Document:

<PAGE>
                                                                     EXHIBIT 4.2

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                         TRUST SUPPLEMENT NO. 2001-2A-1

                           Dated as of October 4, 2001

                                     between

                             AMERICAN AIRLINES, INC.

                                       and

               STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT,
                              NATIONAL ASSOCIATION,

                                   as Trustee,

                                       to

                          PASS THROUGH TRUST AGREEMENT
                           Dated as of October 4, 2001

                 American Airlines Pass Through Trust 2001-2A-1
                            6.978% American Airlines
                           Pass Through Certificates,
                                Series 2001-2A-1

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<PAGE>
                                TABLE OF CONTENTS

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                                                      ARTICLE I

                                                     DEFINITIONS

Section 1.01.     Definitions...............................................................................       2

                                                     ARTICLE II

                                              THE TRUST AND THE TRUSTEE

Section 2.01.     Declaration of Trust......................................................................       8
Section 2.02.     Activities of Trust.......................................................................       8

                                                     ARTICLE III

                                             THE Applicable CERTIFICATES

Section 3.01.     The Certificates..........................................................................       9
Section 3.02.     Delivery of Documents; Delivery Dates.....................................................      11
Section 3.03.     Withdrawal of Deposits....................................................................      12
Section 3.04.     The Trustee...............................................................................      12
Section 3.05.     Representations and Warranties of the Trustee.............................................      12
Section 3.06.     Trustee Liens.............................................................................      13

                                                     ARTICLE IV

                                                       DEFAULT

Section 4.01.     Purchase Rights of Certificateholders.....................................................      13

                                                      ARTICLE V

                                                  THE CERTIFICATES

Section 5.01.     Additions to Article III of the Basic Agreement...........................................      17
Section 5.02.     Restrictive Legends.......................................................................      19
Section 5.03.     Transfer and Exchange.....................................................................      21
Section 5.04.     Book-entry Provisions for U.S. Global Certificate and Offshore Global Certificates........      22
Section 5.05.     Special Transfer Provisions...............................................................      23

                                                     ARTICLE VI

                                          STATEMENTS TO CERTIFICATEHOLDERS

Section 6.01.     Statements to Applicable Certificateholders...............................................      26

                                                     ARTICLE VII

                                    ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS
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Section 7.01.     Supplemental Agreements Without Consent of Applicable Certificateholders..................      27
Section 7.02.     Supplemental Agreements with Consent of Applicable Certificateholders.....................      27

                                                    ARTICLE VIII

                                              MISCELLANEOUS PROVISIONS

Section 8.01.     Final Termination Date....................................................................      28
Section 8.02.     Basic Agreement Ratified..................................................................      28
Section 8.03.     Governing Law.............................................................................      28
Section 8.04.     Counterparts..............................................................................      28
Section 8.05.     Intention of Parties......................................................................      28

EXHIBIT A             Form of Certificate...................................................................     A-1
EXHIBIT B             Form of Certificate for Unlegended Certificates.......................................     B-1
EXHIBIT C             Form of Certificate to be Delivered in Connection with Transfers
                          Pursuant to Regulation S..........................................................     C-1
EXHIBIT D             Form of Certificate to be Delivered in Connection with Transfers to
                          Non-QIB Accredited Investors......................................................     D-1
EXHIBIT E             DTC Letter of Representations.........................................................     E-1
SCHEDULE I            Aggregate Equipment Note Principal Payments...........................................     I-1
SCHEDULE II-A         Prefunded Aircraft-Equipment Notes, Principal
                          Amounts and Maturities............................................................  II-A-1
SCHEDULE II-B         Non-Prefunded Aircraft-Equipment Notes,
                          Principal Amounts and Maturities..................................................  II-B-1
SCHEDULE III          Aircraft..............................................................................   III-1
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                                       ii
<PAGE>
                         TRUST SUPPLEMENT NO. 2001-2A-1

      This TRUST SUPPLEMENT NO. 2001-2A-1, dated as of October 4, 2001 (the
"Trust Supplement"), between American Airlines, Inc., a Delaware corporation,
and State Street Bank and Trust Company of Connecticut, National Association, a
national banking association, as Trustee, to the Pass Through Trust Agreement,
dated as of October 4, 2001, between the Company (such term and other
capitalized terms used herein without definition being defined as provided in
Section 1.01) and the Trustee (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 or concurrently herewith been executed and delivered;

      WHEREAS, the Company is the owner of 20 aircraft described in Schedule III
and is the owner of or has obtained commitments from Boeing for the delivery of
11 additional aircraft described in Schedule III (such 11 additional aircraft or
any aircraft substituted therefor in accordance with the term of the Note
Purchase Agreement, being the "Prefunded Aircraft" and collectively with such 20
other aircraft being the "Aircraft");

      WHEREAS, pursuant to each Indenture, the Company will issue, on a recourse
basis, the Equipment Notes, which Equipment Notes are to be secured by a
security interest in all right, title and interest of the Company in and to the
Aircraft and certain other property described in such Indenture;

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

      WHEREAS, all Certificates to be issued by the Applicable Trust will
evidence Fractional Undivided Interests in the Applicable 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, the Trustee and the Placement Agents have
contemporaneously herewith entered into an Escrow Agreement with the Escrow
Paying Agent pursuant to which the Placement Agents have delivered to the Escrow
Agent a portion of the proceeds from the sale of the Applicable 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
Equipment Notes as the relevant Prefunded Aircraft are delivered by Boeing under
the Purchase Agreement from time to time, as provided in the Note Purchase
Agreement;
<PAGE>
      WHEREAS, the Escrow Agent on behalf of the Applicable Certificateholders
has contemporaneously herewith entered into the Deposit Agreement with the
Depositary under which the Deposit referred to therein will be made and from
which it will withdraw funds to allow the Trustee to purchase Equipment Notes in
respect of the Prefunded Aircraft from time to time on or prior to the Cut-off
Date;

      WHEREAS, pursuant to the terms and conditions of the Basic Agreement, as
supplemented by this Trust Supplement, the Note Purchase Agreement and the
Participation Agreements, the Trustee on behalf of the Applicable Trust shall on
the date hereof or in the case of the Prefunded Aircraft, on each Funding Date
with respect to a Prefunded Aircraft (using funds withdrawn under the Escrow
Agreement) purchase one or more Equipment Notes issued by the Company pursuant
to the Indenture relating to the relevant Aircraft, having the identical
interest rate as, and final maturity dates not later than the final Regular
Distribution Date of, the Applicable Certificates issued hereunder and shall
hold such Equipment Notes in trust for the benefit of the Applicable
Certificateholders;

      WHEREAS, pursuant to the terms and conditions of the Intercreditor
Agreement referred to in Section 3.01(i) hereof (the "Intercreditor Agreement"),
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, upon the occurrence of a Registration Event, the Basic Agreement
as supplemented by this Trust Supplement shall become subject to the provisions
of the Trust Indenture Act of 1939, as amended, 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 shall have the
respective meanings set forth, and shall be construed and interpreted in the
manner described, in the Basic Agreement or, to the extent not defined therein,
in the Intercreditor Agreement.

            Account: has the meaning specified in the Deposit Agreement.

            Agent Members: has the meaning specified in Section 5.04 of this
      Trust Supplement.

                                       2
<PAGE>
            Agreement: means the Basic Agreement as supplemented by this Trust
      Supplement.

            Applicable Certificateholder: means the Person in whose name an
      Applicable Certificate is registered on the Register for the Applicable
      Certificates.

            Applicable Certificates: has the meaning specified in Section 3.01
      of this Trust Supplement.

            Applicable Date: has the meaning specified in Section 3.02 of this
      Trust Supplement.

            Applicable Participation Agreement: has the meaning specified in
      Section 3.02(b) of this Trust Supplement.

            Applicable Trust: has the meaning specified in Section 2.01 of this
      Trust Supplement.

            Basic Agreement: has the meaning specified in the first paragraph of
      this Trust Supplement.

            Boeing: means The Boeing Company.

            Clearstream: means Clearstream Banking, societe anonyme.

            Class E Certificateholder: has the meaning specified in Section
      4.01(a) of this Trust Supplement.

            Cut-off Date: has the meaning specified in Section 3.01(b) of this
      Trust Supplement.

            Delivery Notice: has the meaning specified in Section 1(b) of the
      Note Purchase Agreement.

            Delivery Period Termination Date: means March 15, 2002.

            Deposit: has the meaning specified in Section 2.1 of the Deposit
      Agreement.

            Deposit Agreement: means the Deposit Agreement dated as of October
      4, 2001 relating to the Applicable 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 WestLB.

            DTC: means The Depository Trust Company, and any successor entity to
      DTC as depositary for the Applicable Certificates.

                                       3
<PAGE>
            Escrow Agent: means State Street Bank and Trust Company, a
      Massachusetts trust company or any replacement or successor therefor
      appointed in accordance with the Escrow Agreement.

            Escrow Agreement: means the Escrow and Paying Agent Agreement dated
      as of October 4, 2001 relating to the Applicable Certificates, among the
      Escrow Agent, the Escrow Paying Agent, the Trustee and the Placement
      Agents, as the same may be amended, supplemented or otherwise modified
      from time to time in accordance with its terms.

            Escrow Paying Agent: means the Person acting as paying agent under
      the Escrow Agreement.

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

            Euroclear: means Euroclear Bank S.A./N.V., as the operator of the
      Euroclear System.

            Exchange Certificates: means the certificates substantially in the
      form of Exhibit A attached hereto issued in exchange for the Initial
      Certificates pursuant to the Registration Rights Agreement and
      authenticated hereunder.

            Exchange Offer Registration Statement: has the meaning specified in
      the Registration Rights Agreement.

            Final Withdrawal: has the meaning specified in Section 1.02 of the
      Escrow Agreement.

            Final Withdrawal Date: has the meaning specified in Section 1.02 of
      the Escrow Agreement.

            Funding Date: has the meaning specified in Section 1(b)(i) of the
      Note Purchase Agreement.

            Global Certificates: has the meaning specified in Section 5.01(c) of
      this Trust Supplement.

            Global Exchange Certificate: has the meaning specified in Section
      5.01(e) of this Trust Supplement.

            Initial Certificates: has the meaning specified in Section 3.01 of
      this Trust Supplement.

            Institutional Accredited Investor: means an institutional investor
      that is an "accredited investor" within the meaning set forth in Rule
      501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act.

                                       4
<PAGE>
            Liquidity Provider: means WestLB, or any replacements or successors
      therefor appointed in accordance with the Intercreditor Agreement.

            Non-U.S. Person: means a Person that is not a "U.S. Person," as
      defined in Regulation S.

            Note Documents: means the Equipment Notes with respect to the
      Applicable Certificates and, with respect to any such Equipment Note, the
      related Indenture and Participation Agreement.

            Note Purchase Agreement: means the Note Purchase Agreement dated as
      of October 4, 2001 among the Trustee, the Other Trustees, the Company, the
      Escrow Agent, the Escrow Paying Agent and the Subordination Agent,
      providing for, among other things, the purchase of Equipment Notes in
      respect of Prefunded Aircraft by the Trustee on behalf of the Applicable
      Trust, as the same may be amended, supplemented or otherwise modified from
      time to time, in accordance with its terms.

            Notice of Purchase Withdrawal: has the meaning specified in Section
      2.3(b) of the Deposit Agreement.

            Offering Memorandum: means the offering memorandum dated September
      25, 2001 relating to the offering of the Initial Certificates.

            Offshore Certificates Exchange Date: has the meaning specified in
      Section 5.01(c) of this Trust Supplement.

            Offshore Global Certificates: has the meaning specified in Section
      5.01(c) of this Trust Supplement.

            Offshore Physical Certificates: has the meaning specified in Section
      5.01(d) of this Trust Supplement.

            Other Agreements: means (i) the Basic Agreement as supplemented by
      Trust Supplement No. 2001-2A-2 dated as of the date hereof relating to
      American Airlines Pass Through Trust 2001-2A-2; (ii) the Basic Agreement
      as supplemented by Trust Supplement No. 2001-2B dated as of the date
      hereof relating to American Airlines Pass Through Trust 2001-2B; (iii) the
      Basic Agreement as supplemented by Trust Supplement No. 2001-2C dated as
      of the date hereof relating to American Airlines Pass Through Trust
      2001-2C or, in connection with a refunding of the Class C Certificates in
      accordance with Exhibit A to the Intercreditor Agreement, as supplemented
      by the trust supplement executed in connection with the new class C
      certificates issued upon such refunding; (iv) the Basic Agreement as
      supplemented by Trust Supplement No. 2001-2D dated as of the date hereof
      relating to American Airlines Pass Through Trust 2001-2D or, in connection
      with a refunding of the Class D Certificates in accordance with Exhibit A
      to the Intercreditor Agreement, as supplemented by the trust supplement
      executed in connection with the new class D certificates issued upon such
      refunding; and (v) if Class E Certificates are issued, the Basic Agreement
      as supplemented by Trust Supplement No. 2001-2E relating to American
      Airlines Pass Through Trust 2001-2E.

                                       5
<PAGE>
            Other Trustees: means the trustees under the Other Agreements, and
      any successor or other trustee appointed as provided therein.

            Other Trusts: means the American Airlines Pass Through Trust
      2001-2A-2 created on the date hereof, the American Airlines Pass Through
      Trust 2001-2B created on the date hereof, the American Airlines Pass
      Through Trust 2001-2C created on the date hereof (or, in connection with a
      refunding of the Class C Certificates in accordance with Exhibit A to the
      Intercreditor Agreement, the trust formed in connection therewith for the
      issuance of the new class C certificates) and the American Airlines Pass
      Through Trust 2001-2D created on the date hereof (or, in connection with a
      refunding of the Class D Certificates in accordance with Exhibit A to the
      Intercreditor Agreement, the trust formed in connection therewith for the
      issuance of the new class D certificates), and, if Class E Certificates
      are issued, the American Airlines Pass Through Trust 2001-2E.

            Participation Agreement: means each Participation Agreement among
      the Company and State Street Bank and Trust Company of Connecticut,
      National Association as the Trustee, the Other Trustees, the Subordination
      Agent and the Loan Trustee and in its individual capacity, as the same may
      be amended, supplemented or otherwise modified in accordance with its
      terms.

            Permanent Offshore Global Certificate: has the meaning specified in
      Section 5.01(c) of this Trust Supplement.

            Physical Certificates: has the meaning specified in Section 5.01(d)
      of this Trust Supplement.

            Placement Agents: means, collectively, Morgan Stanley & Co.
      Incorporated, Credit Suisse First Boston Corporation, Merrill Lynch,
      Pierce, Fenner & Smith Incorporated, J.P. Morgan Securities Inc. and
      Salomon Smith Barney Inc.

            Placement Agreement: means the Placement Agreement dated as of
      September 25, 2001 among the Placement Agents and the Company, as the same
      may be amended, supplemented or otherwise modified from time to time in
      accordance with its terms.

            Pool Balance: means, as of any date, (i) the original aggregate face
      amount of the Applicable Certificates less (ii) the aggregate amount of
      all payments made in respect of such Applicable Certificates or in respect
      of the Deposit relating to the Applicable Trust other than distributions
      made in respect of interest or premium thereon or reimbursement of any
      costs or expenses incurred in connection therewith. The Pool Balance as of
      any Distribution Date shall be computed after giving effect to any special
      distribution with respect to the unused Deposit, the payment of principal,
      if any, on the Equipment Notes or other Trust Property and the
      distribution thereof to be made on that date.

            Pool Factor: means, as of any Distribution Date, the quotient
      (rounded to the seventh decimal place (and rounding 0.00000005 up))
      computed by dividing (i) the Pool Balance by (ii) the original aggregate
      face amount of the Applicable Certificates. The Pool Factor as of any
      Distribution Date shall be computed after giving effect to any special
      distribution with respect to the unused Deposit, the payment of principal,
      if any,

                                       6
<PAGE>
      on the Equipment Notes or other Trust Property and the distribution
      thereof to be made on that date.

            Prefunded Aircraft: has the meaning set forth in the recitals
      hereof.

            Private Placement Legend: has the meaning specified in Section
      5.02(a) of this Trust Supplement.

            Purchase Agreement: has the meaning specified in the Note Purchase
      Agreement.

            QIB: means a qualified institutional buyer as defined in Rule 144A.

            Registration Event: has the meaning set forth in the Registration
      Rights Agreement.

            Registration Rights Agreement: means the Registration Rights
      Agreement dated October 4, 2001 among the Placement Agents, the Trustee,
      the Other Trustees (other than the Class C Trustee and the Class D
      Trustee) and the Company, as amended, supplemented or otherwise modified
      from time to time in accordance with its terms.

            Registration Statement: has the meaning set forth in the
      Registration Rights Agreement.

            Regulation S: means Regulation S under the Securities Act or any
      successor regulation thereto.

            Rule 144A: means Rule 144A under the Securities Act or any successor
      rule thereto.

            Scheduled Delivery Date: has the meaning specified in Section 1(b)
      of the Note Purchase Agreement.

            Securities Act: means the U.S. Securities Act of 1933, as amended.

            Shelf Registration Statement: has the meaning set forth in the
      Registration Rights Agreement.

            Temporary Offshore Global Certificate: has the meaning set forth in
      Section 5.01(c) of this Trust Supplement.

            Triggering Event: has the meaning assigned to such term in the
      Intercreditor Agreement.

            Trust Property: means (i) subject to the Intercreditor Agreement,
      the Equipment Notes held as the property of the Applicable Trust, all
      monies at any time paid thereon and all monies due and to become due
      thereunder, (ii) the rights of the Applicable Trust under the Escrow
      Agreement to request the Escrow Agent to withdraw from the Account funds
      sufficient to enable the Applicable Trust to purchase Equipment Notes on
      the

                                       7
<PAGE>
      delivery of a Prefunded Aircraft, (iii) funds from time to time deposited
      in the Certificate Account and the Special Payments Account and (iv) all
      rights of the Applicable Trust and the Trustee, on behalf of the
      Applicable Trust, under the Intercreditor Agreement, the Note Purchase
      Agreement and the Liquidity Facility, including, without limitation, the
      rights of the Applicable Trust to acquire Equipment Notes under the Note
      Purchase Agreement, all rights to receive certain payments under such
      documents, and all monies paid to the Trustee on behalf of the Applicable
      Trust pursuant to the Intercreditor Agreement or the Liquidity Facility.

            Trust Supplement: has the meaning specified in the first paragraph
      of this Trust Supplement.

            U.S. Global Certificate: has the meaning specified in Section
      5.01(b) of this Trust Supplement.

            U.S. Physical Certificates: has the meaning specified in Section
      5.01(d) of this Trust Supplement.

            WestLB: means WESTDEUTSCHE LANDESBANK GIROZENTRALE, a German banking
      institution organized under the laws of the State of North
      Rhine-Westphalia, acting through its New York Branch.

                                   ARTICLE II

                            THE TRUST AND THE TRUSTEE

      Section 2.01 Declaration of Trust. The Trustee hereby declares the
creation of a Trust, designated the "American Airlines Pass Through Trust
2001-2A-1" (the "Applicable Trust"), for the benefit of the Holders of the
Applicable Certificates to be issued in respect of such Applicable Trust, and
the initial Holders of the Applicable Certificates, as grantors of such
Applicable Trust, by their respective acceptances of the Applicable
Certificates, join in the creation of such Applicable 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 2.02 of the Basic Agreement, the
Note Purchase Agreement and each Applicable Participation Agreement and the
Trustee will hold such right, title and interest for the benefit of all present
and future Holders of the Applicable Certificates, upon the trusts set forth in
the Basic Agreement and this Trust Supplement.

      Section 2.02 Activities of Trust. (a) Other than in connection with the
transactions contemplated by this Agreement or the Note Documents, the Trustee
on behalf of the Applicable Trust shall not (i) borrow money or issue debt or
(ii) merge with another entity, reorganize, liquidate or sell its assets.

      (b) The activities of the Trustee engaged in on behalf of the Applicable
Trust shall be limited to those activities authorized by this Agreement or the
Note Documents.

                                       8
<PAGE>
                                  ARTICLE III

                           THE APPLICABLE CERTIFICATES

      Section 3.01 The Certificates. There is hereby created a series of
Certificates to be issued under this Agreement designated as "6.978% American
Airlines Pass Through Certificates, Series 2001-2A-1" (the "Initial
Certificates"). The exchange certificates which may be issued and offered in
exchange for the Initial Certificates pursuant to the Registration Rights
Agreement shall be known as the "6.978% American Airlines Exchange Pass Through
Certificates Series 2001-2A-1" (the "Exchange Certificates"). The Initial
Certificates and the Exchange Certificates are hereinafter defined as the
"Applicable Certificates". Each Applicable Certificate represents a fractional
undivided interest in the Applicable Trust created hereby. The Applicable
Certificates shall be the only instruments evidencing a fractional undivided
interest in the Applicable Trust.

      The terms and conditions applicable to the Applicable Certificates and the
Applicable Trust are as follows:

            (a) The aggregate face amount of the Applicable Certificates that
      may be authenticated and delivered under this Agreement (except for
      Applicable Certificates authenticated and delivered upon registration of
      transfer of, or in exchange for, or in lieu of, other Applicable
      Certificates pursuant to Sections 3.03, 3.04, 3.05 and 3.06 of the Basic
      Agreement or upon exchange of the Initial Certificates for Exchange
      Certificates) is $322,404,000.

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

            (c) The Regular Distribution Dates with respect to any payment of
      Scheduled Payments means April 1 and October 1 of each year, commencing on
      April 1, 2002, until payment of all of the Scheduled Payments to be made
      under the Equipment Notes has been made. The principal amount of the
      Equipment Notes to be held by the Applicable Trust is scheduled for
      payment on April 1 and October 1 in certain years, beginning on April 1,
      2002 and ending on April 1, 2011 as set out in Schedules I.

            (d) The Special Distribution Dates with respect to the Applicable
      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 Applicable
      Certificate. In any event, any transfer or exchange of any Applicable
      Certificate shall also effect a transfer or exchange of the related Escrow
      Receipt. Prior to April 1, 2002, no transfer or exchange of any Applicable
      Certificate shall be permitted unless the corresponding Escrow Receipt is
      attached thereto and also is so transferred or exchanged. By acceptance of
      any Applicable Certificate to which an Escrow Receipt is attached, each

                                       9
<PAGE>
      Holder of such an Applicable Certificate acknowledges and accepts the
      restrictions on transfer of the Escrow Receipt set forth herein and in the
      Escrow Agreement.

            (f) The Applicable Certificates shall be in the form attached hereto
      as Exhibit A. Subject to Section 5.01(d) of this Trust Supplement, the
      Applicable Certificates shall be Book-Entry Certificates and shall be
      subject to the conditions set forth in the Letter of Representations
      between the Company and The Depository Trust Company, as initial Clearing
      Agency, attached hereto as Exhibit E.

            (g) The proceeds of the Applicable Certificates in the amount of
      $93,900,361 shall be deposited in the Account and shall be used in
      accordance with the Escrow Agreement and the Deposit Agreement for the
      purchase of Equipment Notes described in Schedule II-A relating to
      Prefunded Aircraft. The remaining proceeds of the Applicable Certificates
      in the amount of $228,503,639 shall be used to acquire on the date hereof
      the Equipment Notes described in Schedule II-B relating to all Aircraft
      other than Prefunded Aircraft.

            (h) Any Person acquiring or accepting an Applicable Certificate or
      an interest therein will, by such acquisition or acceptance, be deemed to
      represent and warrant to the Company, the Loan Trustees and the Trustee
      that either (i) no assets of an employee benefit plan subject to Title I
      of ERISA, or of an employee benefit plan or an individual retirement
      account subject to Section 4975 of the Internal Revenue Code of 1986, as
      amended (the "Code"), or any trust established under such plan or account,
      have been used to purchase Applicable Certificates or an interest therein
      or (ii) the purchase and holding of Applicable Certificates or interests
      therein by such Person is exempt from the prohibited transaction
      restrictions of ERISA and the Code pursuant to one or more prohibited
      transaction statutory or administrative exemptions.

            (i) The Applicable Certificates will have the benefit of the Deposit
      Agreement and the Escrow Agreement and will be subject to the following
      Intercreditor Agreement (and to the extent the terms of the Intercreditor
      Agreement (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 October 4,
      2001, among State Street Bank and Trust Company of Connecticut, National
      Association, as Trustee under each Trust (as defined therein), WestLB, as
      Class A-1 Liquidity Provider, Class A-2 Liquidity Provider, Class B
      Liquidity Provider and Class C Liquidity Provider, and State Street Bank
      and Trust Company of Connecticut, National Association, as Subordination
      Agent thereunder. Potential Purchasers shall have the rights upon the
      occurrence of a Triggering Event set forth in Article IV hereof. The
      Trustee and, by acceptance of any Applicable 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 Applicable Certificates will have the benefit of the
      following Liquidity Facility: that certain Revolving Credit Agreement,
      dated as of October 4, 2001, between State Street Bank and Trust Company
      of Connecticut, National Association, as

                                       10
<PAGE>
      Subordination Agent under the Intercreditor Agreement, as agent and
      trustee for the Applicable Trust, and WestLB.

            (k) The Company may at any time purchase any of the Applicable
      Certificates at any price in the open market and may hold such Applicable
      Certificates to maturity.

      Section 3.02. Delivery of Documents; Delivery Dates. (a) The Trustee is
hereby directed (i) to execute and deliver, on or prior to the Issuance Date,
the Intercreditor Agreement, the Escrow Agreement, each Participation Agreement
relating to an Aircraft that is not a Prefunded Aircraft, and the Note Purchase
Agreement, each in the form delivered to the Trustee by the Company, and (ii)
subject to the respective terms thereof, to perform its obligations thereunder.
On the Issuance Date, the Trustee shall duly execute, deliver, authenticate,
issue and sell Applicable Certificates in authorized denominations equaling in
the aggregate the amount set forth, with respect to the Applicable Trust, in
Schedule I to the Placement Agreement, which Applicable Certificates shall
evidence the entire ownership interest in the Applicable Trust and which amount
equals the aggregate principal amount of Equipment Notes purchased by the
Trustee on the date hereof and to be purchased by the Trustee pursuant to the
Note Purchase Agreement. Except as provided in Sections 3.03, 3.04, 3.05 and
3.06 of the Basic Agreement or upon exchange of the Initial Certificates for
Exchange Certificates, the Trustee shall not execute, authenticate or deliver
Applicable Certificates in excess of the aggregate amount specified in this
paragraph. The provisions of this Section 3.02(a) supersede and replace the
first sentence of Section 3.02(a) of the Basic Agreement, with respect to the
Applicable Trust.

      (b) On or after the Issuance Date, the Company may deliver from time to
time to the Trustee a Delivery Notice relating to one or more Prefunded
Aircraft. After receipt of a Delivery Notice and in any case no later than one
Business Day prior to the Scheduled Delivery Date or Funding Date to which such
Delivery Notice relates (the "Applicable Date"), the Trustee shall (as and when
specified in the Delivery Notice) instruct the Escrow Agent to provide a Notice
of Purchase Withdrawal to the Depositary requesting (A) the withdrawal of all or
a portion of the Deposit on the Applicable Date in accordance with and to the
extent permitted by the terms of the Escrow Agreement and the Deposit Agreement
and (B) the payment of all, or a portion, of such Deposit in an amount equal in
the aggregate to the purchase price of the Equipment Notes relating to such
Prefunded Aircraft as specified in such Notice of Purchase Withdrawal, all as
shall be described in the Delivery Notice. The Trustee shall (as and when
specified in such Delivery Notice), subject to the conditions set forth in
Section 2 of the Note Purchase Agreement, enter into and perform its obligations
under the Participation Agreement specified in such Delivery 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 Date,
the Trustee receives a notice of postponement pursuant to Section 1(d) of the
Note Purchase Agreement, then the Trustee shall give the Depositary (with a copy
to the Escrow Agent) a notice of cancellation of such Notice of Purchase
Withdrawal relating to such Deposit on such Applicable Date. Upon satisfaction
(including satisfaction by waiver, if any) of the conditions specified in the
Note Purchase Agreement and the Applicable Participation Agreement, the Trustee
shall purchase the applicable Equipment Notes with the proceeds of the
withdrawals of all or a portion of the Deposit made on the Applicable Date in
accordance with the terms of the Deposit Agreement and the Escrow Agreement. The
purchase price of such Equipment Notes shall equal

                                       11
<PAGE>
the principal amount of such Equipment Notes. Amounts withdrawn from such
Deposit in excess of the purchase price of the Equipment Notes or to the extent
not applied on the Applicable Date to the purchase price of the Equipment Notes,
shall be re-deposited by the Trustee with the Depositary on the Applicable Date
in accordance with the terms of the Deposit Agreement. The provisions of this
Section 3.02(b) supersede and replace the provisions of Section 2.02 of the
Basic Agreement with respect to the Equipment Notes relating to the Prefunded
Aircraft to be acquired by the Applicable Trust, and all provisions of the Basic
Agreement relating to Postponed Notes and Section 2.02 of the Basic Agreement
shall not apply to the Equipment Notes related to the Prefunded Aircraft to be
acquired by the Applicable Trust.

      Section 3.03. Withdrawal of Deposits. If any portion of the Deposit
remains outstanding on the Business Day next succeeding the Cut-off Date, the
Trustee shall give the Escrow Agent notice that the Trustee's obligation to
purchase Equipment Notes under the Note Purchase Agreement has terminated and
instruct the Escrow Agent to provide the notice of Final Withdrawal to the
Depositary substantially in the form of Exhibit B to the Deposit Agreement.

      Section 3.04. The Trustee. Subject to Section 3.05 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 Deposit Agreement, the Note Purchase
Agreement, the Participation Agreements 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, except that the Trustee hereby represents and warrants that each of
this Trust Supplement, the Basic Agreement, each Applicable Certificate, the
Intercreditor Agreement, the Note Purchase Agreement, each Participation
Agreement 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.

      Section 3.05. 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 Note Purchase Agreement 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 Note Purchase Agreement 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
      Note Purchase Agreement 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 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 articles of association or by-laws 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

                                       12
<PAGE>
      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
      Note Purchase Agreement 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 banking and corporate trust activities of the
      Trustee; and

            (d) this Trust Supplement, the Intercreditor Agreement, the Escrow
      Agreement, the Note Purchase Agreement 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 3.06. 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 Note Purchase Agreement.

                                   ARTICLE IV

                                     DEFAULT

      Section 4.01. Purchase Rights of Certificateholders. (a) By acceptance of
its Applicable Certificate, each Applicable Certificateholder agrees that at any
time after the occurrence and during the continuation of a Triggering Event,

            (i) if the Class A-2 Trustee is then the Controlling Party, each
      Applicable Certificateholder shall have the right to purchase, for the
      purchase price set forth in the Class A-2 Trust Agreement, all, but not
      less than all, of the Class A-2 Certificates upon ten days' prior written
      notice to the Class A-2 Trustee and each other Applicable
      Certificateholder, provided that (A) if prior to the end of such ten-day
      period any other Applicable Certificateholder notifies such purchasing
      Applicable Certificateholder that such other Applicable Certificateholder
      wants to participate in such purchase, then such other Applicable
      Certificateholder may join with the purchasing Applicable
      Certificateholder to purchase all, but not less than all, of the Class A-2
      Certificates pro

                                       13
<PAGE>
      rata based on the Fractional Undivided Interest in the Applicable Trust
      held by each such Applicable Certificateholder and (B) if prior to the end
      of such ten-day period any other Applicable Certificateholder fails to
      notify the purchasing Applicable Certificateholder of such other
      Applicable Certificateholder's desire to participate in such a purchase,
      then such other Applicable Certificateholder shall lose its right to
      purchase the Class A-2 Certificates pursuant to this Section 4.01(a)(i);
      and

            (ii) if the Trustee is then the Controlling Party, each Class A-2
      Certificateholder shall have the right to purchase all, but not less than
      all, of the Applicable Certificates upon ten days' prior written notice to
      the Trustee and each other Class A-2 Certificateholder, provided that (A)
      if prior to the end of such ten-day period any other Class A-2
      Certificateholder notifies such purchasing Class A-2 Certificateholder
      that such other Class A-2 Certificateholder wants to participate in such
      purchase, then such other Class A-2 Certificateholder may join with the
      purchasing Class A-2 Certificateholder to purchase all, but not less than
      all, of the Applicable Certificates pro rata based on the Fractional
      Undivided Interest in the Class A-2 Trust held by each such Class A-2
      Certificateholder and (B) if prior to the end of such ten-day period any
      other Class A-2 Certificateholder fails to notify the purchasing Class A-2
      Certificateholder of such other Class A-2 Certificateholder's desire to
      participate in such a purchase, then such other Class A-2
      Certificateholder shall lose its right to purchase the Applicable
      Certificates pursuant to this Section 4.01(a)(ii); and

            (iii) each Class B Certificateholder shall have the right (which
      shall not expire upon any purchase of the Applicable Certificates or the
      Class A-2 Certificates pursuant to clause (i) or (ii) above) to purchase
      all, but not less than all, of the Applicable Certificates and the Class
      A-2 Certificates upon ten days' prior written notice to the Trustee, the
      Class A-2 Trustee and each other Class B Certificateholder, provided that
      (A) if prior to the end of such ten-day period any other Class B
      Certificateholder notifies such purchasing Class B Certificateholder that
      such other Class B Certificateholder wants to participate in such
      purchase, then such other Class B Certificateholder may join with the
      purchasing Class B Certificateholder to purchase all, but not less than
      all, of the Applicable Certificates and the Class A-2 Certificates pro
      rata based on the Fractional Undivided Interest in the Class B Trust held
      by each such Class B Certificateholder and (B) if prior to the end of such
      ten-day period any other Class B Certificateholder fails to notify the
      purchasing Class B Certificateholder of such other Class B
      Certificateholder's desire to participate in such a purchase, then such
      other Class B Certificateholder shall lose its right to purchase the
      Applicable Certificates and the Class A-2 Certificates pursuant to this
      Section 4.01(a)(iii); and

            (iv) each Class C Certificateholder (other than the Company or any
      Affiliate of the Company) shall have the right (which shall not expire
      upon any purchase of the Applicable Certificates or the Class A-2
      Certificates pursuant to clause (i), (ii) or (iii) above) to purchase all,
      but not less than all, of the Applicable Certificates, the Class A-2
      Certificates and the Class B Certificates upon ten days' prior written
      notice to the Trustee, the Class A-2 Trustee, the Class B Trustee and each
      other Class C Certificateholder, provided that (A) if prior to the end of
      such ten-day period any other Class C Certificateholder (other than the
      Company or any Affiliate of the Company)

                                       14
<PAGE>
      notifies such purchasing Class C Certificateholder that such other Class C
      Certificateholder wants to participate in such purchase, then such other
      Class C Certificateholder may join with the purchasing Class C
      Certificateholder to purchase all, but not less than all, of the
      Applicable Certificates, the Class A-2 Certificates and the Class B
      Certificates pro rata based on the Fractional Undivided Interest in the
      Class C Trust held by each such Class C Certificateholder and (B) if prior
      to the end of such ten-day period any other Class C Certificateholder
      fails to notify the purchasing Class C Certificateholder of such other
      Class C Certificateholder's desire to participate in such a purchase, then
      such other Class C Certificateholder shall lose its right to purchase the
      Applicable Certificates, the Class A-2 Certificates and the Class B
      Certificates pursuant to this Section 4.01(a)(iv); and

            (v) each Class D Certificateholder (other than the Company or any
      Affiliate of the Company) shall have the right (which shall not expire
      upon any purchase of the Applicable Certificates, the Class A-2
      Certificates or the Class B Certificates pursuant to clause (i), (ii),
      (iii) or (iv) above) to purchase all, but not less than all, of the
      Applicable Certificates, the Class A-2 Certificates, the Class B
      Certificates and the Class C Certificates upon ten days' prior written
      notice to the Trustee, the Class A-2 Trustee, the Class B Trustee, the
      Class C Trustee and each other Class D Certificateholder, provided that
      (A) if prior to the end of such ten-day period any other Class D
      Certificateholder (other than the Company or any Affiliate of the Company)
      notifies such purchasing Class D Certificateholder that such other Class D
      Certificateholder wants to participate in such purchase, then such other
      Class D Certificateholder may join with the purchasing Class D
      Certificateholder to purchase all, but not less than all, of the
      Applicable Certificates, the Class A-2, the Class B Certificates, and the
      Class C Certificates pro rata based on the Fractional Undivided Interest
      in the Class D Trust held by each such Class D Certificateholder and (B)
      if prior to the end of such ten-day period any other Class D
      Certificateholder fails to notify the purchasing Class D Certificateholder
      of such other Class D Certificateholder's desire to participate in such a
      purchase, then such other Class D Certificateholder shall lose its right
      to purchase the Applicable Certificates, the Class A-2 Certificates, the
      Class B Certificates and the Class C Certificates pursuant to this Section
      4.01(a)(v); and

            (vi) each Class E Certificateholder (if Class E Certificates are
      issued) other than the Company or any Affiliate of the Company shall have
      the right (which shall not expire upon any purchase of the Applicable
      Certificates, the Class A-2 Certificates, the Class B Certificates or the
      Class C Certificates pursuant to clause (i), (ii), (iii), (iv) or (v)
      above) to purchase all, but not less than all, of the Applicable
      Certificates, the Class A-2 Certificates, the Class B Certificates, the
      Class C Certificates and the Class D Certificates upon ten days' prior
      written notice to the Trustee, the Class A-2 Trustee, the Class B Trustee,
      the Class C Trustee, the Class D Trustee and each other Class E
      Certificateholder, provided that (A) if prior to the end of such ten-day
      period any other Class E Certificateholder (other than the Company or any
      Affiliate of the Company) notifies such purchasing Class E
      Certificateholder that such other Class E Certificateholder wants to
      participate in such purchase, then such other Class E Certificateholder
      may join with the purchasing Class E Certificateholder to purchase all,
      but not less than all, of the Applicable Certificates, the Class A-2
      Certificates, the Class B

                                       15
<PAGE>
      Certificates, the Class C Certificates and the Class D Certificates pro
      rata based on the Fractional Undivided Interest in the Class E Trust held
      by each such Class E Certificateholder and (B) if prior to the end of such
      ten-day period any other Class E Certificateholder fails to notify the
      purchasing Class E Certificateholder of such other Class E
      Certificateholder's desire to participate in such a purchase, then such
      other Class E Certificateholder shall lose its right to purchase the
      Applicable Certificates, the Class A-2 Certificates, the Class B
      Certificates, the Class C Certificates and the Class D Certificates
      pursuant to this Section 4.01(a)(vi).

      The purchase price with respect to the Applicable Certificates shall be
equal to the Pool Balance of the Applicable Certificates, together with accrued
and unpaid interest in respect thereof to the date of such purchase, without
premium, but including any other amounts then due and payable to the Applicable
Certificateholders under this Agreement, the Intercreditor Agreement, the Escrow
Agreement or any Note Document or on or in respect of the Applicable
Certificates; 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 Applicable
Certificateholders as of such record date) or (y) a 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 Applicable
Certificateholders as of such Record Date); provided further that no such
purchase of Applicable Certificates pursuant to clause (iii), (iv), (v) or (vi)
above 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 and the Intercreditor Agreement, all of
the Applicable Certificates, the Class A-2 Certificates, the Class B
Certificates, the Class C Certificates and the Class D Certificates that are
senior to the securities held by such purchaser(s). Each payment of the purchase
price of the Applicable Certificates referred to in the first sentence hereof
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 4.01(a). Each Applicable
Certificateholder agrees by its acceptance of its Certificate that it will, upon
payment from such Class A-2 Certificateholder(s), Class B Certificateholder(s),
Class C Certificateholder(s), Class D Certificateholder(s) or Class E
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 Applicable Certificateholder in the Agreement, the Escrow Agreement, the
Deposit Agreement, the Intercreditor Agreement, the Liquidity Facility, the Note
Purchase Agreement, the Note Documents and all Applicable Certificates and
Escrow Receipts held by such Applicable 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 Applicable Certificateholder's obligations
under the Agreement, the Escrow Agreement, the Deposit Agreement, the
Intercreditor Agreement, the Liquidity Facility, the Note Purchase Agreement,
the Note Documents and all such Applicable Certificates and Escrow Receipts. The
Applicable

                                       16
<PAGE>
Certificates will be deemed to be purchased on the date payment of the purchase
price is made notwithstanding the failure of any Applicable Certificateholder to
deliver any Applicable Certificate and, upon such a purchase, (i) the only
rights of the Applicable Certificateholders will be to deliver the Applicable
Certificates and (ii) if the purchaser(s) shall so request, each such Applicable
Certificateholder will comply with all the provisions of Section 3.04 of the
Basic Agreement to enable new Applicable Certificates to be issued to the
purchaser(s) in such denominations as it shall request. All charges and expenses
in connection with the issuance of any such new Applicable Certificates shall be
borne by the purchaser(s) thereof.

      As used in this Section 4.01(a), the terms "Class A-2 Certificate", "Class
A-2 Certificateholder", "Class A-2 Trust", "Class A-2 Trust Agreement", "Class
A-2 Trustee", "Class B Certificate", "Class B Certificateholder", "Class B
Trust", "Class B Trustee", "Class C Certificate", "Class C Certificateholder",
"Class C Trust", "Class C Trustee", "Class D Certificate", "Class D
Certificateholder", "Class D Trust", "Class D Trustee", "Class E Certificate",
Class E Certificateholder", "Class E Trust" and "Class E Trustee" shall have the
respective meanings assigned to such terms in the Intercreditor Agreement.

      (b) This Section 4.01 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
4.01 may not be amended in any manner without the consent of each Class A-2
Certificateholder, Class B Certificateholder, Class C Certificateholder, Class D
Certificateholder, or Class E Certificateholder, if any, that would be adversely
affected thereby.

                                   ARTICLE V

                                THE CERTIFICATES

      Section 5.01. Additions to Article III of the Basic Agreement. In addition
to the provisions of Article III of the Basic Agreement, the following
provisions shall apply to the Applicable Trust:

            (a) The Initial Certificates will be issued in minimum denominations
      of $100,000 or integral multiples of $1,000 in excess thereof. The
      Exchange Certificates will be issued in denominations of $1,000 or
      integral multiples thereof. Each Exchange Certificate shall be dated the
      date of its authentication;

            (b) Initial Certificates offered and sold in reliance on Rule 144A
      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 set forth as Exhibit A hereto (the "U.S. Global
      Certificate"), duly executed and authenticated by the Trustee as
      hereinafter provided. The U.S. Global Certificate will be registered in
      the name of a nominee for DTC and deposited with the Trustee, as custodian
      for DTC. The aggregate principal amount of the U.S. 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, as hereinafter provided;

                                       17
<PAGE>
            (c) Initial Certificates offered and sold in offshore transactions
      in reliance on Regulation S shall be issued initially in the form of one
      or more temporary global Certificates in definitive, fully registered form
      without interest coupons, substantially in the form set forth as Exhibit A
      hereto (the "Temporary Offshore Global Certificate") duly executed and
      authenticated by the Trustee as hereinafter provided. The Temporary
      Offshore Global Certificate will be registered in the name of a nominee of
      DTC for credit to the account of the Agent Members acting as depositaries
      for Euroclear and Clearstream and deposited with the Trustee as custodian
      for DTC. At any time following November 12, 2001 (the "Offshore
      Certificates Exchange Date"), upon receipt by the Trustee of a certificate
      substantially in the form of Exhibit B hereto, a single permanent global
      Certificate in fully registered form substantially in the form set forth
      in Exhibit A (the "Permanent Offshore Global Certificate"; and together
      with the Temporary Offshore Global Certificate, the "Offshore Global
      Certificates"), duly executed and authenticated by the Trustee as
      hereinafter provided, shall be registered in the name of a nominee for DTC
      and deposited with the Trustee, as custodian for DTC, and the Registrar
      shall reflect on its books and records the date of such transfer and a
      decrease in the principal amount of any Temporary Offshore Global
      Certificate in an amount equal to the principal amount of the beneficial
      interest in such Temporary Offshore Global Certificate transferred. The
      U.S. Global Certificate and the Offshore Global Certificates are sometimes
      referred to as the "Global Certificates";

            (d) Initial Certificates offered and sold to Institutional
      Accredited Investors shall be issued in the form of permanent certificated
      Certificates in registered form in substantially the form set forth as
      Exhibit A hereto (the "U.S. Physical Certificates"). Certificates issued
      pursuant to Section 5.04(b) in exchange for interests in any Offshore
      Global Certificate shall be in the form of permanent certificated
      Certificates in fully registered form substantially in the form set forth
      in Exhibit A (the "Offshore Physical Certificates"). The Offshore Physical
      Certificates and U.S. Physical Certificates are sometimes collectively
      herein referred to as the "Physical Certificates";

            (e) The Exchange Certificates shall be issued in the form of one or
      more global Certificates substantially in the form of Exhibit A hereto
      (each, a "Global Exchange Certificate"), except that (i) the Private
      Placement Legend (hereinafter defined) shall be omitted and (ii) such
      Exchange Certificates shall contain such appropriate insertions,
      omissions, substitutions and other variations from the form set forth in
      Exhibit A hereto relating to the nature of the Exchange Certificates as
      the Responsible Officer of the Trustee executing such Exchange
      Certificates on behalf of the Trust may determine, as evidenced by such
      officer's execution on behalf of the Trust of such Exchange Certificates.
      Such Global Exchange Certificates shall be in registered form and be
      registered in the name of DTC and deposited with the Trustee, at its
      Corporate Trust Office, as custodian for DTC. The aggregate principal
      amount of any Global Exchange Certificate may from time to time be
      increased or decreased by adjustments made on the records of the Trustee,
      as custodian for DTC for such Global Exchange Certificate, which
      adjustments shall be conclusive as to the aggregate principal amount of
      any such Global Exchange Certificate. Subject to clause (i) and (ii) of
      the first sentence of this Section 5.01(e), the terms hereof applicable to
      U.S. Global Certificates and/or Global Certificates shall apply to the
      Global Exchange Certificates, mutatis mutandis;

                                       18
<PAGE>
            (f) The definitive Applicable Certificates 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 Applicable
      Certificates, as evidenced by their execution of such Applicable
      Certificates.

      Section 5.02. Restrictive Legends. (a) Subject to Section 5.05, unless and
until (i) an Initial Certificate is sold under an effective Shelf Registration
Statement or (ii) an Initial Certificate is exchanged for an Exchange
Certificate pursuant to an effective Exchange Offer Registration Statement, in
each case as provided for in the Registration Rights Agreement, each Global
Certificate (other than the Permanent Offshore Global Certificate) and each U.S.
Physical Certificate shall bear the following legend (the "Private Placement
Legend") on the face thereof:

      [THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF
      1933, AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS, AND,
      ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR
      FOR THE ACCOUNT OR BENEFIT OF, ANY PERSONS EXCEPT AS SET FORTH IN THE
      FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS
      THAT (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A
      UNDER THE SECURITIES ACT), (B) IT IS AN INSTITUTIONAL "ACCREDITED
      INVESTOR" (AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) UNDER THE
      SECURITIES ACT) (AN "INSTITUTIONAL ACCREDITED INVESTOR") OR (C) IT IS NOT
      A U.S. PERSON AND IS ACQUIRING THIS CERTIFICATE IN AN OFFSHORE TRANSACTION
      IN COMPLIANCE WITH REGULATION S UNDER THE SECURITIES ACT; (2) AGREES THAT
      IT WILL NOT, PRIOR TO EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES
      OF THE CERTIFICATES UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY
      SUCCESSOR PROVISION) RESELL OR OTHERWISE TRANSFER THIS CERTIFICATE EXCEPT
      (A) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER
      THE SECURITIES ACT, (B) INSIDE THE UNITED STATES TO AN INSTITUTIONAL
      ACCREDITED INVESTOR ACQUIRING $100,000 OR MORE AGGREGATE PRINCIPAL AMOUNT
      OF SUCH CERTIFICATE, THAT, PRIOR TO SUCH TRANSFER, FURNISHES TO THE
      TRUSTEE A SIGNED LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS
      RELATING TO THE RESTRICTIONS ON TRANSFER OF THIS CERTIFICATE (THE FORM OF
      WHICH LETTER CAN BE OBTAINED FROM THE TRUSTEE), (C) OUTSIDE THE UNITED
      STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE
      SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED
      BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), (E) PURSUANT TO A
      REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER

                                       19
<PAGE>
      THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF
      SUCH TRANSFER), OR (F) TO AMERICAN AIRLINES, INC. OR ANY SUBSIDIARY
      THEREOF; (3) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER PURSUANT TO
      CLAUSE 2(E) ABOVE), IT WILL FURNISH TO THE TRUSTEE SUCH CERTIFICATIONS,
      LEGAL OPINIONS OR OTHER INFORMATION AS THE TRUSTEE MAY REASONABLY REQUIRE
      TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM,
      OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE
      SECURITIES ACT AND (4) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM
      THIS CERTIFICATE IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF
      THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS CERTIFICATE PRIOR TO
      THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE
      CERTIFICATES UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
      PROVISION), THE HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE
      REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS
      CERTIFICATE TO THE TRUSTEE. IF THE PROPOSED TRANSFEREE IS AN INSTITUTIONAL
      ACCREDITED INVESTOR OR IS A PURCHASER WHO IS NOT A U.S. PERSON, THE HOLDER
      MUST, PRIOR TO SUCH TRANSFER, FURNISH TO THE TRUSTEE AND IF REQUESTED,
      AMERICAN AIRLINES, INC., SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER
      INFORMATION AS IT MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS
      BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT
      TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THIS LEGEND WILL
      BE REMOVED UPON THE EARLIER OF THE TRANSFER OF THE CERTIFICATES PURSUANT
      TO CLAUSE 2(E) ABOVE OR UPON ANY TRANSFER OF THE CERTIFICATES UNDER RULE
      144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION). AS USED
      HEREIN, THE TERMS "OFFSHORE TRANSACTION", "UNITED STATES" AND "U.S.
      PERSON" HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S UNDER THE
      SECURITIES ACT. THE PASS THROUGH TRUST AGREEMENT CONTAINS A PROVISION
      REQUIRING THE TRUSTEE TO REFUSE TO REGISTER ANY TRANSFER OF THIS
      CERTIFICATE IN VIOLATION OF THE FOREGOING RESTRICTIONS.](1)

      (b) Each Global Certificate shall also bear the following legend on the
face thereof:

----------
(1)   Not to be included on the face of the Permanent Offshore Global
      Certificate.

                                       20
<PAGE>
      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.

      TRANSFERS OF THIS GLOBAL CERTIFICATE SHALL BE LIMITED TO TRANSFERS IN
      WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR
      SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL
      CERTIFICATE SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE
      RESTRICTIONS SET FORTH IN SECTIONS 5.04 AND 5.05 OF THE TRUST SUPPLEMENT
      TO THE PASS THROUGH TRUST AGREEMENT REFERRED TO HEREIN.

      (c)   Each Certificate shall bear the following legend on the face
            thereof:

      BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS
      OF AN EMPLOYEE BENEFIT PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT
      INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR OF A PLAN SUBJECT TO
      SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
      "CODE"), HAVE BEEN USED TO PURCHASE THIS CERTIFICATE OR (B) THE PURCHASE
      AND HOLDING OF THIS CERTIFICATE ARE EXEMPT FROM THE PROHIBITED TRANSACTION
      RESTRICTIONS OF ERISA AND THE CODE PURSUANT TO ONE OR MORE PROHIBITED
      TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS.

      Section 5.03. Transfer and Exchange. An Applicable Certificateholder may
transfer an Applicable Certificate by written application to the Registrar
stating the name of the proposed transferee and otherwise complying with the
terms of this Agreement, including providing a written certificate or other
evidence of compliance with any restrictions on transfer. No such transfer shall
be effected until, and such transferee shall succeed to the rights of an
Applicable Certificateholder only upon, final acceptance and registration of the
transfer by the Registrar in the Register. Prior to the registration of any
transfer by an Applicable Certificateholder as provided herein, the Trustee
shall treat the person in whose name the Applicable Certificate is registered as
the owner thereof for all purposes, and the Trustee shall not be affected by
notice to

                                       21
<PAGE>
the contrary. Furthermore, DTC shall, by acceptance of a Global Certificate,
agree that transfers of beneficial interests in such Global Certificate may be
effected only through a book-entry system maintained by DTC (or its agent), and
that ownership of a beneficial interest in the Certificate shall be required to
be reflected in a book entry. When Applicable Certificates are presented to the
Registrar with a request to register the transfer or to exchange them for an
equal face amount of Applicable Certificates of other authorized denominations,
the Registrar shall register the transfer or make the exchange as requested if
its requirements for such transactions are met. To permit registrations of
transfers and exchanges in accordance with the terms, conditions and
restrictions hereof, the Trustee shall execute and authenticate Applicable
Certificates at the Registrar's request.

      Section 5.04. Book-entry Provisions for U.S. Global Certificate and
Offshore Global Certificates. (a) Members of, or participants in, DTC ("Agent
Members") 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 Agent
Members, the operation of customary practices governing the exercise of the
rights of a holder of any Applicable Certificate. Upon the issuance of any
Global Certificate, the Registrar or its duly appointed agent shall record a
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 or Offshore Global Certificate in whole, but not in
part, to nominees of DTC, its successor or such successor's nominees. Beneficial
interests in the U.S. Global Certificate and any Offshore Global Certificate may
be transferred in accordance with the rules and procedures of DTC and the
provisions of Section 5.05. Beneficial interests in the U.S. Global Certificate
or an Offshore Global Certificate shall be delivered to all beneficial owners in
the form of U.S. Physical Certificates or Offshore Physical Certificates, as the
case may be, if (i) DTC notifies the Trustee that it is unwilling or unable to
continue as depositary for the U.S. Global Certificate or such Offshore Global
Certificate, as the case may be, and a successor depositary is not appointed by
the Trustee within 90 days of such notice or (ii) an Event of Default has
occurred and Applicable Certificateholders with fractional undivided interests
aggregating not less than a majority in interest in the Applicable Trust advise
the Trustee, the Company and DTC through Agent Members in writing that the
continuation of a book-entry system through DTC (or a successor thereto) is no
longer in the Applicable Certificateholders' best interests.

      (c) Any beneficial interest in one of the Global Certificates that is
transferred to a Person who takes delivery in the form of an interest in the
other Global Certificate will, upon such transfer, cease to be an interest in
such Global Certificate and become an interest in the other Global Certificate
and, accordingly, will thereafter be subject to all transfer restrictions, if
any, and other procedures applicable to beneficial interests in such other
Global Certificate for as long as it remains such an interest.

      (d) In connection with the transfer of the entire U.S. Global Certificate
or an entire Offshore Global Certificate to the beneficial owners thereof
pursuant to paragraph (b) of this

                                       22
<PAGE>
Section 5.04, such U.S. Global Certificate or Offshore Global Certificate, as
the case may be, shall be deemed to be surrendered to the Trustee for
cancellation, and the Trustee shall execute, authenticate and deliver, to each
beneficial owner identified by DTC in exchange for its beneficial interest in
such U.S. Global Certificate or Offshore Global Certificate, as the case may be,
an equal aggregate principal amount of U.S. Physical Certificates or Offshore
Physical Certificates, as the case may be, of authorized denominations.

      (e) Any U.S. Physical Certificate delivered in exchange for an interest in
the U.S. Global Certificate pursuant to paragraph (b) of this Section 5.04
shall, except as otherwise provided by paragraph (f) of Section 5.05, bear the
Private Placement Legend.

      (f) Any Offshore Physical Certificate delivered in exchange for an
interest in an Offshore Global Certificate pursuant to paragraph (b) of this
Section shall, except as otherwise provided by paragraph (f) of Section 5.05,
bear the applicable legend regarding transfer restrictions set forth in Section
5.02(a).

      (g) The registered holder of the U.S. Global Certificate or any Offshore
Global Certificate may grant proxies and otherwise authorize any Person,
including Agent Members and Persons that may hold interests through Agent
Members, to take any action which a Holder is entitled to take under this
Agreement or the Applicable Certificates.

      Section 5.05. Special Transfer Provisions. Unless and until (i) an Initial
Certificate is sold under an effective Shelf Registration Statement, or (ii) an
Initial Certificate is exchanged for an Exchange Certificate pursuant to an
effective Exchange Offer Registration Statement, in each case pursuant to the
Registration Rights Agreement, the following provisions shall apply to such
Initial Certificates:

            (a) Transfers to Non-QIB Institutional Accredited Investors. The
      following provisions shall apply with respect to the registration of any
      proposed transfer of an Applicable Certificate to any Institutional
      Accredited Investor which is not a QIB (excluding transfers to or by
      Non-U.S. Persons):

                  (i) The Registrar shall register the transfer of any
            Applicable Certificate, whether or not such Applicable Certificate
            bears the Private Placement Legend, if (x) the requested transfer is
            after the time period referred to in Rule 144(k) under the
            Securities Act as in effect with respect to such transfer or (y) the
            proposed transferee has delivered to the Registrar a letter
            substantially in the form of Exhibit D hereto and the aggregate
            principal amount of the Applicable Certificates being transferred is
            at least $100,000.

                  (ii) If the proposed transferor is an Agent Member holding a
            beneficial interest in the U.S. Global Certificate, upon receipt by
            the Registrar of (x) the documents, if any, required by paragraph
            (i) and (y) instructions given in accordance with DTC's and the
            Registrar's procedures, the Registrar shall reflect on its books and
            records the date of the transfer and a decrease in the principal
            amount of such U.S. Global Certificate in an amount equal to the
            principal amount of the beneficial interest in such U.S. Global
            Certificate to be transferred,

                                       23
<PAGE>
            and the Company shall execute, and the Trustee shall authenticate
            and deliver to the transferor or at its direction, one or more U.S.
            Physical Certificates of like tenor and amount.

            (b) Transfers to QIBs. The following provisions shall apply with
      respect to the registration of any proposed transfer of an Initial
      Certificate to a QIB (excluding Non-U.S. Persons):

                  (i) If the Initial Certificate to be transferred consists of
            U.S. Physical Certificates or an interest in any Temporary Offshore
            Global Certificate, the Registrar shall register the transfer if
            such transfer is being made by a proposed transferor who has checked
            the box provided for on the form of Initial Certificate stating, or
            has otherwise advised the Trustee and the Registrar in writing, that
            the sale has been made in compliance with the provisions of Rule
            144A to a transferee who has signed the certification provided for
            on the form of Initial Certificate stating, or has otherwise advised
            the Trustee and the Registrar in writing, that it is purchasing the
            Initial Certificate for its own account or an account with respect
            to which it exercises sole investment discretion and that it, or the
            Person on whose behalf it is acting with respect to any such
            account, is a QIB within the meaning of Rule 144A, and is aware that
            the sale to it is being made in reliance on Rule 144A and
            acknowledges that it has received such information regarding the
            Trust and/or the Company as it has requested pursuant to Rule 144A
            or has determined not to request such information and that it is
            aware that the transferor is relying upon its foregoing
            representations in order to claim the exemption from registration
            provided by Rule 144A.

                  (ii) Upon receipt by the Registrar of the documents referred
            to in clause (i) above and instructions given in accordance with
            DTC's and the Registrar's procedures therefor, the Registrar shall
            reflect on its books and records the date of such transfer and an
            increase in the principal amount of the U.S. Global Certificate in
            an amount equal to the principal amount of the U.S. Physical
            Certificates or interests in the Temporary Offshore Global
            Certificate, as the case may be, being transferred, and the Trustee
            shall cancel such Physical Certificates or decrease the amount of
            such Temporary Offshore Global Certificate so transferred.

            (c) Transfers of Interests in the Permanent Offshore Global
      Certificate or Offshore Physical Certificates. The Registrar shall
      register any transfer of interests in the Permanent Offshore Global
      Certificate or Offshore Physical Certificates without requiring any
      additional certification.

            (d) Transfers to Non-U.S. Persons at any Time. The following
      provisions shall apply with respect to any registration of any transfer of
      an Initial Certificate to a Non-U.S. Person:

                  (i) Prior to the Offshore Certificates Exchange Date, the
            Registrar shall register any proposed transfer of an Initial
            Certificate to a Non-U.S. Person

                                       24
<PAGE>
            upon receipt of a certificate substantially in the form set forth as
            Exhibit C hereto from the proposed transferor.

                  (ii) On and after the Offshore Certificates Exchange Date, the
            Registrar shall register any proposed transfer to any Non-U.S.
            Person if the Initial Certificate to be transferred is a U.S.
            Physical Certificate or an interest in the U.S. Global Certificate,
            upon receipt of a certificate substantially in the form of Exhibit C
            from the proposed transferor. The Registrar shall promptly send a
            copy of such certificate to the Company.

                  (iii) (A) Upon receipt by the Registrar of (x) the documents,
            if any, required by paragraph (ii) and (y) instructions in
            accordance with DTC's and the Registrar's procedures, the Registrar
            shall reflect on its books and records the date of such transfer and
            a decrease in the principal amount of such U.S. Global Certificate
            in an amount equal to the principal amount of the beneficial
            interest in such U.S. Global Certificate to be transferred, and (B)
            upon receipt by the Registrar of instructions given in accordance
            with DTC's and the Registrar's procedures, the Registrar shall
            reflect on its books and records the date and an increase in the
            principal amount of the Offshore Global Certificate in an amount
            equal to the principal amount of the U.S. Physical Certificate or
            the U.S. Global Certificate, as the case may be, to be transferred,
            and the Trustee shall cancel the Physical Certificate, if any, so
            transferred or decrease the amount of such U.S. Global Certificate.

            (e) Private Placement Legend. Upon the transfer, exchange or
      replacement of Applicable Certificates not bearing the Private Placement
      Legend, the Registrar shall deliver Applicable Certificates that do not
      bear the Private Placement Legend. Upon the transfer, exchange or
      replacement of Applicable Certificates bearing the Private Placement
      Legend, the Registrar shall deliver only Applicable Certificates that bear
      the Private Placement Legend unless either (i) the circumstances
      contemplated by paragraph (a)(i)(x) or (e)(ii) of this Section 5.05 exist
      or (ii) there is delivered to the Registrar an Opinion of Counsel to the
      effect that neither such legend nor the related restrictions on transfer
      are required in order to maintain compliance with the provisions of the
      Securities Act.

            (f) General. By its acceptance of any Applicable Certificate bearing
      the Private Placement Legend, each Holder of such an Applicable
      Certificate acknowledges the restrictions on transfer of such Applicable
      Certificate set forth in this Agreement and agrees that it will transfer
      such Applicable Certificate only as provided in this Agreement. The
      Registrar shall not register a transfer of any Applicable Certificate
      unless such transfer complies with the restrictions on transfer of such
      Applicable Certificate set forth in this Agreement. In connection with any
      transfer of Applicable Certificates, each Applicable Certificateholder
      agrees by its acceptance of the Applicable Certificates to furnish the
      Registrar or the Trustee such certifications, legal opinions or other
      information as either of them may reasonably require to confirm that such
      transfer is being made pursuant to an exemption from, or a transaction not
      subject to, the registration requirements of the Securities Act; provided
      that the Registrar shall not be

                                       25
<PAGE>
      required to determine the sufficiency of any such certifications, legal
      opinions or other information.

      Until such time as no Applicable Certificates remain Outstanding, the
Registrar shall retain copies of all letters, notices and other written
communications received pursuant to Section 5.04 or this Section 5.05. The
Trustee, if not the Registrar at such time, shall have the right to inspect and
make copies of all such letters, notices or other written communications at any
reasonable time upon the giving of reasonable written notice to the Registrar.

                                   ARTICLE VI

                        STATEMENTS TO CERTIFICATEHOLDERS

      Section 6.01. Statements to Applicable Certificateholders. (a) On each
Distribution Date, the Trustee will include with each distribution to Applicable
Certificateholders of a Scheduled Payment or Special Payment, as the case may
be, a statement setting forth the information provided below (in the case of a
Special Payment, reflecting in part the information provided by the Escrow
Paying Agent under the Escrow Agreement). Such statement shall set forth (per
$1,000 face amount Applicable Certificate as to (ii), (iii), (iv) and (v) below)
the following information:

                  (i) the aggregate amount of funds distributed on such
            Distribution Date under the Agreement and under the Escrow
            Agreement, indicating the amount allocable to each source;

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

                  (iii) the amount of such distribution under the Agreement
            allocable to interest;

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

                  (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.

            (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 an Applicable 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 an Applicable 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 an
      Applicable Certificateholder may reasonably request as necessary for the
      purpose of such Applicable Certificateholder's preparation of its federal
      income

                                       26
<PAGE>
      tax returns. 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 Applicable Certificates.

            (c) Promptly following (i) the Delivery Period Termination Date, if
      there has been any change in the information set forth in clauses (x), (y)
      and (z) below from that set forth in page 31 of the Offering Memorandum,
      and (ii) any early redemption or purchase of, or any default in the
      payment of principal or interest in respect of, any of the Equipment Notes
      held in the Applicable Trust, or any Final Withdrawal, the Trustee shall
      furnish to Applicable 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 Equipment Notes, in
      the aggregate, held as Trust Property at the date of such notice. With
      respect to the Applicable Certificates registered in the name of a
      Clearing Agency, on the Delivery Period Termination Date, the Trustee will
      request from such Clearing Agency a securities position listing setting
      forth the names of all Clearing Agency Participants reflected on such
      Clearing Agency's books as holding interests in the Applicable
      Certificates on such date. The 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 Participant for
      forwarding to holders of interests in the Applicable Certificates.

            (d) This Section 6.01 supersedes and replaces Section 4.03 of the
      Basic Agreement, with respect to the Applicable Trust.

                                  ARTICLE VII

                  ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS

      Section 7.01. Supplemental Agreements Without Consent of Applicable
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, without the consent of any Applicable Certificateholder,
the Company may (but will not be required to), and the Trustee (subject to
Section 9.03 of the Basic Agreement) shall, at the Company's request, at any
time and from time to time, enter into one or more agreements supplemental to
the Escrow Agreement, the Note Purchase Agreement or the Deposit Agreement, (i)
for any of the purposes set forth in clauses (1) through (15) of such Section
9.01, and said clauses shall be deemed to refer to the Escrow Agreement, the
Note Purchase Agreement or the Deposit Agreement where appropriate or (ii) to
the extent necessary in connection with a refunding of the Class C Certificates
and the Class D Certificates in accordance with Exhibit A to the Intercreditor
Agreement.

      Section 7.02. Supplemental Agreements with Consent of Applicable
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

                                       27
<PAGE>
provisions to or changing in any manner or eliminating any of the provisions of
the Escrow Agreement, the Deposit Agreement or the Note Purchase Agreement or
modifying in any manner the rights and obligations of the Applicable
Certificateholders under the Escrow Agreement, the Deposit Agreement or the Note
Purchase Agreement; provided that the provisions of Section 9.02(a) of the Basic
Agreement shall be deemed to include reductions in any manner of, or delay in
the timing of, any receipt by the Applicable Certificateholders of payments upon
the Deposit.

                                  ARTICLE VIII

                            MISCELLANEOUS PROVISIONS

      Section 8.01. Final Termination Date. The respective obligations and
responsibilities of the Company and the Trustee created hereby and the
Applicable Trust created hereby shall terminate upon the distribution to all
Certificateholders of Applicable Certificates 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 the
expiration of 21 years from the death of the last survivor of the descendants of
Joseph P. Kennedy, Sr., the father of John F. Kennedy, former President of the
United States, living on the date of this Trust Supplement.

      Section 8.02. 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.

      Section 8.03. Governing Law. THIS AGREEMENT HAS BEEN DELIVERED IN THE
STATE OF NEW YORK AND THIS AGREEMENT AND THE APPLICABLE 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 8.04. Counterparts. This Trust Supplement may be executed in any
number of counterparts (and each of the parties shall not 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 shall constitute one instrument.

      Section 8.05. Intention of Parties. The parties hereto intend that the
Applicable Trust be classified for United States federal income tax purposes as
a grantor trust under Part 1E of Chapter 1J of Subtitle A of the Internal
Revenue Code of 1986, as amended, and not as a trust or association taxable as a
corporation or as a partnership. Each Applicable Certificateholder of an
Applicable Certificate, by its acceptance of its Applicable Certificate or a
beneficial interest therein, agrees to treat the Applicable 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
Applicable Trust to fail to qualify as a grantor trust for such tax

                                       28
<PAGE>
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).

                                       29
<PAGE>
      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.

                                           AMERICAN AIRLINES, INC.

                                           By:__________________________________
                                              Name:
                                              Title:

                                           STATE STREET BANK AND TRUST COMPANY
                                           OF CONNECTICUT, NATIONAL ASSOCIATION,
                                           as Trustee

                                           By:__________________________________
                                              Name:
                                              Title:
<PAGE>
                                                                    EXHIBIT A to
                                                  TRUST SUPPLEMENT NO. 2001-2A-1

                               FORM OF CERTIFICATE

REGISTERED

No. ______________

[THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933,
AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS, AND,
ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR
THE ACCOUNT OR BENEFIT OF, ANY PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING
SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT (A) IT IS A
"QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE SECURITIES
ACT), (B) IT IS AN INSTITUTIONAL "ACCREDITED INVESTOR" (AS DEFINED IN RULE
501(a)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT) (AN "INSTITUTIONAL
ACCREDITED INVESTOR") OR (C) IT IS NOT A U.S. PERSON AND IS ACQUIRING THIS
CERTIFICATE IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH REGULATION S UNDER THE
SECURITIES ACT; (2) AGREES THAT IT WILL NOT, PRIOR TO EXPIRATION OF THE HOLDING
PERIOD APPLICABLE TO SALES OF THE CERTIFICATES UNDER RULE 144(K) UNDER THE
SECURITIES ACT (OR ANY SUCCESSOR PROVISION) RESELL OR OTHERWISE TRANSFER THIS
CERTIFICATE EXCEPT (A) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH
RULE 144A UNDER THE SECURITIES ACT, (B) INSIDE THE UNITED STATES TO AN
INSTITUTIONAL ACCREDITED INVESTOR ACQUIRING $100,000 OR MORE AGGREGATE PRINCIPAL
AMOUNT OF SUCH CERTIFICATE, THAT, PRIOR TO SUCH TRANSFER, FURNISHES TO THE
TRUSTEE A SIGNED LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS
RELATING TO THE RESTRICTIONS ON TRANSFER OF THIS CERTIFICATE (THE FORM OF WHICH
LETTER CAN BE OBTAINED FROM THE TRUSTEE), (C) OUTSIDE THE UNITED STATES IN AN
OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (D)
PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
SECURITIES ACT (IF AVAILABLE), (E) PURSUANT TO A REGISTRATION STATEMENT WHICH
HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE
EFFECTIVE AT THE TIME OF SUCH TRANSFER), OR (F) TO AMERICAN AIRLINES, INC. OR
ANY SUBSIDIARY THEREOF; (3) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER
PURSUANT TO CLAUSE 2(E) ABOVE), IT WILL FURNISH TO THE TRUSTEE SUCH
CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS THE TRUSTEE MAY
REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN
EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND (4) AGREES THAT IT WILL DELIVER TO EACH
PERSON TO WHOM THIS CERTIFICATE IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE
EFFECT OF THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS CERTIFICATE PRIOR
TO THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE CERTIFICATES
UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), THE
HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING
TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE TRUSTEE. IF
THE PROPOSED TRANSFEREE IS AN INSTITUTIONAL ACCREDITED INVESTOR OR IS A
PURCHASER WHO IS NOT A U.S. PERSON, THE HOLDER MUST,

                                      A-1
<PAGE>
PRIOR TO SUCH TRANSFER, FURNISH TO THE TRUSTEE AND, IF REQUESTED, TO AMERICAN
AIRLINES, INC., SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS IT
MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO
AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT. THIS LEGEND WILL BE REMOVED UPON THE EARLIER
OF THE TRANSFER OF THE CERTIFICATES PURSUANT TO CLAUSE 2(E) ABOVE OR UPON ANY
TRANSFER OF THE CERTIFICATES UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY
SUCCESSOR PROVISION). AS USED HEREIN, THE TERMS "OFFSHORE TRANSACTION", "UNITED
STATES" AND "U.S. PERSON" HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S UNDER
THE SECURITIES ACT. THE PASS THROUGH TRUST AGREEMENT CONTAINS A PROVISION
REQUIRING THE TRUSTEE TO REFUSE TO REGISTER ANY TRANSFER OF THIS CERTIFICATE IN
VIOLATION OF THE FOREGOING RESTRICTIONS.](1)

[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.

TRANSFERS OF THIS GLOBAL CERTIFICATE SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT
NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR'S
NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL CERTIFICATE SHALL BE LIMITED TO
TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN SECTIONS 5.04
AND 5.05 OF THE TRUST SUPPLEMENT OF THE PASS THROUGH TRUST AGREEMENT REFERRED TO
HEREIN.](2)

BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF AN
EMPLOYEE BENEFIT PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR OF A PLAN SUBJECT TO SECTION 4975
OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), HAVE BEEN USED TO
PURCHASE THIS CERTIFICATE OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE
ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE
PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE
EXEMPTIONS.

----------
(1)   Not to be included on the face of the Permanent Offshore Global
      Certificate or any Exchange Certificate.

(2)   This legend to appear on Book-Entry Certificates to be deposited with the
      The Depository Trust Company.

                                      A-2
<PAGE>
                            [GLOBAL CERTIFICATE] (1)

                 AMERICAN AIRLINES PASS THROUGH TRUST 2001-2A-1

           6.978% AMERICAN AIRLINES [INITIAL] [EXCHANGE] PASS THROUGH
                         CERTIFICATE, SERIES 2001-2A-1

             Final Expected Regular Distribution Date: April 1, 2011

                        evidencing a fractional undivided interest in a 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.

Certificate                                                       CUSIP No. ____
No. ______

            $____________ Fractional Undivided Interest representing
                      % of the Trust per $1,000 face amount

      THIS CERTIFIES THAT ________, for value received, is the registered owner
of a $______ (______ dollars) Fractional Undivided Interest [(as such amount may
be increased or decreased from time to time as provided in the Agreement)](2) in
the American Airlines Pass Through Trust, Series 2001-2A-1 (the "Trust") created
by State Street Bank and Trust Company of Connecticut, National Association, as
trustee (the "Trustee"), pursuant to a Pass Through Trust Agreement, dated as of
October 4, 2001 (the "Basic Agreement"), as supplemented by Trust Supplement No.
2001-2A-1 thereto dated October 4, 2001 (collectively, the "Agreement"), between
the Trustee and American Airlines, Inc., a corporation incorporated under
Delaware law (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 "6.978% American Airlines [Initial] [Exchange] Pass Through
Certificates, Series 2001-2A-1" (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
property of the Trust (the "Trust Property") includes or will include certain
Equipment Notes and all rights of the Trust and the Trustee, on behalf of the
Trust, to receive any payments under the Intercreditor Agreement or the

----------
(1)   To be included on the face of each Global Certificate.

(2)   To be included in Global Certificates for Initial Pass Through
      Certificate.

                                      A-3
<PAGE>
Liquidity Facility. Each issue of the Equipment Notes is or will be secured by,
among other things, a security interest in 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 (a "Regular Distribution Date"),
commencing on April 1, 2002, 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
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 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 Special Distribution Date, an amount in
respect of such Special Payments on the 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 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. The Trustee shall mail notice of
each Special Payment and the Special Distribution Date therefor to the
Certificateholder of this Certificate.

      [The Holder of this Certificate is entitled to the benefits of the
Registration Rights Agreement, dated as of October 4, 2001, among the Company,
the Trustee and the Placement Agents named therein (the "Registration Rights
Agreement"). Subject to the terms of the Registration Rights Agreement, in the
event that neither the consummation of the Exchange Offer nor the declaration by
the Commission of a Shelf Registration to be effective (a "Registration Event")
occurs on or prior to the 270th day after the date of the initial issuance of
the Certificates, the interest rate per annum borne by the Certificates shall be
increased by 0.50%, from and including such 270th day, to but excluding the date
on which a Registration Event occurs. In the event that the Shelf Registration
Statement ceases to be effective at any time during the period specified by the
Registration Rights Agreement for more than 60 days, whether or not consecutive,
during any 12-month period, the interest rate per annum borne by the
Certificates shall be increased by 0.50% from the 61st day of the applicable
12-month period

                                      A-4
<PAGE>
such Shelf Registration Statement ceases to be effective until such time as the
Shelf Registration Statement again becomes effective.](3)

      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 or 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 Subordination Agent
or the Loan Trustees 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

----------
(3)   To be included only on each Initial Certificate.

                                      A-5
<PAGE>
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 $[$100,000](4) [$1000](5) 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.

      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 represent and warrant to
the Company, the Loan Trustees and the Trustee that either: (i) no assets of an
employee benefit plan subject to Title I of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA"), or of an employee benefit plan or an
individual retirement account subject to Section 4975 of the Internal Revenue
Code of 1986, as amended (the "Code"), or any trust established under such plan
or account, have been used to purchase 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 pursuant to one or more prohibited transaction statutory or administrative
exemptions.

----------
(4)   To be included only on each Initial Certificate.

(5)   To be included on each Exchange Certificate.

                                      A-6
<PAGE>
      THIS CERTIFICATE AND THE AGREEMENT 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 AND CERTIFICATEHOLDERS HEREUNDER AND THEREUNDER SHALL BE
DETERMINED IN ACCORDANCE WITH SUCH LAWS.

      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.

                                      A-7
<PAGE>
      IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

                 AMERICAN AIRLINES, PASS THROUGH TRUST 2001-2A-1

                                  By: STATE STREET BANK AND TRUST COMPANY
                                      OF CONNECTICUT, NATIONAL ASSOCIATION,
                                         as Trustee

                                  By:________________________________________
                                     Title:__________________________________
                                     Dated:__________________________________

FORM OF THE TRUSTEE'S CERTIFICATE OF
     AUTHENTICATION

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

STATE STREET BANK AND TRUST COMPANY
     OF CONNECTICUT, NATIONAL ASSOCIATION,
     as Trustee

By:________________________________________________
   Authorized Officer

                                      A-8
<PAGE>
                            [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 Company with full power of
substitution in the premises.

                     [THE FOLLOWING PROVISION TO BE INCLUDED
              ON ALL CERTIFICATES OTHER THAN EXCHANGE CERTIFICATES,
                    PERMANENT OFFSHORE GLOBAL CERTIFICATE AND
                         OFFSHORE PHYSICAL CERTIFICATES]

      In connection with any transfer of this Certificate occurring prior to the
date which is the earlier of (i) the date the shelf registration statement is
declared effective or (ii) the end of the period referred to in Rule 144(k)
under the Securities Act, the undersigned confirms that without utilizing any
general solicitation or general advertising that:

                                   [Check One]

|_| (a)     this Certificate is being transferred in compliance with the
            exemption from registration under the Securities Act of 1933, as
            amended, provided by Rule 144A thereunder.

                                       or

|_| (b)     this Certificate is being transferred other than in accordance with
            (a) above and documents are being furnished which comply with the
            conditions of transfer set forth in this Certificate and the
            Agreement.

                                      A-9
<PAGE>
If none of the foregoing boxes is checked, the Trustee or other Registrar shall
not be obligated to register this Certificate in the name of any Person other
than the Holder hereof unless and until the conditions to any such transfer of
registration set forth herein and in Section 5.05 of the Trust Supplement shall
have been satisfied.

Date:___________________          ______________________________________________
                                  NOTICE: The signature to this assignment must
                                  correspond with the name as written upon the
                                  face of the within-mentioned instrument in
                                  every particular, without alteration or any
                                  change whatsoever.

                                  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.

TO BE COMPLETED BY PURCHASER IF (a) ABOVE IS CHECKED.

      The undersigned represents and warrants that it is purchasing this
Certificate for its own account or an account with respect to which it exercises
sole investment discretion and that it and any such account is a "qualified
institutional buyer" within the meaning of Rule 144A under the Securities Act of
1933, as amended, and is aware that the sale to it is being made in reliance on
Rule 144A and acknowledges that it has received such information regarding the
Company as the undersigned has requested pursuant to Rule 144A or has determined
not to request such information and that it is aware that the transferor is
relying upon the undersigned's foregoing representations in order to claim the
exemption from registration provided by Rule 144A.

Dated:___________________

                                  ______________________________________________
                                  NOTICE: To be executed by an executive officer

                                      A-10
<PAGE>
                                                                       EXHIBIT B

                 FORM OF CERTIFICATE FOR UNLEGENDED CERTIFICATES

                                                           [DATE]

State Street Bank and Trust
Company of Connecticut, National
Association
[Address]
Attention:  [            ]

            Re:   American Airlines, 2001-2A-1 Pass Through Trust,
                  Class A-1 Pass Through Trust Certificates (the
                  "Certificates")

Dear Sirs:

      This letter relates to U.S. $__________ Fractional Undivided Interest of
Certificates represented by a Certificate (the "Legended Certificate") which
bears a legend outlining restrictions upon transfer of such Legended
Certificate. Pursuant to Section 3.01 of the Pass Through Trust Agreement dated
as of October 4, 2001 (the "Basic Agreement") between the Trustee and American
Airlines, Inc., a Delaware corporation (the "Company"), as supplemented by Trust
Supplement No. 2001-2A-1 thereto (the "Trust Supplement", and together with the
Basic Agreement, the "Agreement"), we hereby certify that we are (or we will
hold such securities on behalf of) a person outside the United States to whom
the Certificates could be transferred in accordance with Rule 904 of Regulation
S promulgated under the U.S. Securities Act of 1933, as amended. Accordingly,
you are hereby requested to exchange the legended certificate for an unlegended
certificate representing an identical principal amount of Certificates, all in
the manner provided for in the Agreement.

      You and the Company are entitled to rely upon this letter and are
irrevocably authorized to produce this letter or a copy hereof to any interested
party in any administrative or legal proceedings or official inquiry with
respect to the matters covered hereby. Terms used in this certificate have the
meanings set forth in Regulation S.

                                           Very truly yours,
                                           [Name of Certificateholder]

                                               By:______________________________
                                                  Authorized Signature

                                      B-1
<PAGE>
                                                                       EXHIBIT C

                FORM OF CERTIFICATE TO BE DELIVERED IN CONNECTION
                     WITH TRANSFERS PURSUANT TO REGULATION S

                                                            [DATE]

State Street Bank and Trust
Company of Connecticut, National
Association
[Address]
Attention:  [              ]

            Re:   American Airlines 2001-2A-1 Pass Through Trust (the
                  "Trust"), 6.978% American Airlines Pass Through
                  Trust Certificates Series 2001-2A-1 (the "Certificates")

Sirs:

      In connection with our proposed sale of $_______ Fractional Undivided
Interest of the Certificates, we confirm that such sale has been effected
pursuant to and in accordance with Regulation S under the Securities Act of
1933, as amended, and, accordingly, we represent that:

            (1) the offer of the Certificates was not made to a person in the
United States;

            (2) either (a) at the time the buy order was originated, the
transferee was outside the United States or we and any person acting on our
behalf reasonably believed that the transferee was outside the United States or
(b) the transaction was executed in, on or through the facilities of a
designated off-shore securities market and neither we nor any person acting on
our behalf knows that the transaction has been pre-arranged with a buyer in the
United States;

            (3) no directed selling efforts have been made in the United States
in contravention of the requirements of Rule 903(b) or Rule 904(b) of Regulation
S, as applicable; and

            (4) the transaction is not part of a plan or scheme to evade the
registration requirements of the Securities Act.

      In addition, if the sale is made during a restricted period and the
provisions of Rule 903(c)(3) or Rule 904(c)(1) of Regulation S are applicable
thereto, we confirm that such sale has been made in accordance with the
applicable provisions of Rule 903(c)(3) or Rule 904(c)(1), as the case may be.

                                       C-1
<PAGE>
      You and American Airlines, Inc. are entitled to rely upon this letter and
are irrevocably authorized to produce this letter or a copy hereof to any
interested party in any administrative or legal proceedings or official inquiry
with respect to the matters covered hereby. Terms used in this certificate have
the meanings set forth in Regulation S.

                                     Very truly yours,
                                     [Name of Transferor]

                                         By:____________________________________
                                            Authorized Signature

                                      C-2
<PAGE>
                                                                       EXHIBIT D

                            FORM OF CERTIFICATE TO BE
                          DELIVERED IN CONNECTION WITH
                    TRANSFERS TO NON-QIB ACCREDITED INVESTORS

Morgan Stanley & Co. Incorporated         American Airlines, Inc.
1585 Broadway                             4333 Amon Carter Boulevard
New York, New York 10036                  Fort Worth, Texas 76155

Merrill Lynch, Pierce, Fenner & Smith     State Street Bank and Trust Company of
     Incorporated                             Connecticut, National Association,
North Tower                               as Pass Through Trustee
World Financial Center                    255 Asylum Street, Goodwin Square
New York, New York 10281                  Hartford, Connecticut 06103
[        ]

[        ]

Ladies and Gentlemen:

      In connection with our proposed purchase of 6.978% American Airlines, Inc.
Class A-1 Pass Through Certificates, Series 2001-2 (the "Certificates") we
confirm that:

      (h) We have received a copy of the Offering Memorandum (the "Offering
Memorandum"), relating to the Certificates and such other information as we deem
necessary in order to make our investment decision. We acknowledge that we have
read and agree to the matters stated in the section entitled "Transfer
Restrictions" of such Offering Memorandum. We acknowledge that neither American
Airlines, Inc. (the "Company") nor any Placement Agent, nor any person
representing the Company or any Placement Agent, has made any representation
with respect to the offer or sale of any Certificates.

      (i) We understand that any subsequent transfer of the Certificates is
subject to certain restrictions and conditions set forth in the Pass Through
Trust Agreement between the Company and State Street Bank and Trust Company of
Connecticut, National Association (the "Trustee") relating to the Certificates,
and we agree to be bound by, and not to resell, pledge or otherwise transfer the
Certificates except in compliance with, such restrictions and conditions and the
Securities Act of 1933, as amended (the "Securities Act").

      (j) We are purchasing Certificates having an aggregate principal amount of
not less than $100,000 and each account (if any) for which we are purchasing
Certificates is purchasing Certificates having an aggregate principal amount of
not less than $100,000.

                                      D-1
<PAGE>
      (k) We understand that the Certificates have not been registered under the
Securities Act, that the Certificates are being sold to us in a transaction that
is exempt from the registration requirements of the Securities Act and that the
Certificates may not be offered or resold except as permitted in the following
sentence. We agree, on our own behalf and on behalf of any accounts for which we
are acting as hereinafter stated, that, if we should sell any Certificates
within the applicable time period referred to in Rule 144(k) of the Securities
Act, we will do so only (A) to the Company or a subsidiary thereof, (B) in
accordance with Rule 144A under the Securities Act to a "qualified institutional
buyer" (as defined therein), (C) inside the United States to an Institutional
Accredited Investor (as defined below) acquiring $100,000 or more aggregate
principal amount of such Certificates that, prior to such transfer, furnishes to
the Trustee a signed letter containing certain representations and agreements
relating to the restrictions on transfer of the Certificates (the form of which
letter can be obtained from the Trustee), (D) outside the United States in
accordance with Rule 904 of Regulation S under the Securities Act, (E) pursuant
to the exemption from registration provided by Rule 144 under the Securities Act
or (F) pursuant to a registration statement which has been declared effective
under the Securities Act (and which continues to be effective at the time of
such transfer), and we further agree to provide any person purchasing any of the
Certificates from us a notice advising such purchaser that resales of the
Certificates are restricted as stated herein.

      (l) We understand that, on any proposed resale of any Certificates, we
will be required to furnish to the Company and to the Trustee such certificates,
legal opinions and other information as the Company and the Trustee may
reasonably require to confirm that the proposed sale complies with the foregoing
restrictions. We further understand that the Certificates purchased by us will
bear a legend to the foregoing effect.

      (m) We are an institutional "accredited investor" (as defined in Rule
501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act)
("Institutional Accredited Investor") and have such knowledge and experience in
financial and business matters as to be capable of evaluating the merits and
risks of our investment in the Certificates, and we and any accounts for which
we are acting are each able to bear the economic risk of our or their
investments.

      (n) We are acquiring the Certificates purchased by us for our own account
or for one or more accounts (each of which is an Institutional Accredited
Investor) as to each of which we exercise sole investment discretion.

                                      D-2
<PAGE>
      You are entitled to rely upon this letter and are irrevocably authorized
to produce this letter or a copy hereof to any interested party in any
administrative or legal proceeding or official inquiry with respect to the
matters covered hereby.

                                               Very truly yours,

                                               By:______________________________
                                                  Name:
                                                  Title:
Securities to be Purchased:
$        principal amount

                                      D-3
<PAGE>
                                                                    EXHIBIT E to
                                                  TRUST SUPPLEMENT NO. 2001-2A-1

                         [DTC Letter of Representations]

                                      E-1
<PAGE>
                                                                   SCHEDULE I to
                                                  TRUST SUPPLEMENT NO. 2001-2A-1

                   AGGREGATE EQUIPMENT NOTE PRINCIPAL PAYMENTS

<TABLE>
<S>                                            <C>
                    April 1, 2002              $        888,191.00
                    October 1, 2002                  45,336,934.00
                    April 1, 2003                       888,191.00
                    October 1, 2003                  41,910,615.00
                    April 1, 2004                       888,191.00
                    October 1, 2004                  38,519,183.00
                    April 1, 2005                       888,191.00
                    October 1, 2005                  31,663,630.00
                    April 1, 2006                       888,191.00
                    October 1, 2006                  30,812,336.00
                    April 1, 2007                       888,191.00
                    October 1, 2007                  28,281,018.00
                    April 1, 2008                       888,191.00
                    October 1, 2008                  26,445,663.00
                    April 1, 2009                     3,076,643.00
                    October 1, 2009                  26,127,127.00
                    April 1, 2010                    12,389,272.00
                    October 1, 2010                  20,422,923.00
                    April 1, 2011                    11,201,319.00
</TABLE>

                                      I-1
<PAGE>
                                                                SCHEDULE II-A to
                                                   TRUST SUPPLEMENT NO. 2001-A-1

                               PREFUNDED AIRCRAFT

                       EQUIPMENT NOTES, PRINCIPAL AMOUNTS
                                 AND MATURITIES

<TABLE>
<CAPTION>
 Expected Aircraft
Registration Number               Equipment Notes                       Principal Amount         Maturity
-------------------               ---------------                       ----------------         --------
<S>                       <C>                                  <C>                           <C>
N193AN                    Series 2001-2A-1 Equipment Note                $    6,724,215      April 1, 2011
N194AA                    Series 2001-2A-1 Equipment Note                     6,724,215      April 1, 2011
N195AN                    Series 2001-2A-1 Equipment Note                     5,925,099      April 1, 2011
N196AA                    Series 2001-2A-1 Equipment Note                     5,925,099      April 1, 2011
N197AN                    Series 2001-2A-1 Equipment Note                     5,994,451      April 1, 2011
N198AA                    Series 2001-2A-1 Equipment Note                     6,002,445      April 1, 2011
N199AN                    Series 2001-2A-1 Equipment Note                     5,966,892      April 1, 2011
N175AN                    Series 2001-2A-1 Equipment Note                     5,966,892      April 1, 2011
N757AN                    Series 2001-2A-1 Equipment Note                    14,917,470      April 1, 2011
N758AN                    Series 2001-2A-1 Equipment Note                    14,892,175      April 1, 2011
N759AN                    Series 2001-2A-1 Equipment Note                    14,861,408      April 1, 2011
                                                               Total:     $  93,900,361
</TABLE>

                                     II-A-1
<PAGE>
                                                                SCHEDULE II-B to
                                                  TRUST SUPPLEMENT NO. 2001-2A-1

                             NON-PREFUNDED AIRCRAFT

                       EQUIPMENT NOTES, PRINCIPAL AMOUNTS
                                 AND MATURITIES

<TABLE>
<CAPTION>
      Aircraft                                                                Principal
Registration Number               Equipment Notes                               Amount            Maturity
-------------------               ---------------                               ------            --------
<S>                      <C>                                  <C>                              <C>
N965AN                   Series 2001-2A-1 Equipment Note                $         6,011,683    April 1, 2011
N966AN                   Series 2001-2A-1 Equipment Note                          6,014,113    April 1, 2011
N185AN                   Series 2001-2A-1 Equipment Note                          7,195,038    April 1, 2011
N186AN                   Series 2001-2A-1 Equipment Note                          7,196,254    April 1, 2011
N187AN                   Series 2001-2A-1 Equipment Note                          7,198,688    April 1, 2011
N188AN                   Series 2001-2A-1 Equipment Note                          7,234,336    April 1, 2011
N189AN                   Series 2001-2A-1 Equipment Note                          6,669,039    April 1, 2011
N190AA                   Series 2001-2A-1 Equipment Note                          6,669,039    April 1, 2011
N191AN                   Series 2001-2A-1 Equipment Note                          6,701,604    April 1, 2011
N192AN                   Series 2001-2A-1 Equipment Note                          6,706,476    April 1, 2011
N797AN                   Series 2001-2A-1 Equipment Note                         15,244,025    April 1, 2011
N798AN                   Series 2001-2A-1 Equipment Note                         16,699,740    April 1, 2011
N799AN                   Series 2001-2A-1 Equipment Note                         16,727,864    April 1, 2011
N750AN                   Series 2001-2A-1 Equipment Note                         16,735,164    April 1, 2011
N751AN                   Series 2001-2A-1 Equipment Note                         16,420,974    April 1, 2011
N752AN                   Series 2001-2A-1 Equipment Note                         16,348,950    April 1, 2011
N753AN                   Series 2001-2A-1 Equipment Note                         16,383,018    April 1, 2011
N754AN                   Series 2001-2A-1 Equipment Note                         16,386,907    April 1, 2011
N755AN                   Series 2001-2A-1 Equipment Note                         14,991,682    April 1, 2011
N756AM                   Series 2001-2A-1 Equipment Note                         14,969,045    April 1, 2011
                                                              Total:     $      228,503,639
</TABLE>

                                     II-B-1
<PAGE>
                                                                 SCHEDULE III to
                                                  TRUST SUPPLEMENT NO. 2001-2A-1

                             NON-PREFUNDED AIRCRAFT

<TABLE>
<CAPTION>
                                                                Registration
Aircraft Type                                                      Number
-------------                                                      ------
<S>                                                             <C>
Boeing 737-823                                                    N965AN
Boeing 737-823                                                    N966AN
Boeing 757-223ER                                                  N185AN
Boeing 757-223ER                                                  N186AN
Boeing 757-223ER                                                  N187AN
Boeing 757-223ER                                                  N188AN
Boeing 757-223ER                                                  N189AN
Boeing 757-223ER                                                  N190AA
Boeing 757-223ER                                                  N191AN
Boeing 757-223ER                                                  N192AN
Boeing 777-223ER                                                  N797AN
Boeing 777-223ER                                                  N798AN
Boeing 777-223ER                                                  N799AN
Boeing 777-223ER                                                  N750AN
Boeing 777-223ER                                                  N751AN
Boeing 777-223ER                                                  N752AN
Boeing 777-223ER                                                  N753AN
Boeing 777-223ER                                                  N754AN
Boeing 777-223ER                                                  N755AN
Boeing 777-223ER                                                  N756AM
</TABLE>

                               PREFUNDED AIRCRAFT

<TABLE>
<CAPTION>
                                                                  Expected
                                                                Registration
Aircraft Type                                                      Number
-------------                                                      ------
<S>                                                             <C>
Boeing 757-223ER                                                  N193AN
Boeing 757-223ER                                                  N194AA
Boeing 757-223                                                    N195AN
Boeing 757-223                                                    N196AA
Boeing 757-223                                                    N197AN
Boeing 757-223                                                    N198AA
Boeing 757-223                                                    N199AN
Boeing 757-223                                                    N175AN
Boeing 777-223ER                                                  N757AN
Boeing 777-223ER                                                  N758AN
Boeing 777-223ER                                                  N759AN
</TABLE>

                                      III-1<PAGE>
                                                                     EXHIBIT 4.4

                               REFUNDING AMENDMENT
                          Dated as of October 26, 2001
                                       to
                         TRUST SUPPLEMENT NO. 2001-2A-1
                           Dated as of October 4, 2001

                                     between

                             AMERICAN AIRLINES, INC.

                                       and

               STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT,
                              NATIONAL ASSOCIATION,

                                   as Trustee,

                                       to

                          PASS THROUGH TRUST AGREEMENT
                           Dated as of October 4, 2001

                 American Airlines Pass Through Trust 2001-2A-1
                            6.978% American Airlines
                           Pass Through Certificates,
                                Series 2001-2A-1
<PAGE>
                               REFUNDING AMENDMENT

            This REFUNDING AMENDMENT, dated as of October 26, 2001 (the
"Refunding Amendment"), between American Airlines, Inc., a Delaware corporation,
and State Street Bank and Trust Company of Connecticut, National Association, a
national banking association, as Trustee, to the Pass Through Trust Agreement,
dated as of October 4, 2001, as supplemented by Trust Supplement No. 2001-2A-1
thereto dated as of October 4, 2001 (as supplemented, the "Pass Through
Agreement", capitalized terms used herein without definition having the meanings
specified therein).

                              W I T N E S S E T H:

            WHEREAS, the parties hereto have previously entered into that
certain Trust Supplement No. 2001-2A-1 dated as of October 4, 2001 (the "Trust
Supplement No. 2001-2A-1");

            WHEREAS, as contemplated by Exhibit A to the Intercreditor
Agreement, American has, among other things:

      (i)   exercised its option to prepay on October 26, 2001 the original
            series C equipment notes;
      (ii)  issued new Series C Equipment Notes;
      (iii) entered into a Trust Supplement providing for the issuance of new
            Class C Certificates; and
      (iv)  arranged for WestLB to be the Liquidity Provider for the new Class C
            Trust; and

            WHEREAS, the parties are entering into this Refunding Amendment to
Trust Supplement No. 2001-2A-1 to make the necessary revisions in connection
with the refunding of the class C certificates;

            NOW, THEREFORE, in consideration of the mutual agreements herein
contained, and of other good and valuable consideration, the parties agree as
follows:

            SECTION 1. Definitions

            (a) Except as otherwise defined herein, terms used in this Refunding
Amendment have the meaning defined in the Pass Through Agreement.

            (b) The following definition contained in the Preamble to Trust
Supplement No. 2001-2A-1 is amended to read as follows:

            "Intercreditor Agreement" means the Intercreditor Agreement, dated
as of October 4, 2001, among State Street Bank and Trust Company of Connecticut,
National Association, as Trustee under each Trust (as defined therein), WestLB,
as Class A-1 Liquidity Provider, Class A-2 Liquidity Provider, Class B Liquidity
Provider and Class C Liquidity

                                       2
<PAGE>
Provider, and State Street Bank and Trust Company of Connecticut, National
Association, as Subordination Agent thereunder, as amended by the Refunding
Amendment thereto dated as of October 26, 2001.

            SECTION 2. Revisions to Section 4.01(a)(iv)

            Section 4.01(a)(iv) of Trust Supplement No. 2001-2A-1 is amended to
delete the clause "(other than the Company or any Affiliate of the Company)"
wherever it appears.

            SECTION 3. Miscellaneous

            (a) This Refunding Amendment may be executed in any number of
counterparts (and each party shall not be required to execute the same
counterpart). Each counterpart of this Refunding Amendment including a signature
page or pages executed by each of the parties hereto shall be an original
counterpart of this Refunding Amendment, but all of such counterparts together
constitute one instrument.

            (b) THIS REFUNDING AMENDMENT HAS BEEN DELIVERED IN THE STATE OF NEW
YORK AND 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
SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

                                       3
<PAGE>
      IN WITNESS WHEREOF, the parties have caused this Refunding Amendment to be
duly executed by their respective officers thereto duly authorized as of the
date first written above.

                                        AMERICAN AIRLINES, INC.

                                        By:_____________________________________
                                           Name:
                                           Title:

                                        STATE STREET BANK AND TRUST COMPANY
                                        OF CONNECTICUT, NATIONAL ASSOCIATION,
                                        as Trustee

                                        By:_____________________________________
                                           Name:
                                           Title:

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00039-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00039-of-00352.parquet"}]]