Document:

<PAGE>

                                                                   Exhibit 10.94

May 21, 2003

Mr. Robert Reding
628 Regency Crossing
Southlake, TX   76092

Dear Bob:

Congratulations on being promoted to your new position as Senior Vice President
Technical Operations. I and the other members of the senior management team look
forward to working with you as we return American to a more sound financial
footing.

In light of your new responsibilities and your assignment to American Airlines,
I want to confirm the agreement that we made with you when you were recruited to
join American Eagle in 2000. Thus, we will continue to grant you two years of
credited service for each year of actual service, up to a maximum of ten
additional years of credited service.

Thanks again for your contributions.

Very truly yours,

Sue M. Oliver
Senior Vice President Human Resources<PAGE>

                                                                   Exhibit 10.99

6-1162-LAJ-936

American Airlines, Inc.
P.O. Box 619616
Dallas-Fort Worth Airport, Texas  75261-9616

Subject:    Special Matters for Model 737, 757, 767 and 777 Aircraft

Reference:  Purchase Agreement Nos. 1977, 1978, 1979 and 1980 (collectively, the
            "Purchase Agreements") between The Boeing Company ("Boeing") and
            American Airlines, Inc. ("Customer") relating to Model 737, 757, 767
            and 777 aircraft, respectively

This letter agreement ("Letter Agreement") is entered into on the date below,
and amends and supplements each Purchase Agreement. All capitalized terms used
herein but not otherwise defined in this Letter Agreement have the same meaning
as in the applicable Purchase Agreement.

Customer and Boeing have agreed to reschedule the Scheduled Delivery Months of
certain 737-823 and 777-223 aircraft (collectively, the "Deferred Aircraft") as
described below and subject to, and in consideration of, the following terms and
conditions.

1.    Scheduled Delivery Months of Deferred Aircraft.

      1.1.  Model 737-823 Aircraft. The revised Scheduled Delivery Months for
            the firm 737-823 Aircraft undelivered at the time of execution of
            this Letter Agreement is documented in Attachment A to this Letter
            Agreement.

      1.2.  Model 777-223 Aircraft. The revised Scheduled Delivery Months for
            the firm 777-223 Aircraft undelivered at the time of execution of
            this Letter Agreement is documented in Attachment B to this Letter
            Agreement.

2.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

3.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

6-1162-LAJ-936
Page 2

4.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

5.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

6.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

7.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

8.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

9.    Supplemental Agreements. Customer and Boeing agree to use commercially
      reasonable efforts to create or amend, by December 10, 2004, documentation
      for existing agreements as may be required to further implement the
      agreements identified within this Letter Agreement. In no event shall the
      inability of the parties to complete documentation by December 10, 2004
      modify in any way the obligations each party has made within this Letter
      Agreement.

10.   [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

11.   Acceptance and Expiration of Letter Agreement. The terms of this Letter
      Agreement are conditioned upon acceptance of this Letter Agreement by
      Customer, on or before November 17, 2004.

<PAGE>

6-1162-LAJ-936
Page 3

12.   Confidential Treatment. Customer and Boeing understand and acknowledge
      that the commercial and financial information contained in this Letter
      Agreement are considered as highly confidential. Customer and Boeing agree
      that each will treat this Letter Agreement and the information contained
      herein as confidential and will not, without prior written consent of the
      other, disclose this Letter Agreement or the information contained herein
      to any other person or entity except as provided in this Letter Agreement
      or the applicable Purchase Agreement.

Very truly yours,

THE BOEING COMPANY

By ______________________________________

Its Attorney-In-Fact

ACCEPTED AND AGREED TO this

Date: November 17, 2004

AMERICAN AIRLINES, INC.

By ______________________________________

Its VP Corporate Development and Treasurer

<PAGE>

Attachment A to Letter Agreement No. 6-1162-LAJ-936
Page 1

<TABLE>
<CAPTION>
 FROM SCHEDULED DELIVERY MONTH        MSN     TO SCHEDULED DELIVERY MONTH
------------------------------------  ---  ----------------------------------
<S>                                   <C>  <C>
       [CONFIDENTIAL PORTION               [CONFIDENTIAL PORTION OMITTED AND
   OMITTED AND FILED SEPARATELY                FILED SEPARATELY WITH THE
 WITH THE SECURITIES AND EXCHANGE          SECURITIES AND EXCHANGE COMMISSION
COMMISSION PURSUANT TO A REQUEST FOR           PURSUANT TO A REQUEST FOR
    CONFIDENTIAL TREATMENT]                     CONFIDENTIAL TREATMENT]
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</TABLE>

<PAGE>

Attachment B to Letter Agreement No. 6-1162-LAJ-936
Page 1

<TABLE>
<CAPTION>
  FROM SCHEDULED DELIVERY MONTH       MSN     TO SCHEDULED DELIVERY MONTH
------------------------------------  ---  ----------------------------------
<S>                                   <C>  <C>
     [CONFIDENTIAL PORTION                  [CONFIDENTIAL PORTION OMITTED AND
OMITTED AND FILED SEPARATELY WITH              FILED SEPARATELY WITH THE
   THE SECURITIES AND EXCHANGE             SECURITIES AND EXCHANGE COMMISSION
COMMISSION PURSUANT TO A REQUEST FOR            PURSUANT TO A REQUEST FOR
    CONFIDENTIAL TREATMENT]                     CONFIDENTIAL TREATMENT]
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</TABLE>

<PAGE>
AMR EXHIBIT 10.99

                  PURCHASE AGREEMENT NO. 1977 SUPPLEMENT NO. 19

            PURCHASE AGREEMENT No. 1977 SUPPLEMENT NO. 19 (this "Agreement")
dated January 11, 2005 between The Boeing Company ("Boeing") and American
Airlines, Inc. ("Customer").

                                R E C I T A L S:

A.    Boeing and Customer have heretofore entered into that certain Purchase
      Agreement No. 1977, dated October 31, 1997, as amended and supplemented,
      (capitalized terms used herein without definition shall have the meanings
      specified therefor in such Purchase Agreement).

B.    Pursuant to Letter Agreement no. 6-1162-LAJ-936, Boeing and Customer have
      agreed to, among other things, reschedule the Scheduled Delivery Months of
      47 Aircraft.

C.    Customer and Boeing desire to amend and supplement the Purchase Agreement
      as provided below.

In consideration of the foregoing premises and other good and sufficient
consideration, Boeing and Customer hereby agree as follows:

1.    AMENDMENT TO REFLECT SCHEDULED DELIVERY MONTH DEFERRALS FOR DEFERRED
      AIRCRAFT. The Purchase Agreement is amended and supplemented to reflect
      the rescheduling of the Scheduled Delivery Months for the 47 Aircraft (the
      "Deferred Aircraft") as documented in the Scheduled Delivery Month
      Deferrals for Deferred Aircraft attached hereto and hereby made a part of
      this Agreement.

2.    REVISED SCHEDULED DELIVERY MONTH. Table 1 to the Purchase Agreement is
      hereby replaced in its entirety with the revised Table 1 attached hereto
      and hereby made a part of the Purchase Agreement. The revised Scheduled
      Delivery Months for the Deferred Aircraft pursuant to this Agreement are
      reflected in the attached Table 1. In addition, pursuant to Letter
      Agreement no. 6-1161-LAJ-936, the Airframe Price and Optional Features
      Price for the Aircraft listed in Table 1 have been escalated to July 2003
      dollars. Such Optional Features for those Aircraft listed in Table 1 are
      documented in the American Airlines 737-823 Optional Features listing
      attached hereto and hereby made a part of this Agreement.

3.    [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
      TREATMENT]

P.A.No. 1977                            SA19                             Page 1
<PAGE>

4.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]
      ELIGIBLE MODEL AIRCRAFT. Pursuant to Letter Agreement no. 6-1162-LAJ-936,
      Customer and Boeing agreed to revise the Aircraft Information Tables
      containing the Aircraft Description, Price, and Proposal Deposit
      information for the currently available Eligible Model aircraft identified
      in Letter Agreement No. 6-1162-AKP-075 (the "Rights Letter") and,
      accordingly, the Rights Letter is hereby modified by replacing Attachments
      A-1 through A-3 in their entirety with the revised Attachment A attached
      hereto and hereby made a part of the Purchase Agreement. The Eligible
      Model aircraft identified in Attachment A to the Rights Letter will be
      modified from time to time to reflect the latest Detail Specification for
      Customer's 737-800 Aircraft and the latest Boeing generic detail
      specification for all other models in Attachment A. [CONFIDENTIAL PORTION
      OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION
      PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

5.    MADP AND QADP RIGHTS. Pursuant to Letter Agreement no. 6-1162-LAJ-936,
      Customer and Boeing agreed to modifications to the number of certain
      Customer MADP Rights and QADP Rights identified in the Rights Letter and,
      accordingly, the Rights Letter is hereby modified by replacing each of
      Attachment B and Attachment C in its entirety with the revised Attachment
      B and Attachment C, respectively, attached hereto and such attachments are
      hereby made a part of the Purchase Agreement.

6.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

7.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

8.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

9.    EFFECT ON PURCHASE AGREEMENT. Except as expressly set forth herein, all
      terms and provisions contained in the Purchase Agreement shall remain in
      full force and effect. This Agreement contains the entire agreement
      between the parties with respect to the subject matter hereof and
      supersedes all previous proposals, and agreements, understandings,
      commitments or representations whatsoever, oral or written, with respect
      to the subject matter hereof and may be changed only in writing signed by
      authorized representatives of the parties.

P.A.No. 1977                            SA19                             Page 2

<PAGE>

IN WITNESS WHEREOF, Boeing and Customer have each caused this Agreement to be
duly executed as of the day and year first above written.

AMERICAN AIRLINES, INC.                      THE BOEING COMPANY

By _______________________________________ By __________________________________

Its VP Corporate Development and Treasurer Its Attorney-In-Fact

Attachments:      Scheduled Delivery Month Deferrals for Deferred Aircraft

                  Table 1 to Purchase Agreement No. 1977, 737-800 Aircraft
                  Delivery, Description, Price and Advance Payments

                  American Airlines 737-823 Optional Features

                  Schedule 1 to Table 1 to Purchase Agreement No. 1977, 737-823
                  Advance Payment Schedule

                  Attachment A to Letter Agreement 6-1162-AKP-075, Aircraft
                  Purchase Rights and Substitution Rights

                  Attachment B to Letter Agreement 6-1162-AKP-075, Aircraft
                  Purchase Rights and Substitution Rights

                  Attachment C to Letter Agreement 6-1162-AKP-075, Aircraft
                  Purchase Rights and Substitution Rights

                  Exhibit [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY
                  WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                  REQUEST FOR CONFIDENTIAL TREATMENT] to AGTA No. AGTA-AAL
                  [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                  CONFIDENTIAL TREATMENT]

P.A.No. 1977                            SA19                             Page 3
<PAGE>

Scheduled Delivery Month Deferrals for Deferred Aircraft

<TABLE>
<CAPTION>
 FROM SCHEDULED DELIVERY MONTH           MSN     TO SCHEDULED DELIVERY MONTH
------------------------------------     ---  ----------------------------------
<S>                                      <C>  <C>
  [CONFIDENTIAL PORTION {2 PAGES}                [CONFIDENTIAL PORTION {2 PAGES}
  OMITTED AND FILED SEPARATELY WITH            OMITTED AND FILED SEPARATELY WITH
    THE SECURITIES AND EXCHANGE                    THE SECURITIES AND EXCHANGE
COMMISSION PURSUANT TO A REQUEST FOR          COMMISSION PURSUANT TO A REQUEST FOR

    CONFIDENTIAL TREATMENT]                          CONFIDENTIAL TREATMENT]
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</TABLE>

<PAGE>

<TABLE>
<CAPTION>
------------------------------------  ---  ----------------------------------
 FROM SCHEDULED DELIVERY MONTH        MSN  TO SCHEDULED DELIVERY MONTH
------------------------------------  ---  ----------------------------------
<S>                                   <C>  <C>
     [CONFIDENTIAL PORTION                 [CONFIDENTIAL PORTION OMITTED AND
 OMITTED AND FILED SEPARATELY WITH           FILED SEPARATELY WITH THE
  THE SECURITIES AND EXCHANGE              SECURITIES AND EXCHANGE COMMISSION
COMMISSION PURSUANT TO A REQUEST FOR           PURSUANT TO A REQUEST FOR
     CONFIDENTIAL TREATMENT]                    CONFIDENTIAL TREATMENT]
------------------------------------  ---  ----------------------------------

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</TABLE>

<PAGE>

                     TABLE 1 TO PURCHASE AGREEMENT NO. 1977
           AIRCRAFT DELIVERY, DESCRIPTION, PRICE AND ADVANCE PAYMENTS

     [CONFIDENTIAL PORTION {3 PAGES} OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

                  AMERICAN AIRLINES 737-823 OPTIONAL FEATURES

     [CONFIDENTIAL PORTION {8 PAGES} OMITTED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

                            SCHEDULE 1 TO TABLE 1 TO
                             PURCHASE AGREEMENT 1977

     [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

ATTACHMENT A. TO 6-1162-AKP-075

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                       REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

           ATTACHMENT B TO LETTER AGREEMENT 6-1162-AKP-075 (MODEL 737)
             MADP RIGHTS AIRCRAFT DELIVERY MONTHS AND EXERCISE DATES

     [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

           ATTACHMENT C TO LETTER AGREEMENT 6-1162-AKP-075 (MODEL 737)
            QADP RIGHTS AIRCRAFT DELIVERY QUARTERS AND EXERCISE DATES

     [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

           EXHIBIT [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY
           WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

                                       TO

                  AIRCRAFT GENERAL TERMS AGREEMENT NO. AGTA-AAL

                                     BETWEEN

                               THE BOEING COMPANY

                                       AND

                             AMERICAN AIRLINES, INC.

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

                                     BOEING PROPRIETARY

AGTA-AAL                                 Page i
<PAGE>

      1. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

      2. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

                               BOEING PROPRIETARY

AGTA-AAL                            Page ii

<PAGE>

                  PURCHASE AGREEMENT NO. 1978 SUPPLEMENT NO. 7

      PURCHASE AGREEMENT NO. 1978 SUPPLEMENT NO. 7 (this "Agreement"), dated
January 11, 2005 between The Boeing Company ("Boeing") and American Airlines,
Inc. ("Customer").

                                R E C I T A L S:

  A.  Boeing and Customer have heretofore entered into that certain Purchase
      Agreement No. 1978, dated October 31, 1997, as amended and supplemented
      (capitalized terms used herein without definition shall have the meanings
      specified therefor in such Purchase Agreement).

  B.  Pursuant to Boeing letter no. 6-1162-LAJ-936, Boeing and Customer have
      come to agreement with regard to the remaining MADP Rights and QADP Rights
      with respect to Boeing model 757 aircraft as described below.

  C.  Customer and Boeing desire to amend and supplement the Purchase Agreement
      as provided below.

      In consideration of the foregoing premises and other good and sufficient
consideration, Boeing and Customer hereby agree as follows:

1.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

2.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

3.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

4.    EFFECT ON PURCHASE AGREEMENT. Except as expressly set forth herein, all
terms and provisions contained in the Purchase Agreement shall remain in full
force and effect. This Agreement contains the entire agreement between the
parties with respect to the subject matter hereof and supersedes all previous
proposals, agreements, understandings, commitments or representations
whatsoever, oral or written, with respect to the subject matter hereof and may
be changed only in writing signed by authorized representatives of the parties.

PA No. 1978                           SA No.7

<PAGE>

IN WITNESS WHEREOF, Boeing and Customer have each caused this Agreement to be
duly executed as of the day and year first above written.

AMERICAN AIRLINES, INC.                       THE BOEING COMPANY

By _______________________________________ By __________________________________

Its VP Corporate Development and Treasurer    Its Attorney-In-Fact

Attachments: Letter Agreement 6-1162-AKP-089R2, Aircraft Purchase Rights and
             Substitution Rights

             Exhibit [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
             SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
             CONFIDENTIAL TREATMENT] to AGTA No. AGTA-AAL [CONFIDENTIAL PORTION
             OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
             COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

PA No. 1978                           SA No.7
<PAGE>

American Airlines, Inc.
P.O. Box 619616
Dallas/Ft. Worth Airport, Texas 75261-9616

Subject:   Aircraft Purchase Rights and Substitution Rights

Reference: Purchase Agreement No. 1978 between The Boeing
           Company and American Airlines, Inc. relating to
           Model 757-223 aircraft

      This letter agreement ("Letter Agreement") is entered into on the date
below, and constitutes a part of the above-referenced Purchase Agreement, as the
same may hereafter be amended, modified or supplemented and including, without
limitation, as part thereof the exhibits, appendices, schedules, attachments and
letter agreements thereto (the "757-223 Purchase Agreement").

      Pursuant to Letter Agreement no. 6-1162-LAJ-936 dated November 17, 2004,
Boeing and Customer have come to agreement with regard to the remaining MADP
Rights and QADP Rights with respect to Boeing model 757 aircraft as described
below. Accordingly, this Letter Agreement supersedes and replaces in its
entirety Letter Agreement 6-1162-AKP-089R1 dated as of April 26, 2002.

      1. DEFINITIONS. Capitalized terms used herein and not defined pursuant to
this Letter Agreement have the meanings set forth in the 757-223 Purchase
Agreement. The following terms, when used in capitalized form, have the
following meanings:

      2. [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

      3. [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

      4. CONFIDENTIAL TREATMENT. Customer and Boeing understand that certain
commercial and financial information contained in this Letter Agreement are
considered by Boeing and Customer as confidential. Customer and Boeing agree
that each will treat this Letter Agreement and the information contained herein
as confidential and will not, without the prior written consent of the other,
disclose this Letter Agreement or any information contained herein to any other
person or entity, except as provided in this Letter Agreement or in the
Applicable Purchase Agreements.

PA No. 1978                           SA No.7

<PAGE>

American Airlines
6-1162-AKP-089R2
Page 1

Very truly yours,

THE BOEING COMPANY

By ___________________________________________

Its Attorney-In-Fact

ACCEPTED AND AGREED TO this

Date: January 11, 2005

AMERICAN AIRLINES, INC.

By ____________________________________________

Its VP Corporate Development and Treasurer

Attachment A: Letter Agreements

PA No. 1978                           SA No.7
<PAGE>

Attachment A
6-1162-AKP-089R2
Page 1

[CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

           EXHIBIT [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY
       WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST
                          FOR CONFIDENTIAL TREATMENT]

                                       TO

                  AIRCRAFT GENERAL TERMS AGREEMENT NO. AGTA-AAL

                                     BETWEEN

                               THE BOEING COMPANY

                                       AND

                             AMERICAN AIRLINES, INC.

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

                               BOEING PROPRIETARY

AGTA-AAL                             Page i

<PAGE>

      1. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

      2. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

                               BOEING PROPRIETARY

AGTA-AAL                            Page ii

<PAGE>

                  PURCHASE AGREEMENT NO. 1979 SUPPLEMENT NO. 6

      PURCHASE AGREEMENT No. 1979 SUPPLEMENT NO. 6 (this "Agreement"), dated
January 11, 2005, between The Boeing Company ("Boeing") and American Airlines,
Inc. ("Customer").

                                R E C I T A L S:

   A. Boeing and Customer have heretofore entered into that certain Purchase
      Agreement No. 1979, dated October 31, 1997 (capitalized terms used herein
      without definition shall have the meanings specified therefor in such
      Purchase Agreement).

   B. Pursuant to Letter Agreement no. 6-1162-LAJ-936, Customer and Boeing
      agreed to, among other things, revise the prices of Eligible Model
      aircraft from being expressed in July 1995 Dollars to being expressed in
      July 2003 Dollars.

   C. Customer and Boeing desire to amend and supplement the Purchase Agreement
      as provided below.

In consideration of the foregoing premises and other good and sufficient
consideration, Boeing and Customer hereby agree as follows:

1.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]
      ELIGIBLE MODEL AIRCRAFT. Pursuant to Letter Agreement no. 6-1162-LAJ-936,
      Customer and Boeing agreed to revise the Aircraft Information Tables
      containing the Aircraft Description, Price, and Proposal Deposit
      information for the currently available Eligible Model aircraft identified
      in Letter Agreement No. 6-1162-AKP-100R1 (the "Rights Letter") and,
      accordingly, the Rights Letter is hereby modified by replacing Attachments
      A-1 through A-3 in their entirety with the revised Attachment A attached
      hereto and hereby made a part of the Purchase Agreement. The Eligible
      Model aircraft identified in the Rights Letter will be modified from time
      to time to reflect the latest Boeing generic detail specification.
      [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

2.    MADP AND QADP RIGHTS. The Rights Letter is hereby modified by replacing
      each of Attachment B and Attachment C in its entirety with the revised
      Attachment B and Attachment C, respectively, attached hereto and such
      attachments are hereby made a part of the Purchase Agreement.

<PAGE>

3.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

4.    EFFECT ON PURCHASE AGREEMENT. Except as expressly set forth herein, all
      terms and provisions contained in the Purchase Agreement shall remain in
      full force and effect. This Agreement contains the entire agreement
      between the parties with respect to the subject matter hereof and
      supersedes all previous proposals, and agreements, understandings,
      commitments or representations whatsoever, oral or written, with respect
      to the subject matter hereof, and may be changed only in writing signed by
      authorized representatives of the parties.

IN WITNESS WHEREOF, Boeing and Customer have each caused this Agreement to be
duly executed as of the day and year first above written.

AMERICAN AIRLINES, INC.                       THE BOEING COMPANY

By _______________________________________    By _______________________________

Its VP Corporate Development and Treasurer  Its Attorney-In-Fact

Attachments: Attachment A to Letter Agreement 6-1162-AKP-100R1,
             Aircraft Purchase Rights and Substitution Rights.

             Attachment B to Letter Agreement 6-1162-AKP-100R1,
             Aircraft Purchase Rights and Substitution Rights.

             Attachment C to Letter Agreement 6-1162-AKP100R1,
             Aircraft Purchase Rights and Substitution Rights.

             Exhibit [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
             SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
             CONFIDENTIAL TREATMENT] to AGTA No. AGTA-AAL [CONFIDENTIAL PORTION
             OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
             COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT].

<PAGE>

ATTACHMENT A.  6-1162-AKP-100R1

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

          ATTACHMENT B TO LETTER AGREEMENT 6-1162-AKP-100R1 (MODEL 767)
             MADP RIGHTS AIRCRAFT DELIVERY MONTHS AND EXERCISE DATES

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

          ATTACHMENT C TO LETTER AGREEMENT 6-1162-AKP-100R1 (MODEL 767)
            QADP RIGHTS AIRCRAFT DELIVERY QUARTERS AND EXERCISE DATES

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

           EXHIBIT [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY
           WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

                                       TO

                  AIRCRAFT GENERAL TERMS AGREEMENT NO. AGTA-AAL

                                     BETWEEN

                               THE BOEING COMPANY

                                       AND

                             AMERICAN AIRLINES, INC.

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

                                BOEING PROPIETARY

AGTA-AAL                             Page i

<PAGE>

      1. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

      2. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

<PAGE>

                  PURCHASE AGREEMENT NO. 1980 SUPPLEMENT NO. 17

      PURCHASE AGREEMENT No. 1980 SUPPLEMENT NO. 17 (this "Agreement"), dated
January 11, 2005 between The Boeing Company ("Boeing") and American Airlines,
Inc. ("Customer").

                                R E C I T A L S:

   A. Boeing and Customer have heretofore entered into that certain Purchase
      Agreement No. 1980 dated October 31, 1997, as amended and supplemented
      (capitalized terms used herein without definition shall have the meanings
      specified therefor in such Purchase Agreement).

   B. Pursuant to Letter Agreement 6-1162-LAJ-936, Boeing and Customer agreed
      to, among other things, reschedule the delivery of eight Aircraft.

   C. Customer and Boeing desire to amend and supplement the Purchase Agreement
      as provided below.

In consideration of the foregoing premises and other good and sufficient
consideration, Boeing and Customer hereby agree as follows:

1.    AMENDMENT TO REFLECT SCHEDULED DELIVERY MONTH REVISIONS FOR CERTAIN
      AIRCRAFT. The Purchase Agreement is amended and supplemented to reflect
      the rescheduling of the Scheduled Delivery Months for the following eight
      Aircraft ("Rescheduled Aircraft") as follows:

<TABLE>
<CAPTION>
   FROM SCHEDULED DELIVERY MONTH      MSN  TO SCHEDULED DELIVERY MONTH
------------------------------------  ---  ----------------------------------
<S>                                   <C>  <C>
   [CONFIDENTIAL PORTION OMITTED           [CONFIDENTIAL PORTION OMITTED AND
     AND FILED SEPARATELY WITH                 FILED SEPARATELY WITH THE
     THE SECURITIES AND EXCHANGE           SECURITIES AND EXCHANGE COMMISSION
COMMISSION PURSUANT TO A REQUEST FOR           PURSUANT TO A REQUEST FOR
     CONFIDENTIAL TREATMENT]                    CONFIDENTIAL TREATMENT]
------------------------------------  ---  ----------------------------------

------------------------------------  ---  ----------------------------------

------------------------------------  ---  ----------------------------------

------------------------------------  ---  ----------------------------------

------------------------------------  ---  ----------------------------------

------------------------------------  ---  ----------------------------------
</TABLE>

<PAGE>

2.    REVISED SCHEDULED DELIVERY MONTH. Table 2 and Table 3 to the Purchase
      Agreement are hereby replaced in their entirety with the revised Table 1
      attached hereto and hereby made a part of the Purchase Agreement. The
      Scheduled Delivery Months for all nine Aircraft on order ("Existing Firm
      Aircraft") as of the date of this Agreement (including the Rescheduled
      Aircraft referenced above) are reflected in the attached Table 1. In
      addition, pursuant to Letter Agreement no. 6-1162-LAJ-936, the Airframe
      Price and Optional Features Price for the Existing Firm Aircraft listed in
      Table 1 have been escalated to July 2003 dollars. Such Optional Features
      for the Existing Firm Aircraft are reflected in the American Airlines
      777-223 Optional Features listing attached hereto and hereby made a part
      of this Agreement.

3.    [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
      TREATMENT]

4.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]
      ELIGIBLE MODEL AIRCRAFT. Pursuant to Letter Agreement 6-1162-LAJ-936,
      Customer and Boeing agreed to revise the Aircraft Information Tables
      containing the Aircraft Description, Price, and Proposal Deposit
      information for those currently available Eligible Model aircraft
      identified in Letter Agreement No. 6-1162-AKP-110R1 (the "Rights Letter")
      and, accordingly, the Rights Letter is hereby modified by replacing
      Attachments A-1 through A-11 in their entirety with the revised Attachment
      A attached hereto and hereby made a part of the Purchase Agreement. The
      Eligible Model aircraft identified in the Rights Letter will be modified
      from time to time to reflect the latest Detail Specification for
      Customer's 777-223 Aircraft and the latest generic Boeing detail
      specification for all other models described in Attachment A.
      [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

5.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

6.    MADP AND QADP RIGHTS. The Rights Letter is hereby modified by replacing
      each of Attachment B and Attachment C in its entirety with the revised
      Attachment B and Attachment C, respectively, attached hereto and such
      attachments are hereby made a part of the Purchase Agreement.

7.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

8.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

9.    [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

10.   [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

11.   [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

12.   EFFECT ON PURCHASE AGREEMENT. Except as expressly set forth herein, all
      terms and provisions contained in the Purchase Agreement shall remain in
      full force and effect. This Agreement contains the entire agreement
      between the parties with respect to the subject matter hereof and
      supersedes all previous proposals, and agreements, understandings,
      commitments or representations whatsoever, oral or written, with respect
      to the subject matter hereof and may be changed only in writing signed by
      authorized representatives of the parties.

<PAGE>

IN WITNESS WHEREOF, Boeing and Customer have each caused this Agreement to be
duly executed as of the day and year first above written.

AMERICAN AIRLINES, INC.                         THE BOEING COMPANY

By ________________________________________     By______________________________

Its VP Corporate Development and Treasurer      Its Attorney-In-Fact

Attachments: Table 1 to Purchase Agreement No. 1980, 777-223ER Aircraft
             Delivery, Description, Price and Advance Payments, (Rolls Royce
             Engines)

             American Airlines 777-223 Optional Features

             Schedule 1 to Table 1 of Purchase Agreement No. 1980, 777-223
             Advance Payment Schedule

             Attachment A Letter Agreement 6-1162-AKP-110R1, Aircraft Purchase
             Rights and Substitution Rights

             Attachment B to Letter Agreement 6-1162-AKP-110R1, Aircraft
             Purchase Rights and Substitution Rights

             Attachment C to Letter Agreement 6-1162-AKP-110R1, Aircraft
             Purchase Rights and Substitution Rights

             Letter Agreement 6-1162-AKP-109R1, Business Considerations

             Exhibit [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
             SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
             CONFIDENTIAL TREATMENT] to AGTA No. AGTA-AAL [CONFIDENTIAL PORTION
             OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
             COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]
<PAGE>

                     TABLE 1 TO PURCHASE AGREEMENT NO. 1980
           AIRCRAFT DELIVERY, DESCRIPTION, PRICE AND ADVANCE PAYMENTS

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

                 AMERICAN AIRLINES AA 777-223 OPTIONAL FEATURES

     [CONFIDENTIAL PORTION {7 PAGES} OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

                            SCHEDULE 1 TO TABLE 1 TO
                             PURCHASE AGREEMENT 1980

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

ATTACHMENT A. 6-1162-AKP-110R1

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

          ATTACHMENT B TO LETTER AGREEMENT 6-1162-AKP-110R1 (MODEL 777)
             MADP RIGHTS AIRCRAFT DELIVERY MONTHS AND EXERCISE DATES

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

<PAGE>

          ATTACHMENT C TO LETTER AGREEMENT 6-1162-AKP-110R1 (MODEL 777)
            QADP RIGHTS AIRCRAFT DELIVERY QUARTERS AND EXERCISE DATES

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

<PAGE>

                                6-1162-AKP-109R1

American Airlines, Inc.
P.O. Box 619616
Dallas-Fort Worth Airport, Texas  75261-9616

Subject:   Business Considerations

Reference: Purchase Agreement No. 1980  between The Boeing Company and
           American Airlines,Inc. relating to Model 777-223ER Aircraft

This letter agreement (Letter Agreement) is entered into on the date below and
amends and supplements the Purchase Agreement referenced above. All capitalized
terms used herein but not otherwise defined in this Letter Agreement shall have
the same meanings assigned thereto in Exhibit C to the Purchase Agreement or
elsewhere in such Purchase Agreement.

1. [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

2. [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

3. [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

4. [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

5. Confidential Treatment.

      Customer and Boeing understand that certain commercial and financial
information contained in this Letter Agreement are considered by Boeing and
Customer as confidential. Customer and Boeing agree that each will treat this
Letter Agreement and the information contained herein as confidential and will
not, without the prior written consent of the other, disclose this Letter
Agreement or any information contained herein to any other person or entity,
except as provided in this Letter Agreement and or the Purchase Agreement.

<PAGE>

Very truly yours,

THE BOEING COMPANY

By ____________________________________________

Its Attorney-In-Fact

ACCEPTED AND AGREED TO this

Date: January 11, 2005

AMERICAN AIRLINES, INC.

By ____________________________________________

Its  VP - Corporate Development  and Treasurer

<PAGE>

           EXHIBIT [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY
           WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A
                      REQUEST FOR CONFIDENTIAL TREATMENT]

                                       TO

                  AIRCRAFT GENERAL TERMS AGREEMENT NO. AGTA-AAL

                                     BETWEEN

                               THE BOEING COMPANY

                                       AND

                             AMERICAN AIRLINES, INC.

           [CONFIDENTIAL PORTION OMITTED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
                            CONFIDENTIAL TREATMENT]

                               BOEING PROPRIETARY

AGTA-AAL                            Page i

<PAGE>

      1. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

      2. [CONFIDENTIAL PORTION {2 PAGES} OMITTED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT]

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