon surrender of this Certificate for registration of transfer at the offices or agencies maintained by the Trustee in its capacity as Registrar, or by any successor Registrar, duly endorsed or accompanied by a written instrument of transfer in form satisfactory to the Trustee and the Registrar, duly executed by the Certificateholder hereof or such Certificateholder’s attorney duly authorized in writing, and thereupon one or more new Certificates of authorized denominations evidencing the same aggregate Fractional Undivided Interest in the Trust will be issued to the designated transferee or transferees.

The Certificates are issuable only as registered Certificates without coupons in minimum denominations of $2,000 (or such other denomination that is the lowest integral multiple of $1,000 that is, at the time of issuance, equal to at least 1,000 euros) Fractional Undivided Interest and integral multiples of $1,000 in excess thereof except that one Certificate may be issued in a different denomination. As provided in the Agreement and subject to certain limitations therein set forth, the Certificates are exchangeable for new Certificates of authorized denominations evidencing the same aggregate Fractional Undivided Interest in the Trust, as requested by the Certificateholder surrendering the same.

No service charge will be made for any such registration of transfer or exchange, but the Trustee shall require payment of a sum sufficient to cover any tax or governmental charge payable in connection therewith.

The Company, the Trustee, the Registrar and any Paying Agent shall deem and treat the Person in whose name this Certificate is registered as the owner hereof for all purposes, and none of the Company, the Trustee, the Registrar or any such agent shall be affected by any notice to the contrary.

Each Certificateholder and Person with a beneficial interest herein, by its acceptance of this Certificate or such interest, agrees to treat the Trust as a grantor trust for all U.S. federal, state and local income tax purposes.

The obligations and responsibilities created by the Agreement and the Trust created thereby shall terminate upon the distribution to Certificateholders of all amounts required to be distributed to them pursuant to the Agreement and the disposition of all property held as part of the Trust Property.

Any Person acquiring or accepting this Certificate or an interest herein will, by such acquisition or acceptance, be deemed to (a) represent and warrant to the Company, the Loan Trustees and the Trustee that either: (i) no assets of a Plan or any trust established with respect to a Plan have been used to purchase or hold this Certificate or an interest herein or (ii) the purchase and holding of this Certificate or interest herein by such Person are exempt from the prohibited transaction restrictions of ERISA and the Code or provisions of Similar Law pursuant to one or more prohibited transaction statutory or administrative exemptions; and (b) direct the Trustee to invest the assets held in the Trust pursuant to, and take all other actions contemplated by, the terms and conditions of the Basic Agreement, this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the Escrow Agreement, the NPA, and each Participation Agreement.

THIS CERTIFICATE AND THE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Unless the certificate of authentication hereon has been executed by the Trustee, by manual signature, this Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose.

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed.

Dated:

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Agreement.

[FORM OF TRANSFER NOTICE]

FOR VALUE RECEIVED the undersigned registered holder hereby sell(s), assign(s) and transfer(s) unto

Insert Taxpayer Identification No .

Please print or typewrite name and address including zip code of assignee

the within Certificate and all rights thereunder, hereby irrevocably constituting and appointing                                                           attorney to transfer said Certificate on the books of the Trustee with full power of substitution in the premises.

SIGNATURE GUARANTEE:                                                   

Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“ STAMP ”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended.

EXHIBIT B to

TRUST SUPPLEMENT NO. 2014-1B

DTC LETTER OF REPRESENTATIONS

Exhibit 4.4

Execution Version

INTERCREDITOR AGREEMENT

(2014-1)

Dated as of September 16, 2014

among

WILMINGTON TRUST COMPANY,

as Trustee of the

American Airlines Pass Through Trust 2014-1A

and

American Airlines Pass Through Trust 2014-1B

CRÉDIT AGRICOLE CORPORATE AND INVESTMENT BANK,

ACTING THROUGH ITS NEW YORK BRANCH,

as Class A Liquidity Provider

and as Class B Liquidity Provider,

and

WILMINGTON TRUST COMPANY,

as Subordination Agent

Intercreditor Agreement (2014-1)

AA Aircraft EETC

Table of Contents

INTERCREDITOR AGREEMENT

This INTERCREDITOR AGREEMENT, dated as of September 16, 2014, is made by and among WILMINGTON TRUST COMPANY, a Delaware trust company (in its individual capacity, together with its successors and permitted assigns, “ WTC ”), not in its individual capacity but solely as trustee of each Trust (such term and other capitalized terms used herein without definition being defined as provided in Article I ), CRÉDIT AGRICOLE CORPORATE AND INVESTMENT BANK, a société anonyme organized under the laws of France, acting through its New York Branch, as Class A Liquidity Provider and Class B Liquidity Provider (“ Credit Agricole ”), and WILMINGTON TRUST COMPANY, a Delaware trust company, not in its individual capacity except as expressly set forth herein, but solely as Subordination Agent and trustee hereunder (in such capacity, together with any successor appointed pursuant to Article VII , the “ Subordination Agent ”).

WHEREAS, pursuant to each Indenture with respect to an Aircraft, American will issue on a recourse basis two series of Equipment Notes secured by, among other things, such Aircraft;

WHEREAS, pursuant to each Participation Agreement, each Trust will acquire Equipment Notes having an interest rate identical to the interest rate applicable to the Certificates issued by such Trust;

WHEREAS, pursuant to each Trust Agreement, the Trust created thereby proposes to issue a single Class of Certificates bearing the interest rate and having the final distribution date described in such Trust Agreement on the terms and subject to the conditions set forth therein;

WHEREAS, pursuant to the Underwriting Agreement, the Underwriters propose to purchase the Class A Certificates issued by the Class A Trust and the Class B Certificates issued by the Class B Trust in the aggregate face amount set forth opposite the name of such Trust on Schedule I thereto on the terms and subject to the conditions set forth therein;

WHEREAS, the Liquidity Provider proposes to enter into two separate revolving credit agreements with the Subordination Agent, as agent and trustee for the Trustee of each of the Class A Trust and the Class B Trust, respectively, for the benefit of the Certificateholders of such Trust; and

WHEREAS, it is a condition precedent to the obligations of the Underwriters under the Underwriting Agreement that the Subordination Agent, the Trustees and the Liquidity Provider agree to the terms of subordination set forth in this Agreement in respect of each Class of Certificates, and the Subordination Agent, the Trustees and the Liquidity Provider, by entering into this Agreement, hereby acknowledge and agree to such terms of subordination and the other provisions of this Agreement;

NOW, THEREFORE, in consideration of the mutual agreements herein contained, and of other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I

DEFINITIONS

Section 1.01. Definitions . (a) The definitions stated herein apply equally to the singular and the plural forms of the terms defined.

(b) All references in this Agreement to designated “Articles”, “Sections” and other subdivisions are to the designated Articles, Sections and other subdivisions of this Agreement.

(c) The words “herein”, “hereof” and “hereunder” and other words of similar import refer to this Agreement as a whole and not to any particular Article, Section or other subdivision.

(d) Unless the context otherwise requires, whenever the words “including”, “include” or “includes” are used herein, it shall be deemed to be followed by the phrase “without limitation”.

(e) All references in this Agreement to a Person shall include successors and permitted assigns of such Person.

(f) For purposes of this Agreement, unless the context otherwise requires, the following capitalized terms shall have the following meanings:

“ Acceleration ” means, with respect to the amounts payable in respect of the Equipment Notes issued under any Indenture, such amounts becoming immediately due and payable by declaration or otherwise. “Accelerate”, “Accelerated” and “Accelerating” have meanings correlative to the foregoing.

“ Actual Disposition Event ” means, in respect of any Equipment Note: (i) the sale or disposition by the applicable Loan Trustee of the Aircraft securing such Equipment Note for cash, (ii) the occurrence of the mandatory redemption date for such Equipment Note following an Event of Loss (as defined in such Indenture) with respect to such Aircraft or (iii) the sale by the Subordination Agent of such Equipment Note for cash.

“ Additional Certificateholders ” has the meaning specified in Section 8.01(d) .

“ Additional Certificates ” has the meaning specified in Section 8.01(d) .

“ Additional Equipment Notes ” has the meaning specified in Section 8.01(d) .

“ Additional Trust ” has the meaning specified in Section 8.01(d) .

“ Additional Trust Agreement ” has the meaning specified in Section 8.01(d) .

“ Additional Trustee ” has the meaning specified in Section 8.01(d) .

“ Administration Expenses ” has the meaning specified in clause “first” of Section 3.02 .

“ Advance ” means, with respect to any Liquidity Facility, any Advance as defined in such Liquidity Facility.

“ Affiliate ” means, with respect to any Person, any other Person directly or indirectly controlling, controlled by or under direct or indirect common control with such Person. For the purposes of this definition, “control”, when used with respect to any specified Person, means the power, directly or indirectly, to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting securities or by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

“ Agreement ” means this Intercreditor Agreement, dated as of September 16, 2014, as it may be amended, supplemented or otherwise modified from time to time.

“ American Bankruptcy Event ” means the occurrence and continuation of any of the following:

(a) American consents to the appointment of or the taking of possession by a receiver, trustee or liquidator of itself or of a substantial part of its property, admits in writing its inability to pay its debts generally as they come due or makes a general assignment for the benefit of creditors;

(b) American files a voluntary petition in bankruptcy or a voluntary petition or an answer seeking reorganization, liquidation or other relief as a debtor in a case under any bankruptcy laws or insolvency laws (as in effect at such time) or an answer admitting the material allegations of a petition filed against American as a debtor in any such case, or American seeks relief as a debtor by voluntary petition, answer or consent, under the provisions of any other bankruptcy or other similar law providing for the reorganization or winding-up of corporations (as in effect at such time), or American seeks an agreement, composition, extension or adjustment with its creditors under such laws; or

(c) an order, judgment or decree is entered by any court of competent jurisdiction appointing, without the consent of American, a receiver, trustee or liquidator of American or sequestering any substantial part of its property, or granting any other relief in respect of American as a debtor under any bankruptcy laws or insolvency laws (as in effect at such time), and any such order, judgment or decree of appointment or sequestration remains in force undismissed, unstayed and unvacated for a period of 90 days after the date of entry thereof; or

(d) a petition against American as a debtor in a case under the federal bankruptcy laws or other insolvency laws (as in effect at such time) is filed and not withdrawn or dismissed within 90 days thereafter, or if, under the provisions of any law

providing for reorganization or winding-up of corporations that applies to American , any court of competent jurisdiction assumes jurisdiction, custody or control of American or of any substantial part of its property and such jurisdiction, custody or control remains in force unrelinquished, unstayed and unterminated for a period of 90 days.

“ American Provisions ” has the meaning specified in Section 8.01(a) .

“ Appraisal ” has the meaning specified in Section 4.01(a)(iv) .

“ Appraised Current Market Value ” of any Aircraft means the lower of the average and the median of the three most recent Post-Default Appraisals of such Aircraft.

“ Appraisers ” means Aircraft Information Services, Inc., BK Associates, Inc. and Morten Beyer & Agnew, Inc. or, so long as the Person entitled or required hereunder to select such Appraiser acts reasonably, any other nationally recognized appraiser reasonably satisfactory to the Subordination Agent and the Controlling Party.

“ Available Amount ” means, with respect to any Liquidity Facility on any drawing date, subject to the proviso contained in the first sentence of Section 3.05(g) , an amount equal to (a) the Stated Amount of such Liquidity Facility at such time, less (b) the aggregate amount of each Interest Drawing honored by the Liquidity Provider under such Liquidity Facility on or prior to such date that has not been reimbursed or reinstated as of such date; provided , that, following a Downgrade Drawing, a Non-Extension Drawing, a Special Termination Drawing or a Final Drawing under such Liquidity Facility, the Available Amount of such Liquidity Facility shall be zero.

“ Bankruptcy Code ” means the United States Bankruptcy Code, 11 United States Code §§101 et seq. , as amended, or any successor statutes thereto.

“ Basic Agreement ” means that certain Pass Through Trust Agreement, dated as of September 16, 2014, between American and Wilmington Trust Company, as trustee, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms, but does not include any Trust Supplement.

“ Business Day ” means, with respect to the Certificates of any Class, any day other than a Saturday, or a Sunday or a day on which commercial banks are required or authorized to close in New York, New York, Fort Worth, Texas, Wilmington, Delaware, or, so long as any Certificate is outstanding, the city and state in which any Trustee, the Subordination Agent or any related Loan Trustee maintains its Corporate Trust Office or receives and disburses funds, and that, solely with respect to draws under any Liquidity Facility, also is a “Business Day” as defined in such Liquidity Facility.

“ Cash Collateral Account ” means the Class A Cash Collateral Account or the Class B Cash Collateral Account, as applicable.

“ Certificate ” means a Class A Certificate or a Class B Certificate, as applicable.

“ Certificate Buy-Out Event ” means that an American Bankruptcy Event has occurred and is continuing and either of the following events has occurred: (A) (i) the 60-Day Period has expired, and (ii) American has not entered into one or more agreements under Section 1110(a)(2)(A) of the Bankruptcy Code to perform all of its obligations under all of the Indentures and cured defaults under all of the Indentures in accordance with Section 1110(a)(2)(B) of the Bankruptcy Code or, if it has entered into such agreements, has at any time thereafter failed to cure any default under any of the Indentures in accordance with Section 1110(a)(2)(B) of the Bankruptcy Code; or (B) prior to the expiry of the 60-Day Period, American shall have abandoned any Aircraft.

“ Certificateholder ” means, with respect to any Class of Certificates, the Person in whose name a Certificate is registered in the Register for the Certificates of such Class.

“ Citizen of the United States ” has the meaning specified for such term in Section 40102(a)(15) of Title 49 of the United States Code or any similar legislation of the United States enacted in substitution or replacement therefor.

“ Class ” means a single class of Certificates issued by a Trust pursuant to a Trust Agreement.

“ Class A Cash Collateral Account ” means, in respect of the Class A Liquidity Facility, an Eligible Deposit Account in the name of the Subordination Agent maintained at an Eligible Institution, which shall be the Subordination Agent if it so qualifies, into which amounts shall be deposited as referred to in Section 3.05(f) .

“ Class A Certificateholder ” means, at any time, any Certificateholder of one or more Class A Certificates.

“ Class A Certificates ” means the certificates issued by the Class A Trust, substantially in the form of Exhibit A to the Class A Trust Agreement, and authenticated by the Class A Trustee, representing Fractional Undivided Interests in the Class A Trust, and any certificates issued in exchange therefor or replacement thereof pursuant to the terms of the Class A Trust Agreement.

“ Class A Liquidity Expenses ” means all Class A Liquidity Obligations other than (i) the principal amount of any Drawings under the Class A Liquidity Facility and (ii) any interest accrued on any Class A Liquidity Obligations.

“ Class A Liquidity Facility ” means, initially, the Revolving Credit Agreement (2014-1A), dated as of the date hereof, between the Subordination Agent, as agent and trustee for the Class A Trustee, and Credit Agricole and, from and after the replacement of such agreement pursuant hereto, the Replacement Liquidity Facility therefor, if any, in each case as amended, supplemented or otherwise modified from time to time in accordance with its terms; provided that for purposes of any obligation of American, no amendment, modification or supplement to, or substitution or replacement of, any Class A Liquidity Facility shall be effective unless consented to by American.

“ Class A Liquidity Obligations ” means all principal, interest, fees and other amounts owing to the Class A Liquidity Provider under the Class A Liquidity Facility, Section 4.02 of the Participation Agreements or the applicable Fee Letter.

“ Class A Liquidity Provider ” means Credit Agricole, together with any Replacement Liquidity Provider that has issued a Replacement Liquidity Facility to replace the Class A Liquidity Facility pursuant to Section 3.05(c) or 3.05(e) .

“ Class A Trust ” means the American Airlines Pass Through Trust 2014-1A created and administered pursuant to the Class A Trust Agreement.

“ Class A Trust Agreement ” means the Basic Agreement, as supplemented by Trust Supplement No. 2014-1A thereto, dated as of the date hereof, governing the creation and administration of the American Airlines Pass Through Trust 2014-1A and the issuance of the Class A Certificates, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

“ Class A Trustee ” means Wilmington Trust Company, not in its individual capacity except as expressly set forth in the Class A Trust Agreement, but solely as trustee under the Class A Trust Agreement, together with any successor trustee appointed pursuant thereto.

“ Class B Adjusted Interest ” means, as of any Current Distribution Date: (I) any interest described in clause (II)  of this definition accrued prior to the immediately preceding Distribution Date which remains unpaid and (II) the sum of (A) interest determined at the Stated Interest Rate for the Class B Certificates for the period commencing on, and including, the immediately preceding Distribution Date (or, if the Current Distribution Date is the first Distribution Date, the Closing Date) and ending on, but excluding, the Current Distribution Date, on the Eligible B Pool Balance on such Current Distribution Date and (B) the sum of interest for each Series B Equipment Note with respect to which, or with respect to the Aircraft with respect to which such Equipment Note was issued, a disposition, distribution, sale or Deemed Disposition Event has occurred since the immediately preceding Distribution Date (but only if no such event has previously occurred with respect to such Series B Equipment Note), determined at the Stated Interest Rate for the Class B Certificates for each day during the period commencing on, and including, the immediately preceding Distribution Date (or, if the Current Distribution Date is the first Distribution Date, the Closing Date) and ending on, but excluding, the date of the earliest of such disposition, distribution, sale or Deemed Disposition Event with respect to such Series B Equipment Note or such Aircraft, as the case may be, on the principal amount of such Series B Equipment Note calculated pursuant to clause (B)(i ), (ii) , (iii)  or (iv) , as applicable, of the definition of Eligible B Pool Balance.

“ Class B Cash Collateral Account ” means, in respect of the Class B Liquidity Facility, an Eligible Deposit Account in the name of the Subordination Agent maintained at an Eligible Institution, which shall be the Subordination Agent if it so qualifies, into which amounts shall be deposited as referred to in Section 3.05(f) .

“ Class B Certificateholder ” means, at any time, any Certificateholder of one or more Class B Certificates.

“ Class B Certificates ” means the certificates issued by the Class B Trust, substantially in the form of Exhibit A to the Class B Trust Agreement, and authenticated by the Class B Trustee, representing Fractional Undivided Interests in the Class B Trust, and any certificates issued in exchange therefor or replacement thereof pursuant to the terms of the Class B Trust Agreement.

“ Class B Liquidity Expenses ” means all Class B Liquidity Obligations other than (i) the principal amount of any Drawings under the Class B Liquidity Facility and (ii) any interest accrued on any Class B Liquidity Obligations.

“ Class B Liquidity Facility ” means, initially, the Revolving Credit Agreement (2014-1B), dated as of the date hereof, between the Subordination Agent, as agent and trustee for the Class B Trustee, and Credit Agricole and, from and after the replacement of such agreement pursuant hereto, the Replacement Liquidity Facility therefor, if any, in each case as amended, supplemented or otherwise modified from time to time in accordance with its terms; provided that for purposes of any obligation of American, no Class B Liquidity Facility and no amendment, modification or supplement to, or substitution or replacement of, any Class B Liquidity Facility shall be effective unless consented to by American.

“ Class B Liquidity Obligations ” means all principal, interest, fees and other amounts owing to the Class B Liquidity Provider under the Class B Liquidity Facility, Section 4.02 of the Participation Agreements or the applicable Fee Letter.

“ Class B Liquidity Provider ” means Credit Agricole, together with any Replacement Liquidity Provider that has issued a Replacement Liquidity Facility to replace the Class B Liquidity Facility pursuant to Section 3.05(c) or 3.05(e) .

“ Class B Trust ” means the American Airlines Pass Through Trust 2014-1B created and administered pursuant to the Class B Trust Agreement.

“ Class B Trust Agreement ” means the Basic Agreement, as supplemented by Trust Supplement No. 2014-1B thereto, dated as of the date hereof, governing the creation and administration of the American Airlines Pass Through Trust 2014-1B and the issuance of the Class B Certificates, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

“ Class B Trustee ” means Wilmington Trust Company, not in its individual capacity except as expressly set forth in the Class B Trust Agreement, but solely as trustee under the Class B Trust Agreement, together with any successor trustee appointed pursuant thereto.

“ Closing Date ” means September 16, 2014.

“ Code ” means the Internal Revenue Code of 1986, as amended from time to time, and the Treasury Regulations promulgated thereunder.

“ Collateral ” means, with respect to any Indenture, the “Collateral” referred to therein.

“ Collection Account ” means the Eligible Deposit Account established by the Subordination Agent pursuant to Section 2.02(a) in and from which the Subordination Agent shall make deposits and withdrawals in accordance with this Agreement.

“ Consent Notice ” has the meaning specified in Section 3.05(d) .

“ Consent Period ” has the meaning specified in Section 3.05(d) .

“ Controlling Party ” means the Person entitled to act as such pursuant to the terms of Section 2.06 .

“ Corporate Trust Office ” means, with respect to any Trustee, the Subordination Agent or any Loan Trustee, the office of such Person in the city at which, at any particular time, its corporate trust business shall be principally administered.

“ Current Distribution Date ” means a Distribution Date specified as a reference date for calculating the Expected Distributions with respect to the Certificates of any Trust as of such Distribution Date.

“ Deemed Disposition Event ” means, in respect of any Equipment Note, the continuation of an Indenture Event of Default in respect of such Equipment Note without an Actual Disposition Event occurring in respect of such Equipment Note for a period of five years from the date of the occurrence of such Indenture Event of Default.

“ Delivery Period Termination Date ” has the meaning specified in the Note Purchase Agreement.

“ Deposit Agreement ” means, subject to Section 5 of the Note Purchase Agreement, with respect to any Class of Certificates, the Deposit Agreement pertaining to such Class, dated as of the date hereof, between the Escrow Agent and the Depositary, as the same may be amended, modified or supplemented from time to time in accordance with the terms thereof.

“ Depositary ” means, subject to Section 5 of the Note Purchase Agreement, Crédit Agricole, as depositary under each Deposit Agreement.

“ Deposits ” with respect to any Class of Certificates, has the meaning set forth in the Deposit Agreement pertaining to such Class.

“ Designated Representatives ” means the Subordination Agent Representatives, the Trustee Representatives and the LP Representatives identified under Section 2.05 .

“ Distribution Date ” means a Regular Distribution Date or a Special Distribution Date.

“ Dollars ” or “ $ ” means the lawful currency of the United States.

“ Downgrade Date ” has the meaning specified in Section 3.05(c)(i) .

“ Downgrade Drawing ” has the meaning specified in Section 3.05(c)(iii) .

“ Downgrade Event ” with respect to any Liquidity Facility has the meaning specified in such Liquidity Facility.

“ Downgraded Facility ” has the meaning specified in Section 3.05(c)(i) .

“ Drawing ” means an Interest Drawing, a Final Drawing, a Non-Extension Drawing, a Special Termination Drawing or a Downgrade Drawing, as the case may be.

“ DTC ” means The Depository Trust Company.

“ Eligible B Pool Balance ” means, as of any date of determination, the excess of (A) the Pool Balance of the Class B Certificates as of the immediately preceding Distribution Date (or, if such date of determination is on or before the first Distribution Date, the original aggregate face amount of the Class B Certificates) (after giving effect to distributions made on such date of determination) over (B) the sum of, with respect to each Series B Equipment Note, one of the following amounts, if applicable: (i) if there has previously been a sale or disposition by the applicable Loan Trustee of the applicable Aircraft for cash under the Indenture pursuant to which such Series B Equipment Note was issued, the outstanding principal amount of such Series B Equipment Note that remains unpaid as of such date of determination subsequent to such sale or disposition and after giving effect to any distributions of the proceeds of such sale or disposition applied under such Indenture to the payment of such Series B Equipment Note, (ii) if there has previously been an Event of Loss (as defined in such Indenture) with respect to the applicable Aircraft to which such Series B Equipment Note relates, the outstanding principal amount of such Series B Equipment Note that remains unpaid as of such date of determination subsequent to the scheduled date of mandatory redemption of such Series B Equipment Note following such Event of Loss and after giving effect to the distributions of any proceeds in respect of such Event of Loss applied under such Indenture to the payment of such Series B Equipment Note, (iii) if such Series B Equipment Note has previously been sold for cash by the Subordination Agent, the excess, if any, of (x) the outstanding amount of principal and interest as of the date of such sale by the Subordination Agent of such Series B Equipment Note over (y) the purchase price received with respect to such sale of such Series B Equipment Note for cash (net of any applicable costs and expenses of such sale) or (iv) if a Deemed Disposition Event has occurred with respect to such Series B Equipment Note, the outstanding principal amount of such Series B Equipment Note; provided , however , that if more than one of the clauses (i) , (ii) , (iii)  and (iv)  is applicable to any one Series B Equipment Note, only the amount determined pursuant to the clause that first became applicable shall be counted with respect to such Series B Equipment Note.

“ Eligible Deposit Account ” means either (a) a segregated account with an Eligible Institution or (b) a segregated trust account with the corporate trust department of a depository institution organized under the laws of the United States of America or any one of the states thereof or the District of Columbia (or any U.S. branch of a foreign bank), having corporate trust powers and acting as trustee for funds deposited in such account, so long as any of the securities of such depository institution has a Long-Term Rating of at least A- or its equivalent from S&P or at least A3 or its equivalent from Moody’s. An Eligible Deposit

Account may be maintained with the Subordination Agent or a Liquidity Provider so long as the Subordination Agent or such Liquidity Provider is an Eligible Institution; provided that the Subordination Agent, in its individual capacity, or such Liquidity Provider shall have waived all rights of set-off and counterclaim with respect to such account.

“ Eligible Institution ” means (a) the corporate trust department of the Subordination Agent or any Trustee, as applicable, or (b) a depository institution organized under the laws of the United States of America or any one of the states thereof or the District of Columbia (or any U.S. branch of a foreign bank), which has a Long Term Rating from each Rating Agency of at least A- or its equivalent by S&P or at least A3 or its equivalent by Moody’s.

“ Eligible Investments ” means investments in (a) obligations of the United States government or agencies thereof, or obligations guaranteed by the United States government having maturities no later than 90 days following the date of such investment, (b) open market commercial paper of any corporation incorporated under the laws of the United States of America or any state thereof having a Short-Term Rating of at least A-1 or its equivalent by S&P or at least P-1 or its equivalent by Moody’s, having maturities no later than 90 days following the date of such investment, (c) certificates of deposit, time deposits, banker’s acceptances, commercial paper or other direct obligations of, or obligations guaranteed by, commercial banks organized under the laws of the United States or of any political subdivision thereof (or any United States branch of a foreign bank) having a combined capital and surplus in excess of $500,000,000 which banks or their holding companies have a Long-Term Rating of at least A- or its equivalent by S&P or at least A3 or its equivalent by Moody’s, having maturities no later than 90 days following the date of such investment; provided , however , that the aggregate amount at any one time invested in certificates of deposit issued by any one bank shall not be in excess of 5% of such bank’s capital and surplus, (d) Dollar denominated offshore certificates of deposit issued by, or offshore time deposits with, any commercial bank described in clause (c) or any subsidiary thereof, and (e) repurchase agreements with any financial institution having combined capital and surplus of at least $500,000,000 with any of the obligations described in clauses (a) through (d)  as collateral. If none of the above investments is available, the entire amounts to be invested may be used to purchase Federal funds from an entity described in clause (c) . All Eligible Investments must be held in an Eligible Deposit Account. Any of the investments described herein may be made through or with, as applicable, the bank acting as Trustee or its Affiliates.

“ Equipment Note Special Payment ” means a Special Payment on account of the redemption, purchase or prepayment of all of the Equipment Notes issued pursuant to an Indenture.

“ Equipment Notes ” means, at any time, the Series A Equipment Notes and the Series B Equipment Notes and in either case, any Equipment Notes issued in exchange therefor or replacement thereof pursuant to the terms of the Indentures.

“ Escrow Agent ” means Wilmington Trust, National Association, as escrow agent under each Escrow and Paying Agent Agreement, together with its successors in such capacity.

“ Escrow and Paying Agent Agreement ” means, with respect to any Class of Certificates, the Escrow and Paying Agent Agreement pertaining to such Class, dated as of the date hereof, between the Escrow Agent, Goldman, Sachs & Co., as representative of the several Underwriters, the Trustee for such Class and the Paying Agent, as the same may be amended, modified or supplemented from time to time in accordance with the terms thereof.

“ Escrow Receipts ” has the meaning assigned to such term in the Escrow and Paying Agent Agreement for the Class A Trust or Class B Trust, as applicable.

“ Excess Liquidity Obligations ” means, with respect to an Indenture, the amounts payable under clauses (a), (b), (c), (d), (e) and (f) of Section 2.14 of such Indenture.

“ Expected Distributions ” means, with respect to the Certificates of any Trust on any Current Distribution Date, the difference between (A) the Pool Balance of such Certificates as of the immediately preceding Distribution Date (or, if the Current Distribution Date is the first Distribution Date after the date of issuance of such Certificate, the original aggregate face amount of the Certificates of such Trust) and (B) the Pool Balance of such Certificates as of the Current Distribution Date calculated on the basis that (i) the principal of any Non-Performing Equipment Notes held in such Trust has been paid in full and such payments have been distributed to the holders of such Certificates, (ii) the principal of any Performing Equipment Notes held in such Trust has been paid when due (whether at stated maturity or upon prepayment or purchase or otherwise, but without giving effect to any Acceleration of Performing Equipment Notes) and such payments have been distributed to the holders of such Certificates and (iii) the principal of any Equipment Notes formerly held in such Trust that have been sold pursuant to the terms hereof has been paid in full and such payments have been distributed to the holders of such Certificates, but without giving effect to any reduction in the Pool Balance as a result of any distribution attributable to Deposits occurring after the immediately preceding Distribution Date (or, if the Current Distribution Date is the first Distribution Date, occurring after the initial issuance of the Certificates of such Trust). For purposes of calculating Expected Distributions with respect to the Certificates of any Trust, any Premium paid on the Equipment Notes held in such Trust which has not been distributed to the Certificateholders of such Trust (other than such Premium or a portion thereof applied to the payment of interest in respect of the Certificates of such Trust or the reduction of the Pool Balance of such Trust) shall be added to the amount of such Expected Distributions.

“ Expiry Date ” with respect to any Liquidity Facility, has the meaning specified in such Liquidity Facility.

“ Fee Letter ” means any fee letter entered into among the Subordination Agent, American and a Liquidity Provider and “ Fee Letters ” has a correlative meaning.

“ Final Distributions ” means, with respect to the Certificates of any Trust on any Distribution Date, the sum of (x) the aggregate amount of all accrued and unpaid interest on such Certificates (excluding interest, if any, payable with respect to the Deposits relating to such Trust) and (y) the Pool Balance of such Certificates as of the immediately preceding Distribution Date (less the amount of Deposits for such Class of Certificates as of such preceding Distribution Date other than any portion of such Deposits thereafter used to acquire Equipment Notes

pursuant to the Note Purchase Agreement). For purposes of calculating Final Distributions with respect to the Certificates of any Trust, any Premium paid on the Equipment Notes held in such Trust which has not been distributed to the Certificateholders of such Trust (other than such Premium or a portion thereof applied to the payment of interest on the Certificates of such Trust or the reduction of the Pool Balance of such Trust) shall be added to the amount of such Final Distributions.

“ Final Drawing ” has the meaning specified in Section 3.05(i) .

“ Final Legal Distribution Date ” means (i) with respect to the Class A Certificates, April 1, 2028 and (ii) with respect to the Class B Certificates, April 1, 2024.

“ Fitch ” means Fitch Ratings Inc.

“ Fractional Undivided Interest ” means the fractional undivided interest in a Trust that is represented by a Certificate relating to such Trust.

“ Indenture ” means each of the Indenture and Security Agreements entered into by the Loan Trustee and American pursuant to the Note Purchase Agreement, in each case, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

“ Indenture Event of Default ” means, with respect to any Indenture, any Event of Default (as such term is defined in such Indenture) thereunder.

“ Interest Drawing ” has the meaning specified in Section 3.05(a) .

“ Interest Payment Date ” means, with respect to any Liquidity Facility, each date on which interest is due and payable under such Liquidity Facility on a Downgrade Drawing, Non-Extension Drawing, Special Termination Drawing or Final Drawing thereunder, other than any such date on which interest is due and payable under such Liquidity Facility only on an Applied Provider Advance (as such term is defined in such Liquidity Facility).