AMERICAN AADVANTAGE MILEAGE FUNDS
485APOS, 1997-12-15
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<PAGE>   1
   As filed with the Securities and Exchange Commission on December 15, 1997

                                                      1933 Act File No. 33-91058
                                                      1940 Act File No. 811-9018

                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                                   FORM N-1A

      REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933            [ X ]

Pre-Effective Amendment No.                                    [   ]
                                   -----
Post-Effective Amendment No.         5                         [ X ]
                                   -----

                                     and/or

            REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT
                                   OF 1940                               [ X ]

Amendment No.                        6   
                                   -----
                       (Check appropriate box or boxes.)

                       AMERICAN AADVANTAGE MILEAGE FUNDS
               (Exact name of Registrant as Specified in Charter)
                           4333 Amon Carter Boulevard
                            Fort Worth, Texas  76155
               (Address of Principal Executive Office) (Zip Code)
       Registrant's Telephone Number, including Area Code: (817) 967-3509

                          WILLIAM F. QUINN, PRESIDENT
                           4333 Amon Carter Boulevard
                            Fort Worth, Texas  76155
                    (Name and Address of Agent for Service)

                                    Copy to:
                          CLIFFORD J. ALEXANDER, ESQ.
                           Kirkpatrick & Lockhart LLP
                         1800 Massachusetts Avenue, NW
                             Washington, DC  20036

It is proposed that this filing will become effective (check appropriate box)

         [   ]   immediately upon filing pursuant to paragraph (b)
                
         [   ]   on (date) pursuant to paragraph (b)
                
         [   ]   60 days after filing pursuant to paragraph (a)(1)
                
         [   ]   on March 1, 1998 pursuant to paragraph (a)(1)
                
         [   ]   75 days after filing pursuant to paragraph (a)(2)

         [ X ]   on March 2, 1997 pursuant to paragraph (a)(2) of Rule 485.

 Title of Securities Being Registered ...........Shares of Beneficial Interest
<PAGE>   2
Registrant has adopted a master-feeder operating structure for each of its
series.  This Post-Effective Amendment includes signature pages for the AMR
Investment Services Trust and the Equity 500 Index Portfolios, the master
trusts.





<PAGE>   3
                       AMERICAN AADVANTAGE MILEAGE FUNDS
                       CONTENTS OF REGISTRATION STATEMENT

This registration statement is comprised of the following:

                 Cover Sheet

                 Contents of Registration Statement

                 Cross Reference Sheets

                 Prospectus for the following American AAdvantage Mileage
                 Funds: Balanced Fund, Growth and Income Fund, International
                 Equity Fund, S&P 500 Index Fund, Intermediate Bond Fund,
                 Short-Term Bond Fund, Money Market Fund, Municipal Money
                 Market Fund and U.S. Government Money Market Fund.

                 Statement of Additional Information for the following American
                 AAdvantage Mileage Funds:  Balanced Fund, Growth and Income
                 Fund, International Equity Fund, S&P 500 Index Fund,
                 Intermediate Bond Fund, Short-Term Bond Fund, Money Market
                 Fund, Municipal Money Market Fund, and U.S. Government Money
                 Market Fund.

                 Prospectus for the Platinum Class of the American AAdvantage
                 Money Market Mileage Fund, American AAdvantage Money Market
                 Fund, American AAdvantage Municipal Money Market Fund and
                 American AAdvantage U.S. Government Money Market Fund.

                 Statement of Additional Information for the Platinum Class of
                 the American AAdvantage Money Market Mileage Fund, American
                 AAdvantage Money Market Fund, American AAdvantage Municipal
                 Money Market Fund, American AAdvantage U.S. Government Money
                 Market Fund.

                 Part C

                 Signature Pages

                 Exhibits





<PAGE>   4
                       AMERICAN AADVANTAGE MILEAGE FUNDS
   
       American AAdvantage Mileage Funds -- Balanced, Growth and Income,
          International Equity, Short-Term Bond, Money Market (Mileage
        Class), Municipal Money Market and U.S. Government Money Market
    
                                     Funds.


                        FORM N-1A CROSS-REFERENCE SHEET


                                     Part A

<TABLE>
<CAPTION>
Form N-1A
Item No.                  PROSPECTUS CAPTION
- - --------                  ------------------
<S>                       <C>
1                         Cover Page

2                         Table of Fees and Expenses

3                         Financial Highlights; Yields and Total Returns

4                         Cover Page; Introduction; Investment Objectives, Policies and Risks; Investment Restrictions

5                         Management and Administration of the Trusts; Investment Advisers

5A                        Not Applicable

6                         Dividends, Other Distributions and Tax Matters; General Information; Shareholder Communications

7                         Management and Administration of the Trusts; AAdvantage Miles(R); How to Purchase Shares;
                          Valuation of Shares

8                         How to Redeem Shares; Exchange Privilege

9                         Inapplicable
</TABLE>

                                     Part B


<TABLE>
<CAPTION>
FORM N-1A                 STATEMENT OF ADDITIONAL
ITEM NO.                  INFORMATION CAPTION  
- - --------                  ---------------------
<S>                       <C>
10                        Cover Page

11                        Table of Contents

12                        Cover Page

13                        Investment Restrictions; Approach to Stock Selection; Other Information

14                        Trustees and Officers of the Mileage Trust and the AMR Trust; Trustees and Officers of the
                          Equity 500 Index Portfolio
</TABLE>





<PAGE>   5
<TABLE>
<S>                       <C>
15                        Control Persons and 5% Shareholders

16                        Management, Administrative Services and Distribution Fees; Investment Advisory Agreements

17                        Portfolio Securities Transactions

18                        Description of the Mileage Trust; Other Information

19                        Net Asset Value; Redemptions in Kind

20                        Tax Information

21                        Inapplicable

22                        Yield and Total Return Quotations

23                        Financial Statements
</TABLE>





<PAGE>   6
                 AMERICAN AADVANTAGE MONEY MARKET MILEAGE FUNDS
                                 PLATINUM CLASS

                        FORM N-1A CROSS-REFERENCE SHEET

                                     Part A

<TABLE>
<CAPTION>
FORM N-1A
ITEM NO.                  PROSPECTUS CAPTION
- - --------                  ------------------
<S>                       <C>
1                         Cover Page

2                         Table of Fees and Expenses

3                         Financial Highlights; Yields and Total Returns

4                         Cover Page; Introduction; Investment Objectives, Policies and Risks; Investment Restrictions

5                         Management and Administration of the Trusts

5A                        Not Applicable

6                         Dividends and Tax Matters; General Information; Shareholder Communications

7                         Management and Administration of the Trusts; AAdvantage(R) Miles; How to Purchase Shares;
                          Valuation of Shares

8                         How to Redeem Shares

9                         Inapplicable
</TABLE>

                                     Part B

<TABLE>
<CAPTION>
FORM N-1A                 STATEMENT OF ADDITIONAL
ITEM NO.                  INFORMATION CAPTION  
- - --------                  ---------------------
<S>                       <C>
10                        Cover Page

11                        Table of Contents

12                        Cover Page

13                        Investment Restrictions; Other Information

14                        Trustees and Officers of the Trusts and the AMR Trust

15                        Control Persons and 5% Shareholders

16                        Management, Administrative Services and Distribution Fees

17                        Portfolio Securities Transactions

18                        Description of the Trust; Other Information
</TABLE>





<PAGE>   7
<TABLE>
<S>                       <C>
19                        Net Asset Value; Redemptions in Kind

20                        Tax Information

21                        Inapplicable

22                        Yield and Total Return Quotations

23                        Financial Statements
</TABLE>



PART C.  OTHER INFORMATION

Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.





<PAGE>   8
 
   
THIS PROSPECTUS contains important information about the AMERICAN AADVANTAGE
MILEAGE FUNDS ("Mileage Trust"), an open-end investment company which consists
of the separate investment portfolios listed on this cover page (individually
referred to as a "Fund" and, collectively, the "Funds"). EACH FUND, EXCEPT THE
S&P 500 INDEX MILEAGE FUND, SEEKS ITS INVESTMENT OBJECTIVE BY INVESTING ALL OF
ITS INVESTABLE ASSETS IN A CORRESPONDING PORTFOLIO OF THE AMR INVESTMENT
SERVICES TRUST ("AMR TRUST"). THE S&P 500 INDEX MILEAGE FUND INVESTS ALL OF ITS
INVESTABLE ASSETS IN THE EQUITY 500 INDEX PORTFOLIO. (THE EQUITY 500 INDEX
PORTFOLIO AND THE PORTFOLIOS OF THE AMR TRUST ARE REFERRED TO HEREIN AS A
"PORTFOLIO" AND, COLLECTIVELY, THE "PORTFOLIOS.") EACH PORTFOLIO HAS AN
INVESTMENT OBJECTIVE IDENTICAL TO THE INVESTING FUND. The investment experience
of each Fund will correspond directly with the investment experience of each
Portfolio. Fund shares are offered to individuals and certain grantor trusts.
Prospective investors should read this Prospectus carefully before making an
investment decision and retain it for future reference.
    
 
   
IN ADDITION TO THIS PROSPECTUS, a Statement of Additional Information ("SAI")
dated March 1, 1998 has been filed with the Securities and Exchange Commission
and is incorporated herein by reference. The SAI contains more detailed
information about the Funds. For a free copy of the SAI, call 800-388-3344.
    
 
The Securities and Exchange Commission maintains a Web Site
(http://www.sec.gov) that contains the SAI, material incorporated by reference
and other information regarding the Funds and the Portfolios.
 
AN INVESTMENT IN ANY OF THE MONEY MARKET FUNDS IS NEITHER INSURED NOR
GUARANTEED BY THE U.S. GOVERNMENT AND THERE CAN BE NO ASSURANCE THAT THEY WILL
BE ABLE TO MAINTAIN A STABLE PRICE OF $1.00 PER SHARE.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY SUCH STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.

   
                                   PROSPECTUS
                                 March 1, 1998
    
 
                    [AMERICAN AADVANTAGE MILEAGE FUNDS LOGO]

   
                             BALANCED MILEAGE FUND
                         GROWTH AND INCOME MILEAGE FUND
                       INTERNATIONAL EQUITY MILEAGE FUND
                           S&P 500 INDEX MILEAGE FUND

                         INTERMEDIATE BOND MILEAGE FUND
                          SHORT-TERM BOND MILEAGE FUND
                           MONEY MARKET MILEAGE FUND
                      MUNICIPAL MONEY MARKET MILEAGE FUND
                   U.S. GOVERNMENT MONEY MARKET MILEAGE FUND

                           Managed by AMR Investments
    
<PAGE>   9
 
The AMERICAN AADVANTAGE BALANCED MILEAGE FUND(SM) ("Balanced Fund") seeks income
and capital appreciation by investing all of its investable assets in the
Balanced Portfolio of the AMR Trust ("Balanced Portfolio") which in turn
primarily invests in equity and debt securities (such as stocks and bonds).
 
The AMERICAN AADVANTAGE GROWTH AND INCOME MILEAGE FUND(SM) ("Growth and Income
Fund") seeks long-term capital appreciation and current income by investing all
of its investable assets in the Growth and Income Portfolio of the AMR Trust
("Growth and Income Portfolio") which in turn primarily invests in equity
securities (such as stocks).
 
The AMERICAN AADVANTAGE INTERNATIONAL EQUITY MILEAGE FUND(SM) ("International
Equity Fund") seeks long-term capital appreciation by investing all of its
investable assets in the International Equity Portfolio of the AMR Trust
("International Equity Portfolio") which in turn primarily invests in equity
securities of issuers based outside the United States (such as foreign stocks).
 
   
The AMERICAN AADVANTAGE S&P 500 INDEX MILEAGE FUND(1) ("S&P 500 Index Fund")
seeks to provide investment results that, before expenses, correspond to the
total return of common stocks publicly traded in the United States, as
represented by the Standard & Poor's 500 Composite Stock Price Index (the "S&P
500" or "Index"), by investing all of its investable assets in the Equity 500
Index Portfolio which in turn invests in common stocks of companies that compose
the S&P 500.
    
 
   
The AMERICAN AADVANTAGE INTERMEDIATE BOND MILEAGE FUND(SM) ("Intermediate Bond
Fund") seeks income and capital appreciation by investing all of its investable
assets in the Intermediate Bond Portfolio of the AMR Trust ("Intermediate Bond
Portfolio"), which in turn primarily invests in debt obligations and seeks to
maintain a dollar weighted average duration of three to seven years.
    
 
   
The AMERICAN AADVANTAGE SHORT-TERM BOND MILEAGE FUND(SM) ("Short-Term Bond
Fund," formerly the American AAdvantage Limited-Term Income Fund) seeks income
and capital appreciation by investing all of its investable assets in the
Limited-Term Income Portfolio of the AMR Trust ("Short-Term Bond Portfolio,"
formerly the Limited-Term Income Portfolio) which in turn primarily invests in
debt obligations and seeks to maintain a dollar weighted average maturity of one
to three years.
    
 
   
The AMERICAN AADVANTAGE MONEY MARKET MILEAGE FUND(SM) ("Money Market Fund"),
AMERICAN AADVANTAGE MUNICIPAL MONEY MARKET MILEAGE FUND(SM) ("Municipal Money
Market Fund") and AMERICAN AADVANTAGE U.S. GOVERNMENT MONEY MARKET MILEAGE
FUND(SM) ("U.S. Government Money Market Fund") (collectively, the "Money Market
Funds") each seeks current income, liquidity, and the maintenance of a stable
price per share of $1.00 by investing all of their investable assets in the
Money Market Portfolio of the AMR Trust ("Money Market Portfolio"), the
Municipal Money Market Portfolio of the AMR Trust ("Municipal Money Market
Portfolio") and the U.S. Government Money Market Portfolio of the AMR Trust
("U.S. Government Money Market Portfolio"), respectively (collectively the
"Money Market Portfolios"), which in turn invest in high quality, short-term
obligations. The Municipal Money Market Portfolio invests primarily in municipal
obligations and the U.S. Government Money Market Portfolio invests exclusively
in obligations issued or guaranteed by the U.S. Government, its agencies or
instrumentalities and in repurchase agreements that are collateralized by such
obligations.
    
- - ---------------
 
   
(1) S&P is a trademark of The McGraw-Hill Companies, Inc. and has been licensed
    for use. "Standard and Poor's(R)," "S&P(R)," "Standard & Poor's 500," "S&P
    500(R)" and "500" are all trademarks of the McGraw-Hill Companies, Inc. and
    have been licensed for use by Bankers Trust Company. The S&P 500 Index Fund
    is not sponsored, sold or promoted by Standard & Poor's, and Standard &
    Poor's makes no representation regarding the advisability of investing in
    that Fund.
    
 
   
<TABLE>
    <S>                                      <C>
    TABLE OF FEES AND EXPENSES..............   3
    FINANCIAL HIGHLIGHTS....................   4
    INTRODUCTION............................   6
    INVESTMENT OBJECTIVES, POLICIES AND
      RISKS.................................   6
    INVESTMENT RESTRICTIONS.................  16
    YIELDS AND TOTAL RETURNS................  17
    MANAGEMENT AND ADMINISTRATION OF THE
      TRUSTS................................  17
    INVESTMENT ADVISERS.....................  20
    AADVANTAGE(R) MILES.....................  22
    HOW TO PURCHASE SHARES..................  22
    HOW TO REDEEM SHARES....................  24
    EXCHANGE PRIVILEGE......................  25
    VALUATION OF SHARES.....................  25
    DIVIDENDS, OTHER DISTRIBUTIONS AND TAX
      MATTERS...............................  26
    GENERAL INFORMATION.....................  28
    SHAREHOLDER COMMUNICATIONS..............  29
</TABLE>
    
 
PROSPECTUS
 
                                        2
<PAGE>   10
 
   
Under a master-feeder operating structure, each Fund seeks its investment
objective by investing all of its investable assets in a corresponding Portfolio
as described above. Each Portfolio's investment objective is identical to that
of its corresponding Fund. Whenever the phrase "all of the Fund's investable
assets" is used, it means that the only investment securities that will be held
by a Fund will be that Fund's interest in its corresponding Portfolio. AMR
Investment Services, Inc. ("Manager") provides investment management and
administrative services to the Portfolios, except for the Equity 500 Index
Portfolio, and administrative services to the Funds. Bankers Trust Company
("BT") provides investment advisory, administrative and other services to the
Equity 500 Index Portfolio. This master-feeder operating structure is different
from that of many other investment companies which directly acquire and manage
their own portfolios of securities. Accordingly, investors should carefully
consider this investment approach. See "Investment Objective, Policies and
Risks -- Additional Information About the Portfolios." A Fund may withdraw its
investment in a corresponding Portfolio at any time if the Mileage Trust's Board
of Trustees ("Mileage Trust Board") determines that it would be in the best
interest of that Fund and its shareholders to do so. Upon any such withdrawal,
that Fund's assets would be invested in accordance with the investment policies
and restrictions described in this Prospectus and the SAI.
    
 
TABLE OF FEES AND EXPENSES
 
Annual Operating Expenses (as a percentage of average net assets):
   
<TABLE>
<CAPTION>
                                                                                                          MONEY
                                           GROWTH                S&P 500     INTERMEDIATE     SHORT-      MARKET      MUNICIPAL
                                            AND       INT'L       INDEX          BOND          TERM       FUND -        MONEY
                               BALANCED    INCOME     EQUITY     FUND(1)       FUND(1)         BOND      MILEAGE       MARKET
                                 FUND       FUND       FUND      -------     ------------      FUND       CLASS         FUND
<S>                            <C>         <C>        <C>        <C>         <C>              <C>        <C>          <C>
MANAGEMENT FEES                  0.33%      0.33%      0.48%          %              %         0.25%       0.15%        0.15%
 
12B-1 FEES (AFTER WAIVERS)       0.00(2)    0.00(2)    0.00(2)        (2)            (2)       0.00(2)     0.25         0.25
 
OTHER EXPENSES (AFTER FEE
WAIVERS AND REIMBURSEMENTS)(3)   0.66       0.66       1.00                                    0.61        0.27         0.27
                                -----       ----       ----      -----        -------          ----       -----
 
TOTAL OPERATING EXPENSES
(AFTER FEE WAIVERS AND
REIMBURSEMENTS)(4)               0.99%      0.99%      1.48%          %              %         0.86%       0.67%        0.67%
                                =====       ====       ====      =====        =======          ====       =====       ======
 
<CAPTION>
                                   U.S.
                                GOVERNMENT
                                  MONEY
                                  MARKET
                                   FUND
<S>                             <C>
MANAGEMENT FEES                    0.15%
12B-1 FEES (AFTER WAIVERS)         0.00(2)
OTHER EXPENSES (AFTER FEE
WAIVERS AND REIMBURSEMENTS)(3)     0.47
TOTAL OPERATING EXPENSES
(AFTER FEE WAIVERS AND
REIMBURSEMENTS)(4)                 0.62%
                                 ======
</TABLE>
    
 
   
(1) Because the S&P 500 Index Fund and the Intermediate Bond Fund shares were
    not offered for sale prior to March 1, 1998, their Annual Operating Expenses
    are based on estimates.
    
 
   
(2) Absent fee waivers, "12b-1 Fees" for the Balanced Fund, the Growth and
    Income Fund, the International Equity Fund, the Short-Term Bond Fund and the
    U.S. Government Money Market Fund would be .25%. The Mileage Trust
    anticipates that the 12b-1 fee charged for the current fiscal year will be
    used to pay for advertising and AAdvantage miles. See "AAdvantage Miles."
    
 
   
(3) "Other Expenses" before fee waivers and reimbursements are estimated to be
    2.35% for the Balanced Fund, 1.30% for the Growth and Income Fund, 1.98% for
    the International Equity Fund, 3.09% for the Short-Term Bond Fund and 0.71%
    for the U.S. Government Money Market Fund.
    
 
   
(4) "Total Operating Expenses" before fee waivers and reimbursements are
    estimated to be 2.93% for the Balanced Fund, 1.88% for the Growth and Income
    Fund, 2.71% for the International Equity Fund, 3.19% for the Short-Term Bond
    Fund, 0.78% for the Money Market Fund -- Mileage Class, 0.80% for the
    Municipal Money Market Fund and 1.11% for the U.S. Government Money Market
    Fund.
    
 
    The above expenses reflect the expenses of each Fund and the Portfolio in
which it invests. The Mileage Trust Board believes that the aggregate per share
expenses of each Fund and its corresponding Portfolio will be approximately
equal to the expenses that the Fund would incur if its assets were invested
directly in the type of securities held by the Portfolio.
 
                                                                      PROSPECTUS
 
                                        3
<PAGE>   11
 
EXAMPLES
 
An investor in each Fund would directly or indirectly pay on a cumulative basis
the following expenses on a $1,000 investment assuming a 5% annual return:
 
   
<TABLE>
<CAPTION>
                                            1 YEAR          3 YEARS          5 YEARS          10 YEARS
<S>                                         <C>             <C>              <C>              <C>
BALANCED FUND                                $10              $32              $55              $121
 
GROWTH AND INCOME FUND                        10               32               55               121
 
INTERNATIONAL EQUITY FUND                     15               47               81               177
 
S&P 500 INDEX FUND
 
INTERMEDIATE BOND FUND
 
SHORT-TERM BOND FUND                           9               27               48               106
 
MONEY MARKET FUND                              7               21               37                83
 
MUNICIPAL MONEY MARKET FUND                    7               21               37                83
U.S. GOVERNMENT MONEY MARKET FUND              6               20               35                77
</TABLE>
    
 
    The purpose of the table above is to assist a potential investor in
understanding the various costs and expenses expected to be incurred directly or
indirectly as a shareholder in a Fund. Additional information may be found under
"Management and Administration of the Mileage Trust" and "Investment Advisers."
 
THE FOREGOING EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES MAY BE GREATER OR LESS THAN
THOSE SHOWN AND PERFORMANCE MAY BE BETTER OR WORSE THAN THE 5% ANNUAL RETURN
ASSUMED IN THE EXAMPLES.
 
FINANCIAL HIGHLIGHTS
 
   
    The financial highlights in the following tables have been derived from
financial statements of the Mileage Trust. The information has been audited by
Ernst & Young LLP, independent auditors. Such information should be read in
conjunction with the financial statements and the report of the independent
auditors appearing in the Annual Report incorporated in the SAI, which contains
further information about performance of the Funds and can be obtained by
investors without charge. Financial highlights are not available for the S&P 500
Index Fund and the Intermediate Bond Fund because they had not commenced
operations as of October 31, 1997.
    
 
PROSPECTUS
 
                                        4
<PAGE>   12
 
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
   
<TABLE>
<CAPTION>
                                                                            YEAR ENDED OCTOBER 31,
                                                 ----------------------------------------------------------------------------
                                                                        GROWTH AND
                                                     BALANCED             INCOME           INT'L EQUITY         SHORT-TERM
                                                   FUND(1)(3)(4)       FUND(1)(3)(4)        FUND(1)(3)       BOND FUND(1)(3)
                                                 -----------------   -----------------   -----------------   ----------------
                                                  1997      1996      1997      1996      1997      1996      1997      1996
                                                 -------   -------   -------   -------   -------   -------   -------   ------
<S>                                              <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>
 
NET ASSET VALUE, BEGINNING OF PERIOD(5)........            $ 13.97             $ 15.94             $ 13.15             $ 9.83
                                                 -------   -------   -------   -------   -------   -------   -------   ------
INCOME FROM INVESTMENT OPERATIONS:
  NET INVESTMENT INCOME(6).....................               0.49                0.34                0.20               0.59
  NET GAINS (LOSSES) ON SECURITIES (BOTH
    REALIZED AND UNREALIZED)(6)................               1.65                3.16                2.03             (0.18)
                                                 -------   -------   -------   -------   -------   -------   -------   ------
TOTAL FROM INVESTMENT OPERATIONS...............               2.14                3.50                2.23               0.41
                                                 -------   -------   -------   -------   -------   -------   -------   ------
LESS DISTRIBUTIONS:
  DIVIDENDS FROM NET INVESTMENT INCOME.........             (0.10)              (0.09)              (0.07)             (0.59)
  DISTRIBUTIONS FROM NET REALIZED GAINS ON
    SECURITIES.................................                 --                  --                  --                 --
                                                 -------   -------   -------   -------   -------   -------   -------   ------
TOTAL DISTRIBUTIONS............................             (0.10)              (0.09)              (0.07)             (0.59)
                                                 -------   -------   -------   -------   -------   -------   -------   ------
NET ASSET VALUE, END OF PERIOD.................            $ 16.01             $ 19.35             $ 15.31             $ 9.65
                                                 =======   =======   =======   =======   =======   =======   =======   ======
TOTAL RETURN (ANNUALIZED)......................              15.97%              22.77%              16.58%              4.55%
                                                 =======   =======   =======   =======   =======   =======   =======   ======
RATIOS/SUPPLEMENTAL DATA:
  NET ASSETS, END OF PERIOD (IN THOUSANDS).....            $ 2,495             $ 6,234             $ 3,387             $1,168
  RATIOS TO AVERAGE NET ASSETS
    (ANNUALIZED)(6)(7):
    EXPENSES...................................               1.01%               1.00%               1.48%              0.86%
    NET INVESTMENT INCOME......................               3.58%               2.13%               1.63%              6.08%
    PORTFOLIO TURNOVER RATE(8).................                 76%                 40%                 19%               304%
    AVERAGE COMMISSION RATE PAID(8)............            $0.0409             $0.0412             $0.0192                 --
</TABLE>
    
 
(1) The Funds commenced active operations on November 1, 1995. Prior to March 1,
    1997, the U.S. Government Money Market Fund was known as the American
    AAdvantage U.S. Treasury Money Market Mileage Fund and operated under
    different investment policies.
 
(2) The Platinum Class of the Money Market Mileage Fund commenced active
    operations on January 29, 1996 and at that time the existing shares of the
    Fund were designated as Mileage Class shares.
 
(3) Total return is calculated assuming an initial investment is made at the net
    asset value last calculated on the business day before the first day of each
    period reported, reinvestment of all dividends and capital gains
    distributions on the payable date and a sale at net asset value on the last
    day of each period reported.
 
(4) Capital Guardian Trust Company was replaced by Brandywine Asset Management,
    Inc. as an investment adviser to the Balanced Fund and the Growth and Income
    Fund on April 1, 1996.
 
   
(5) The net asset value per share for the Balanced, Growth and Income,
    International Equity and Short-Term Bond Funds has been adjusted for a stock
    split which occurred on November 1, 1995 in the ratio of 1.431690, 1.254705,
    1.502913 and 2.034588, respectively.
    
 
(6) Per share amounts and ratios reflect income and expenses assuming inclusion
    of each Fund's proportionate share of the income and expenses of its
    corresponding Portfolio.
 
   
(7) Operating results exclude expenses reimbursed by the Manager. The ratios of
    expenses to average net assets and of net investment income to average net
    assets were 2.93% and 1.66%, respectively for the Balanced Fund, 1.88% and
    1.25%, respectively for the Growth and Income Fund, 2.71% and 0.40%,
    respectively for the International Equity Fund, 3.19% and 3.75%,
    respectively for the Short-Term Bond Fund, 0.78% and 4.91%, respectively for
    the Money Market Fund -- Mileage Class, 0.80% and 3.00%, respectively for
    the Municipal Money Market Fund and 1.11% and 4.33%, respectively for the
    U.S. Government Money Market Fund, for the year ended October 31, 1996.
    
 
(8) On November 1, 1995 each Fund invested all of its investable assets in its
    corresponding Portfolio. Portfolio turnover rate and average commission rate
    paid are those of the corresponding Portfolio.
 
                                                                      PROSPECTUS
 
                                        5
<PAGE>   13
 
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
   
<TABLE>
<CAPTION>
                                                                                 YEAR ENDED OCTOBER 31,
                                                              ------------------------------------------------------------
                                                                    MONEY                                      U.S.
                                                                    MARKET              MUNICIPAL           GOVERNMENT
                                                                    FUND-                 MONEY                MONEY
                                                                   MILEAGE               MARKET               MARKET
                                                                 CLASS(1)(2)             FUND(1)              FUND(1)
                                                              ------------------   -------------------   -----------------
                                                               1997       1996      1997       1996       1997      1996
                                                              -------   --------   -------   ---------   -------   -------
<S>                                                           <C>       <C>        <C>       <C>         <C>       <C>
 
NET ASSET VALUE, BEGINNING OF PERIOD(5).....................            $   1.00             $    1.00             $  1.00
                                                              -------   --------   -------   ---------   -------   -------
INCOME FROM INVESTMENT OPERATIONS:
  NET INVESTMENT INCOME(6)..................................                0.05                  0.03                0.05
  NET GAINS (LOSSES) ON SECURITIES (BOTH REALIZED AND
    UNREALIZED)(6)..........................................                  --                    --                  --
                                                              -------   --------   -------   ---------   -------   -------
TOTAL FROM INVESTMENT OPERATIONS............................                0.05                  0.03                0.05
                                                              -------   --------   -------   ---------   -------   -------
LESS DISTRIBUTIONS:
  DIVIDENDS FROM NET INVESTMENT INCOME......................              (0.05)                (0.03)              (0.05)
  DISTRIBUTIONS FROM NET REALIZED GAINS ON SECURITIES.......                  --                    --                  --
                                                              -------   --------   -------   ---------   -------   -------
TOTAL DISTRIBUTIONS.........................................              (0.05)                (0.03)              (0.05)
                                                              -------   --------   -------   ---------   -------   -------
NET ASSET VALUE, END OF PERIOD..............................            $   1.00             $    1.00             $  1.00
                                                              =======   ========   =======   =========   =======   =======
TOTAL RETURN (ANNUALIZED)...................................                5.12%                 3.19%               4.98%
                                                              =======   ========   =======   =========   =======   =======
RATIOS/SUPPLEMENTAL DATA:
  NET ASSETS, END OF PERIOD (IN THOUSANDS)..................            $106,709             $  28,726             $10,638
  RATIOS TO AVERAGE NET ASSETS (ANNUALIZED)(6)(7):
    EXPENSES................................................                0.67%                 0.66%               0.62%
    NET INVESTMENT INCOME...................................                5.02%                 3.14%               4.82%
    PORTFOLIO TURNOVER RATE(8)..............................                  --                    --                  --
    AVERAGE COMMISSION RATE PAID(8).........................       --         --        --          --        --        --
</TABLE>
    
 
(1) The Funds commenced active operations on November 1, 1995. Prior to March 1,
    1997, the U.S. Government Money Market Fund was known as the American
    AAdvantage U.S. Treasury Money Market Mileage Fund and operated under
    different investment policies.
 
(2) The Platinum Class of the Money Market Mileage Fund commenced active
    operations on January 29, 1996 and at that time the existing shares of the
    Fund were designated as Mileage Class shares.
 
(3) Total return is calculated assuming an initial investment is made at the net
    asset value last calculated on the business day before the first day of each
    period reported, reinvestment of all dividends and capital gains
    distributions on the payable date and a sale at net asset value on the last
    day of each period reported.
 
(4) Capital Guardian Trust Company was replaced by Brandywine Asset Management,
    Inc. as an investment adviser to the Balanced Fund and the Growth and Income
    Fund on April 1, 1996.
 
(5) The net asset value per share for the Balanced, Growth and Income,
    International Equity and Limited-Term Income Funds has been adjusted for a
    stock split which occurred on November 1, 1995 in the ratio of 1.431690,
    1.254705, 1.502913 and 2.034588, respectively.
 
(6) Per share amounts and ratios reflect income and expenses assuming inclusion
    of each Fund's proportionate share of the income and expenses of its
    corresponding Portfolio.
 
(7) Operating results exclude expenses reimbursed by the Manager. The ratios of
    expenses to average net assets and of net investment income to average net
    assets were 2.93% and 1.66%, respectively for the Balanced Fund, 1.88% and
    1.25%, respectively for the Growth and Income Fund, 2.71% and 0.40%,
    respectively for the International Equity Fund, 3.19% and 3.75%,
    respectively for the Limited-Term Income Fund, 0.78% and 4.91%, respectively
    for the Money Market Fund -- Mileage Class, 0.80% and 3.00%, respectively
    for the Municipal Money Market Fund and 1.11% and 4.33%, respectively for
    the U.S. Government Money Market Fund, for the year ended October 31, 1996.
 
(8) On November 1, 1995 each Fund invested all of its investable assets in its
    corresponding Portfolio. Portfolio turnover rate and average commission rate
    paid are those of the corresponding Portfolio.
 
PROSPECTUS
 
                                        6
<PAGE>   14
 
INTRODUCTION
 
   
    The Mileage Trust is an open-end, diversified management investment company
organized as a Massachusetts business trust on February 22, 1995. The Funds are
separate investment portfolios of the Mileage Trust. Each Fund has a distinctive
investment objective and investment policies. Each Fund, except the S&P 500
Index Fund, invests all of its investable assets in a corresponding Portfolio of
the AMR Trust which has an identical investment objective. The S&P 500 Index
Fund invests all of its investable assets in the Equity 500 Index Portfolio,
which is a separate investment company advised by BT with an identical
investment objective. The Manager provides the Portfolios, except the Equity 500
Index Portfolio, with business and asset management services, including the
evaluation and monitoring of the investment advisers, and it provides the Funds
with administrative services. BT provides the Equity 500 Index Portfolio with
investment advisory, administrative and other services.
    
 
   
     Each Fund, except for the Money Market Fund, currently consists of one
class of shares. The Money Market Fund currently consists of two classes of
shares, the Mileage Class, as described in this Prospectus, and the Platinum
Class, which is available to customers of certain broker-dealers as an
investment for cash balances in their brokerage accounts. The Funds are
available to individuals and certain grantor trusts ("Trust Accounts"). For
further information, or to obtain a Platinum Class prospectus free of charge,
call (800) 967-9009.
    
 
    Although each class of shares of the Money Market Fund is designed to meet
the needs of different investors, each class of the Fund shares the same
portfolio of investments and a common investment objective. See "Investment
Objectives, Policies and Risks." Based on its value, a share of the Money Market
Fund, regardless of class, will receive a proportionate share of the investment
income and the gains (or losses) earned (or incurred) by the Fund. It also will
bear its proportionate share of expenses that are allocated to the Money Market
Fund as a whole. However, certain expenses are allocated separately to each
class of shares.
 
   
    The assets of the Balanced Portfolio, the Growth and Income Portfolio and
the International Equity Portfolio are allocated by the Manager among investment
advisers designated for each of those Portfolios. BT serves as the investment
adviser to the Equity 500 Index Portfolio. The assets of the Intermediate Bond
Portfolio are allocated by the Manager between the Manager and another
investment adviser. Investment decisions for the Short-Term Bond Portfolio and
the Money Market Portfolios are made directly by the Manager. With the exception
of the S&P 500 Index Fund, each investment adviser has discretion to purchase
and sell portfolio securities in accordance with the investment objectives,
policies and restrictions described in this Prospectus and in the SAI and by
specific investment strategies developed by the Manager. There is no guarantee
that a Fund will achieve its investment objective. See "Investment Advisers."
    
 
    Shares are offered without a sales charge at the net asset value next
determined after an investment is received and accepted. Shares will be redeemed
at the next share price calculated after receipt of a redemption order. See "How
to Purchase Shares" and "How to Redeem Shares."
 
    Each shareholder will receive American Airlines(R) AAdvantage(R) travel
awards program ("AAdvantage") miles.(2) AAdvantage miles will be posted monthly
to each shareholder's AAdvantage account at an annual rate of one mile for every
$10 invested in any Fund. See "AAdvantage Miles."
 
- - ---------------
 
 2 American Airlines and AAdvantage are registered trademarks of American
   Airlines, Inc.
 
                                                                      PROSPECTUS
 
                                        7
<PAGE>   15
 
INVESTMENT OBJECTIVES, POLICIES AND RISKS
 
   
    The investment objective and policies of each Fund and its corresponding
Portfolio are described below. Except as otherwise indicated, the investment
policies of any Fund may be changed at any time by the Mileage Trust Board to
the extent that such changes are consistent with the investment objective of the
applicable Fund. However, each Fund's investment objective may not be changed
without a majority vote of that Fund's outstanding shares, which is defined as
the lesser of (a) 67% of the shares of the applicable Fund present or
represented if the holders of more than 50% of the shares are present or
represented at the shareholders' meeting, or (b) more than 50% of the shares of
the applicable Fund (hereinafter, "majority vote"). Except for the Equity 500
Index Portfolio a Portfolio's investment objective may not be changed without a
majority vote of that Portfolio's interest holders. The investment objective of
the Equity 500 Index Portfolio is not a fundamental policy. Shareholders of the
S&P 500 Index Fund will receive thirty days' prior written notice with respect
to any change in the investment objective of the Equity 500 Index Portfolio.
    
 
   
    Each Fund has a fundamental investment policy which allows it to invest all
of its investable assets in its corresponding Portfolio. All other fundamental
investment policies and the non-fundamental investment policies of each Fund and
its corresponding Portfolio are identical. Therefore, although the following
discusses the investment policies of each Portfolio, the AMR Trust's Board of
Trustees ("AMR Trust Board") and the Equity 500 Index Portfolio's Board of
Trustees ("Equity 500 Index Portfolio Board"), it applies equally to each Fund
and each Board.
    
 
   
AMERICAN AADVANTAGE BALANCED MILEAGE FUND -- This Fund's investment objective is
to realize both income and capital appreciation. This Fund seeks its investment
objective by investing all of its investable assets in the Balanced Portfolio,
which invests primarily in equity and debt securities. Although equity
securities (such as stocks) will be purchased primarily for capital appreciation
and debt securities (such as bonds) will be purchased primarily for income
purposes, income and capital appreciation potential will be considered in
connection with all such investments. Excluding collateral for securities
loaned, ordinarily the Portfolio will have a minimum of 30% and a maximum of 70%
of its assets invested in equity securities and a minimum of 30% and a maximum
of 70% of its assets invested in debt securities which, at the time of purchase,
are rated in one of the four highest rating categories by all nationally
recognized statistical rating organizations ("Rating Organizations") rating that
security such as Standard & Poor's ("S&P") or Moody's Investor Services, Inc.
("Moody's") or, if unrated, are deemed to be of comparable quality by the
applicable investment adviser. Obligations rated in the fourth highest rating
category are limited to 25% of the Portfolio's debt allocation. Obligations
rated BBB or Baa by any Rating Organization may have speculative characteristics
and thus changes in economic conditions or other circumstances are more likely
to lead to a weakened capacity to make principal and interest payments than is
the case with higher grade bonds. See the SAI for a description of debt ratings.
The Portfolio, at the discretion of the investment advisers, may retain a
security that has been downgraded below the initial investment criteria. The
Portfolio usually invests between 50% and 65% of its assets in equity securities
and between 35% and 50% of its assets in debt securities. The remainder of the
Portfolio's assets may be invested in cash or cash equivalents, including
obligations that are permitted investments for the Money Market Portfolio, and
in other investment companies. However, when its investment advisers deem that
market conditions warrant, the Portfolio may, for temporary defensive purposes,
invest up to 100% of its assets in cash, cash equivalents and investment grade
short-term obligations.
    
 
   
    The Portfolio's investments in debt securities may include investments in
obligations of the U.S. Government or its agencies or instrumentalities,
including separately traded registered interest and principal securities
("STRIPS") and other zero coupon obligations; corporate bonds, notes and
debentures; non-convertible preferred stocks; mortgage-backed securities;
asset-backed securities; and domestic, Yankeedollar and Eurodollar bank deposit
notes, certificates of deposit, bonds and notes. Such obligations may have a
fixed, variable or floating rate of interest. See the SAI for a further
description of the foregoing securities. The value of the Portfolio's debt
investments will vary in response to interest rate changes as described in
"American AAdvantage Intermediate Bond Mileage Fund."
    
 
PROSPECTUS
 
                                        8
<PAGE>   16
 
     The Portfolio also may engage in dollar rolls or purchase or sell
securities on a "when-issued" or "forward commitment" basis. The purchase or
sale of when-issued securities enables an investor to hedge against anticipated
changes in interest rates and prices by locking in an attractive price or yield.
The price of when-issued securities is fixed at the time the commitment to
purchase or sell is made, but delivery and payment for the when-issued
securities take place at a later date, normally one to two months after the date
of purchase. During the period between purchase and settlement, no payment is
made by the purchaser to the issuer and no interest accrues to the purchaser.
Such transactions therefore involve a risk of loss if the value of the security
to be purchased declines prior to the settlement date or if the value of the
security to be sold increases prior to the settlement date. A sale of a
when-issued security also involves the risk that the other party will be unable
to settle the transaction. Dollar rolls are a type of forward commitment
transaction. Purchases and sales of securities on a forward commitment basis
involve a commitment to purchase or sell securities with payment and delivery to
take place at some future date, normally one to two months after the date of the
transaction. As with when-issued securities, these transactions involve certain
risks, but they also enable an investor to hedge against anticipated changes in
interest rates and prices. Forward commitment transactions are executed for
existing obligations, whereas in a when-issued transaction, the obligations have
not yet been issued. When purchasing securities on a when-issued or forward
commitment basis, a segregated account of liquid assets at least equal to the
value of purchase commitments for such securities will be maintained until the
settlement date.
 
    The Portfolio's equity investments may consist of common stocks, preferred
stocks and convertible securities, including foreign securities that are
represented by U.S. dollar-denominated American Depository Receipts traded in
the United States on exchanges and in the over-the-counter market. When
purchasing equity securities, primary emphasis will be placed on undervalued
securities with above average growth expectations. The Manager believes that
purchasing securities which the investment advisers believe are undervalued in
the market and that have above average growth potential will outperform other
investment styles over the longer term while minimizing volatility and downside
risk. The Manager will recommend that, with respect to portfolio management of
equity assets, the Mileage Trust retain only those investment advisers who, in
the Manager's opinion, utilize such an approach.
 
    BARROW, HANLEY, MEWHINNEY & STRAUSS, INC.; BRANDYWINE ASSET MANAGEMENT,
INC.; GSB INVESTMENT MANAGEMENT, INC.; HOTCHKIS AND WILEY; and INDEPENDENCE
INVESTMENT ASSOCIATES, INC. currently manage the assets of the Balanced
Portfolio. See "Investment Advisers."
 
AMERICAN AADVANTAGE GROWTH AND INCOME MILEAGE FUND -- This Fund's investment
objective is to realize long-term capital appreciation and current income. This
Fund seeks its investment objective by investing all of its investable assets in
the Growth and Income Portfolio, which invests primarily in equity securities.
Excluding collateral for securities loaned, ordinarily at least 80% of the
Portfolio's assets will be invested in equity securities consisting of common
stocks, preferred stocks, securities convertible into common stocks, and
securities having common stock characteristics, such as rights and warrants, and
foreign equity securities that are represented by U.S. dollar-denominated
American Depository Receipts traded in the United States on exchanges and in the
over-the-counter market. When purchasing equity securities, primary emphasis
will be placed on undervalued securities with above average growth expectations.
In order to seek either above average current income or capital appreciation
when interest rates are expected to decline, the Portfolio may invest in debt
securities which, at the time of purchase, are rated in one of the four highest
rating categories by all Rating Organizations rating that security or, if
unrated, are deemed to be of comparable quality by the applicable investment
adviser. Obligations rated in the fourth highest rating category are limited to
25% of the Portfolio's debt allocation. See "American AAdvantage Balanced
Mileage Fund" for a description of the risks involved with these obligations.
See the SAI for definitions of the foregoing securities and for a description of
debt ratings. The Portfolio also may invest in other investment companies or in
cash and cash equivalents, including obligations that are permitted investments
for the Money Market Portfolio. However, when its investment advisers deem that
market conditions warrant, the Portfolio may, for temporary defensive purposes,
invest up to 100% of its assets in cash, cash equivalents and investment grade
short-term obligations. In addition, the Portfolio may purchase or sell
securities on a when-issued or forward commitment basis. See "American
AAdvantage Balanced Mileage Fund" for a description of these transactions.
 
                                                                      PROSPECTUS
 
                                        9
<PAGE>   17
 
    BARROW, HANLEY, MEWHINNEY & STRAUSS, INC.; BRANDYWINE ASSET MANAGEMENT,
INC.; GSB INVESTMENT MANAGEMENT, INC.; HOTCHKIS AND WILEY; and INDEPENDENCE
INVESTMENT ASSOCIATES, INC. currently manage the assets of the Growth and Income
Portfolio. See "Investment Advisers."
 
AMERICAN AADVANTAGE INTERNATIONAL EQUITY MILEAGE FUND -- This Fund's investment
objective is to realize long-term capital appreciation. This Fund seeks its
investment objective by investing all of its investable assets in the
International Equity Portfolio, which invests primarily in equity securities of
issuers based outside the United States. Ordinarily the Portfolio will invest at
least 65% of its assets in common stocks and securities convertible into common
stocks of issuers in at least three different countries other than the United
States. However, excluding collateral for securities loaned, the Portfolio
generally invests in excess of 80% of its assets in such securities. The
remainder of the Portfolio's assets will be invested in non-U.S. debt securities
which, at the time of purchase, are rated in one of the three highest rating
categories by any Rating Organization or, if unrated, are deemed to be of
comparable quality by the applicable investment adviser and traded publicly on a
world market, or in cash or cash equivalents, including obligations that are
permitted investments for the Money Market Portfolio, or in other investment
companies. However, when its investment advisers deem that market conditions
warrant, the Portfolio may, for temporary defensive purposes, invest up to 100%
of its assets in cash, cash equivalents, other investment companies and
investment grade short-term obligations.
 
    The investment advisers select securities based upon a country's economic
outlook, market valuation and potential changes in currency exchange rates. When
purchasing equity securities, primary emphasis will be placed on undervalued
securities with above average growth expectations.
 
    Overseas investing carries potential risks not associated with domestic
investments. Such risks include, but are not limited to: (1) political and
financial instability abroad, including risk of nationalization or expropriation
of assets and the risk of war; (2) less liquidity and greater volatility of
foreign investments; (3) less public information regarding foreign companies;
(4) less government regulation and supervision of foreign stock exchanges,
brokers and listed companies; (5) lack of uniform accounting, auditing and
financial reporting standards; (6) delays in transaction settlement in some
foreign markets; (7) possible imposition of confiscatory foreign taxes; (8)
possible limitation on the removal of securities or other assets of the
Portfolio; (9) restrictions on foreign investments and repatriation of capital;
(10) currency fluctuations; (11) cost and possible restrictions of currency
conversion; (12) withholding taxes on dividends in foreign countries; and (13)
possible higher commissions, custodial fees and management costs than in the
U.S. market. These risks are often greater for investments in emerging or
developing countries.
 
    The Portfolio will limit its investments to those in countries which have
been recommended by the Manager and which have been approved by the AMR Trust
Board. Countries may be added or deleted with AMR Trust Board approval. In
determining which countries will be approved, the AMR Trust Board will evaluate
the risk factors set forth above and will particularly focus on the ability to
repatriate funds, the size and liquidity of a particular country's market and
the investment climate for foreign investors. The current foreign countries in
which the Portfolio may invest are Australia, Austria, Belgium, Canada, Denmark,
Finland, France, Germany, Hong Kong, Ireland, Italy, Japan, Malaysia, Mexico,
Netherlands, New Zealand, Norway, Portugal, Singapore, South Korea, Spain,
Sweden, Switzerland, and the United Kingdom.
 
    The Portfolio may trade forward foreign currency contracts ("forward
contracts"), which are "derivatives," to hedge currency fluctuations of
underlying stock or bond positions or in other circumstances permitted by the
Commodity Futures Trading Commission ("CFTC"). Forward contracts to sell foreign
currency may be used when the management of the Portfolio believes that the
currency of a particular foreign country may suffer a decline against the U.S.
dollar. Forward contracts are also used to set the exchange rate for a future
transaction. In this manner, the Portfolio may protect itself against a possible
loss resulting from an adverse change in the relationship between the U.S.
dollar or other currency which is being used for the security purchase and the
foreign currency in which the security is denominated during the period between
the date on which the security is purchased or sold and the date on which
payment is made or received. Forward contracts involve certain risks
 
PROSPECTUS
 
                                       10
<PAGE>   18
 
which include, but are not limited to: (1) imperfect correlation between the
securities hedged and the contracts themselves; and (2) possible decrease in the
total return of the Portfolio. Forward contracts are discussed in greater detail
in the SAI.
 
   
    The Portfolio also may trade currency futures, which are derivatives, for
the same reasons as for entering into forward contracts as set forth above.
Currency futures are traded on U.S. and foreign currency exchanges. The use of
currency futures also entails certain risks which include, but are not limited
to: (1) less liquidity due to daily limits on price fluctuation; (2) imperfect
correlation between the securities hedged and the contracts themselves; (3)
possible decrease in the total return of the Portfolio due to hedging; (4)
possible reduction in value for both the contracts and the securities being
hedged; and (5) potential losses in excess of the amounts invested in the
currency futures contracts themselves. The Portfolio may not enter into currency
futures contracts if the purchase or sale of such contract would cause the sum
of the Portfolio's initial and any variation margin deposits to exceed 5% of its
total assets. Currency futures contracts are discussed in greater detail in the
SAI.
    
 
    HOTCHKIS AND WILEY, MORGAN STANLEY ASSET MANAGEMENT INC. and TEMPLETON
INVESTMENT COUNSEL, INC. currently serve as investment advisers to the
International Equity Portfolio.
 
   
AMERICAN AADVANTAGE S&P 500 INDEX MILEAGE FUND -- This Fund's investment
objective is to provide investment results that, before expenses, correspond to
the total return (the combination of capital changes and income) of common
stocks publicly traded in the United States, as represented by the S&P 500. This
Fund seeks its investment objective by investing all of its investable assets in
the Equity 500 Index Portfolio which invests in common stocks of companies that
compose the S&P 500. The Fund offers investors a convenient means of
diversifying their holdings of common stocks while relieving those investors of
the administrative burdens typically associated with purchasing and holding
these instruments.
    
 
   
    The Portfolio is not managed according to traditional methods of "active"
investment management, which involve the buying and selling of securities based
upon economic, financial and market analyses and investment judgment. Instead,
the Portfolio, utilizing a "passive" or "indexing" investment approach, attempts
to replicate, before expenses, the performance of the S&P 500.
    
 
   
    Under normal conditions, the Portfolio will invest at least 80% of its
assets in common stocks of companies that compose the S&P 500. In seeking to
replicate the performance of the S&P 500, BT, the Portfolio's investment
adviser, will attempt over time to allocate the Portfolio's investments among
common stocks in approximately the same weightings as the S&P 500, beginning
with the heaviest-weighted stocks that make up a larger portion of the Index's
value. Over the long term, BT normally seeks a correlation between the
performance of the Portfolio, before expenses, and that of the S&P 500 of 0.98
or better. A figure of 1.00 would indicate perfect correlation. In the unlikely
event that the correlation is not achieved, the Equity 500 Index Portfolio Board
will consider alternative structures.
    
 
   
    BT utilizes a two-stage sampling approach in seeking to obtain the
objective. Stage one, which encompasses large capitalization stocks, maintains
the stock holdings at or near their benchmark weights. Large capitalization
stocks are defined as those securities that represent 0.10% or more of the
Index. In stage two, smaller stocks are analyzed and selected using risk
characteristics and industry weights in order to match the sector and risk
characteristics of the smaller companies in the S&P 500. This approach helps to
maximize portfolio liquidity while minimizing costs.
    
 
   
    BT generally will seek to match the composition of the S&P 500, but usually
will not invest the Portfolio's stock portfolio to mirror the Index exactly.
Because of the difficulty and expense of executing relatively small stock
transactions, the Portfolio may not always be invested in the less heavily
weighted S&P 500 stocks and may at times have its portfolio weighted differently
from the S&P 500. When the Portfolio's size is greater, BT expects to purchase
more of the stocks in the S&P 500 and to match the relative weighting of the S&P
500 more closely and anticipates that the Portfolio will be able to mirror,
before expenses, the performance of the S&P 500 with
    
 
                                                                      PROSPECTUS
 
                                       11
<PAGE>   19
 
   
little variance. In addition, the Portfolio may omit or remove any S&P 500 stock
from the Portfolio if, following objective criteria, BT judges the stock to be
insufficiently liquid or believes the merit of the investment has been
substantially impaired by extraordinary events or financial conditions. BT will
not purchase the stock of Bankers Trust New York Corporation, which is included
in the Index, and instead will overweight its holdings of companies engaged in
similar businesses.
    
 
   
    Under normal conditions, BT will attempt to invest as much of the
Portfolio's assets as is practical in common stocks included in the S&P 500.
However, the Portfolio may maintain up to 20% of its assets in short-term debt
securities and money market instruments hedged with stock index futures and
options to meet redemption requests or to facilitate the investment in common
stocks.
    
 
   
    When the Portfolio has cash from new investments in the Portfolio or holds a
portion of its assets in money market instruments, it may enter into stock index
futures or options to attempt to increase its exposure to the stock market.
Strategies the Portfolio could use to accomplish this include purchasing futures
contracts, writing put options, and purchasing call options. When the Portfolio
wishes to sell securities, because of shareholder redemptions or otherwise, it
may use stock index futures or options thereon to hedge against market risk
until the sale can be completed. These strategies could include selling futures
contracts, writing call options, and purchasing put options.
    
 
   
    BT will choose among futures and options strategies based on its judgment of
how best to meet the Portfolio's goals. In selecting futures and options, BT
will assess such factors as current and anticipated stock prices, relative
liquidity and price levels in the options and futures markets compared to the
securities markets, and the Portfolio's cash flow and cash management needs. If
BT judges these factors incorrectly, or if price changes in the Portfolio's
futures and options positions are not well correlated with those of its other
investments, the Portfolio could be hindered in the pursuit of the objective and
could suffer losses. The Portfolio could also be exposed to risks if it could
not close out its futures or options positions because of an illiquid secondary
market. BT will only use these strategies for cash management purposes. Futures
and options will not be used to increase portfolio risk above the level that
could be achieved using only traditional investment securities or to acquire
exposure to changes in the value of assets or indices that by themselves would
not be purchased for the Portfolio. Futures and options are discussed in greater
detail in the SAI.
    
 
   
    The Portfolio intends to stay invested in the securities described above to
the extent practical in light of the objective and long-term investment
perspective. However, the Portfolio's assets may be invested in short-term
instruments with remaining maturities of 397 days or less to meet anticipated
redemptions and expenses or for day-to-day operating purposes. Short-term
instruments consist of (1) short-term obligations of the U.S. Government, its
agencies, instrumentalities, authorities or political subdivisions; (2) other
short-term debt securities rated Aa or higher by Moody's or AA or higher by S&P
or, if unrated, of comparable quality in the opinion of BT; (3) commercial
paper; (4) bank obligations, including negotiable certificates of deposit, time
deposits and bankers' acceptances; and (5) repurchase agreements. At the time
the Portfolio invests in commercial paper, bank obligations or repurchase
agreements, the issuer or the issuer's parent must have outstanding debt rated
Aa or higher by Moody's or AA or higher by S&P or outstanding commercial paper
or bank obligations rated Prime-1 by Moody's or A-1 by S&P; or, if no such
ratings are available, the instrument must be of comparable quality in the
opinion of BT.
    
 
   
    The S&P 500 is a well-known stock market index that includes common stocks
of 500 companies from several industrial sectors representing a significant
portion of the market value of all common stocks publicly traded in the United
States, most of which are listed on the New York Stock Exchange (the
"Exchange"). Stocks in the S&P 500 are weighted according to their market
capitalization (the number of shares outstanding multiplied by the stock's
current price). BT believes that the performance of the S&P 500 is
representative of the performance of publicly traded common stocks in general.
The composition of the S&P 500 is determined by S&P and is based on such factors
as the market capitalization and trading activity of each stock and its adequacy
    
 
PROSPECTUS
 
                                       12
<PAGE>   20
 
   
as a representation of stocks in a particular industry group, and may be changed
from time to time. For more complete information about the Index, see the SAI.
    
 
   
    The Fund and the Portfolio are not sponsored, endorsed, sold or promoted by
S&P. S&P makes no representation or warranty, express or implied, to the owners
of the Fund or the Portfolio or any member of the public regarding the
advisability of investing in securities generally or in the Fund and the
Portfolio particularly or the ability of the S&P 500 to track general stock
market performance. S&P does not guarantee the accuracy and/or the completeness
of the S&P 500 or any data included therein.
    
 
   
    S&P MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO THE RESULTS TO BE OBTAINED
BY THE FUND OR THE PORTFOLIO, OWNERS OF THE FUND OR THE PORTFOLIO, OR ANY OTHER
PERSON OR ENTITY FROM THE USE OF THE S&P 500 OR ANY DATA INCLUDED THEREIN. S&P
MAKES NO EXPRESS OR IMPLIED WARRANTIES AND HEREBY EXPRESSLY DISCLAIMS ALL SUCH
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH
RESPECT TO THE S&P 500 OR ANY DATA INCLUDED THEREIN.
    
 
   
    The ability of the Fund and the Portfolio to meet their investment objective
depends to some extent on the cash flow experienced by the Fund and by the other
investors in the Portfolio, since investments and redemptions by shareholders of
the Fund generally will require the Portfolio to purchase or sell securities. BT
will make investment changes to accommodate cash flow in an attempt to maintain
the similarity of the Portfolio to the S&P 500. An investor should also be aware
that the performance of the S&P 500 is a hypothetical number that does not take
into account brokerage commissions and other costs of investing, unlike the
Portfolio which must bear these costs. Finally, since the Portfolio seeks to
track the S&P 500, BT generally will not attempt to judge the merits of any
particular stock as an investment.
    
 
   
AMERICAN AADVANTAGE INTERMEDIATE BOND MILEAGE FUND -- This Fund's investment
objective is to realize income and capital appreciation. As an investment
policy, the Fund primarily seeks income and secondarily seeks capital
appreciation. The Fund seeks its investment objective by investing all of its
investable assets in the Intermediate Bond Portfolio, which invests primarily in
debt obligations. Permissible investments include securities of the U.S.
Government and its agencies and instrumentalities, including STRIPS and other
zero coupon obligations; corporate bonds, notes and debentures; non-convertible
preferred stocks; mortgage-backed securities; asset-backed securities; domestic,
Yankeedollar and Eurodollar certificates of deposit, bank deposit notes, and
bank notes; other investment companies; and cash or cash equivalents including
obligations that are permitted investments for the Money Market Portfolio. Such
obligations may have a fixed, variable or floating rate of interest. At the time
of purchase, all such securities will be rated in one of the four highest rating
categories by all Rating Organizations rating such obligation or, if unrated,
will be deemed to be of comparable quality by the Manager or the investment
adviser. Obligations rated in the fourth highest rating category are limited to
25% of the Portfolio's total assets. See "American AAdvantage Balanced Mileage
Fund" for a description of the risks involved with these obligations. The
Portfolio, at the discretion of the Manager and the investment adviser, may
retain a security which has been downgraded below the initial investment
criteria. See the SAI for definitions of the foregoing securities and for a
description of debt ratings. Principal and/or interest payments for obligations
of the U.S. Government's agencies or instrumentalities may or may not be backed
by the full faith and credit of the U.S. Government.
    
 
   
    Although investments will not be restricted by the maturity of the
securities purchased, under normal circumstances, the Portfolio will seek to
maintain a dollar-weighted average duration of three to seven years. Because the
timing on return of principal for both asset-backed and mortgage-backed
securities is uncertain, in calculating the average weighted maturity of the
Portfolio, the maturity of these securities may be based on certain industry
conventions.
    
 
    Investments in Yankeedollar and Eurodollar bonds, notes and certificates of
deposit involve risks that differ from investments in securities of domestic
issuers. See "American AAdvantage Money Market Mileage Fund" for a description
of these risks. The Portfolio also may engage in dollar rolls, or purchase or
sell securities on a when-issued or forward commitment basis as described under
"American AAdvantage Balanced Mileage Fund."
 
                                                                      PROSPECTUS
 
                                       13
<PAGE>   21
 
   
    Mortgage-backed securities are securities representing interests in "pools"
of mortgages in which payments of both interest and principal on the securities
are made monthly, in effect, "passing through" monthly payments made by the
individual borrowers on the mortgage loans which underlie the securities (net of
fees paid to the issuer or guarantor of the securities). Early repayment of
principal on mortgage pass-through securities (arising from prepayments of
principal due to sale of the underlying property, refinancing, or foreclosure,
net of fees and costs which may be incurred) may expose the Portfolio to a lower
rate of return upon reinvestment of principal. Also, if a security subject to
prepayment has been purchased at a premium, in the event of prepayment, the
value of the premium would be lost. Like other debt securities, when interest
rates rise, the value of mortgage-related securities generally will decline;
however, when interest rates decline, the value of mortgage-related securities
with prepayment features may not increase as much as other debt securities.
    
 
    Payment of principal and interest on some mortgage pass-through securities
(but not the market value of the securities themselves) may be guaranteed by the
full faith and credit of the U.S. Government (such as in the case of securities
guaranteed by the Government National Mortgage Association ("GNMA")) or
guaranteed by agencies or instrumentalities of the U.S. Government (such as in
the case of securities guaranteed by the Federal National Mortgage Association
("FNMA") or the Federal Home Loan Mortgage Corporation ("FHLMC"), which are
supported only by the discretionary authority of the U.S. Government to purchase
the agency's obligations). Mortgage pass-through securities created by
non-governmental issuers (such as commercial banks, savings and loan
institutions, private mortgage insurance companies, mortgage bankers and other
secondary market issuers) may be supported with various credit enhancements such
as pool insurance, guarantees issued by governmental entities, a letter of
credit from a bank or senior/subordinated structures.
 
    Collateralized mortgage obligations ("CMOs") are hybrid instruments with
characteristics of both mortgage-backed bonds and mortgage pass-through
securities. Similar to a mortgage pass-through, interest and prepaid principal
on a CMO are paid, in most cases, monthly. CMOs may be collateralized by whole
mortgage loans but are more typically collateralized by portfolios of mortgage
pass-through securities guaranteed by GNMA, FHLMC or FNMA. CMOs are structured
in multiple classes, with each class bearing a different stated maturity or
interest rate.
 
    The Portfolio is permitted to invest in asset-backed securities, subject to
the Portfolio's rating and quality requirements. Through the use of trusts and
special purpose subsidiaries, various types of assets, primarily home equity
loans, automobile and credit card receivables, and other types of receivables or
other assets as well as purchase contracts, financing leases and sales
agreements entered into by municipalities, are securitized in pass-through
structures similar to the mortgage pass-through structures described above.
Consistent with the Fund's and the Portfolio's investment objective, policies
and quality standards, the Portfolio may invest in these and other types of
asset-backed securities which may be developed in the future.
 
    Asset-backed securities involve certain risks that do not exist with
mortgage-related securities, resulting mainly from the fact that asset-backed
securities do not usually contain the benefit of a complete security interest in
the related collateral. For example, credit card receivables generally are
unsecured and the debtors are entitled to the protection of a number of state
and federal consumer credit laws, some of which may reduce the ability to obtain
full payment. In the case of automobile receivables, due to various legal and
economic factors, proceeds from repossessed collateral may not always be
sufficient to support payments on the securities. The risks associated with
asset-backed securities are often reduced by the addition of credit
enhancements, such as a letter of credit from a bank, excess collateral or a
third-party guarantee.
 
    The market value of fixed rate securities, and thus the net asset value of
this Portfolio's shares, is expected to vary inversely with movements in
interest rates. The market value of variable and floating rate instruments will
not vary as much due to the periodic adjustments in their interest rates. An
adjustment which increases the interest rate of such securities should reduce or
eliminate declines in market value resulting from a prior upward movement in
interest rates, and an adjustment which decreases the interest rate of such
securities should reduce or eliminate increases in market value resulting from a
prior downward movement in interest rates.
 
PROSPECTUS
 
                                       14
<PAGE>   22
 
   
    The Manager and Barrow, Hanley, Mewhinney & Strauss, Inc. currently manage
the assets of the Intermediate Bond Portfolio. See "Investment Advisers."
    
 
   
AMERICAN AADVANTAGE SHORT-TERM BOND MILEAGE FUND -- This Fund's investment
objective is to realize income and capital appreciation. As an investment
policy, the Fund primarily seeks income and secondarily seeks capital
appreciation. The Fund seeks its investment objective by investing all of its
investable assets in the Short-Term Bond Portfolio, which invests primarily in
debt obligations. Permissible investments include securities of the U.S.
Government and its agencies and instrumentalities, including STRIPS and other
zero coupon obligations; corporate bonds, notes and debentures; non-convertible
preferred stocks; mortgage-backed securities; asset-backed securities; domestic,
Yankeedollar and Eurodollar certificates of deposit, bank deposit notes, and
bank notes; other investment companies; and cash or cash equivalents including
obligations that are permitted investments for the Money Market Portfolio. Such
obligations may have a fixed, variable or floating rate of interest. At the time
of purchase, all such securities will be rated in one of the four highest rating
categories by all Rating Organizations rating such obligation or, if unrated,
will be deemed to be of comparable quality by the Manager. Obligations rated in
the fourth highest rating category are limited to 25% of the Portfolio's total
assets. See "American AAdvantage Balanced Mileage Fund" and "American AAdvantage
Intermediate Bond Mileage Fund" for a description of the risks involved with
these obligations. The Portfolio, at the discretion of the Manager, may retain a
security which has been downgraded below the initial investment criteria. See
the SAI for definitions of the foregoing securities and for a description of
debt ratings. Principal and/or interest payments for obligations of the U.S.
Government's agencies or instrumentalities may or may not be backed by the full
faith and credit of the U.S. Government.
    
 
   
    Investments in Yankeedollar and Eurodollar bonds, notes and certificates of
deposit involve risks that differ from investments in securities of domestic
issuers. See "American AAdvantage Money Market Mileage Fund" for a description
of these risks. See "American AAdvantage Intermediate Bond Mileage Fund" for a
description of the risks associated with investments in mortgage-backed
securities, CMOs and asset-backed securities and for an explanation of how the
Portfolio's debt instruments will vary in response to interest rate changes. The
Portfolio also may engage in dollar rolls, or purchase or sell securities on a
when-issued or forward commitment basis as described under "American AAdvantage
Balanced Mileage Fund."
    
 
   
    Although investments will not be restricted by either maturity or duration
of the securities purchased, under normal circumstances, the Portfolio will seek
to maintain a dollar-weighted average duration of one to three years. Because
the timing on return of principal for both asset-backed and mortgage-backed
securities is uncertain, in calculating the average weighted maturity of the
Portfolio, the duration of these securities may be based on certain industry
conventions.
    
 
   
    The Manager serves as the sole active investment adviser to the Short-Term
Bond Portfolio.
    
 
MONEY MARKET FUNDS -- The investment objectives of the Money Market Funds are
current income, liquidity and the maintenance of a stable $1.00 price per share.
The Money Market Funds seek to achieve these objectives by investing all of
their investable assets in the Money Market Portfolios, which invest in high
quality, U.S. dollar-denominated short-term obligations that have been
determined by the Manager or the AMR Trust Board to present minimal credit
risks. Portfolio investments are valued based on the amortized cost valuation
technique pursuant to Rule 2a-7 under the Investment Company Act of 1940 ("1940
Act"). See the SAI for an explanation of the amortized cost valuation method.
Obligations in which the Money Market Portfolios invest generally have remaining
maturities of 397 days or less, although instruments subject to repurchase
agreements and certain variable and floating rate obligations may bear longer
final maturities. The average dollar-weighted portfolio maturity of each Money
Market Portfolio will not exceed 90 days. The Manager serves as the sole
investment adviser to the Money Market Funds. See "Management and Administration
of the Mileage Trust."
 
AMERICAN AADVANTAGE MONEY MARKET MILEAGE FUND -- The Fund's corresponding
Portfolio may invest in obligations permitted to be purchased under Rule 2a-7 of
the 1940 Act including, but not limited to, (1) obligations of the
 
                                                                      PROSPECTUS
 
                                       15
<PAGE>   23
 
   
U.S. Government or its agencies or instrumentalities; (2) loan participation
interests, medium-term notes, funding agreements and asset-backed securities;
(3) domestic, Yankeedollar and Eurodollar certificates of deposit, time
deposits, bankers' acceptances, commercial paper, bank deposit notes and other
promissory notes including floating or variable rate obligations issued by U.S.
or foreign bank holding companies and their bank subsidiaries, branches and
agencies; and (4) repurchase agreements involving the obligations listed above.
The Money Market Portfolio will invest only in issuers or instruments that at
the time of purchase (1) have received the highest short-term rating by two
Rating Organizations such as "A-1" by S&P and "P-1" by Moody's; (2) are single
rated and have received the highest short-term rating by a Rating Organization;
or (3) are unrated, but are determined to be of comparable quality by the
Manager pursuant to guidelines approved by the AMR Trust Board and subject to
ratification by the AMR Trust Board. See the SAI for definitions of the
foregoing instruments and rating systems. The Portfolio may invest in other
investment companies. The Portfolio also may purchase or sell securities on a
when-issued or forward commitment basis as described under "American AAdvantage
Balanced Mileage Fund."
    
 
    The Portfolio will invest more than 25% of its assets in obligations issued
by the banking industry. However, for temporary defensive purposes during
periods when the Manager believes that maintaining this concentration may be
inconsistent with the best interest of shareholders, the Portfolio may not
maintain this concentration.
 
    Investments in Eurodollar (U.S. dollar obligations issued outside the United
States by domestic or foreign entities) and Yankeedollar (U.S. dollar
obligations issued inside the United States by foreign entities) obligations
involve additional risks. Most notably, there generally is less publicly
available information about foreign issuers; there may be less governmental
regulation and supervision; foreign issuers may use different accounting and
financial standards; and the adoption of foreign governmental restrictions may
affect adversely the payment of principal and interest on foreign investments.
In addition, not all foreign branches of United States banks are supervised or
examined by regulatory authorities as are United States banks, and such branches
may not be subject to reserve requirements.
 
    Variable amount master demand notes in which the Portfolio may invest are
unsecured demand notes that permit the indebtedness thereunder to vary, and
provide for periodic adjustments in the interest rate. Because master demand
notes are direct lending arrangements between the Portfolio and the issuer, they
are not normally publicly traded. There is no secondary market for the notes;
however, the period of time remaining until payment of principal and accrued
interest can be recovered under a variable amount master demand note generally
will not exceed seven days. To the extent this period is exceeded, the note in
question would be considered illiquid. Issuers of variable amount master demand
notes must satisfy the same criteria as set forth for other promissory notes
(e.g. commercial paper). The Portfolio will invest in variable amount master
demand notes only when such notes are determined by the Manager, pursuant to
guidelines established by the AMR Trust Board, to be of comparable quality to
rated issuers or instruments eligible for investment by the Portfolio. In
determining average dollar-weighted portfolio maturity, a variable amount master
demand note will be deemed to have a maturity equal to the longer of the period
of time remaining until the next readjustment of the interest rate or the period
of time remaining until the principal amount can be recovered from the issuer on
demand.
 
AMERICAN AADVANTAGE MUNICIPAL MONEY MARKET MILEAGE FUND -- The Fund's
corresponding Portfolio may invest in municipal obligations issued by or on
behalf of the governments of states, territories, or possessions of the United
States; the District of Columbia; and their political subdivisions, agencies and
instrumentalities if the interest these obligations provide is generally exempt
from federal income tax. The Municipal Money Market Portfolio will invest only
in issuers or instruments that at the time of purchase (1) are guaranteed by the
U.S. Government, its agencies, or instrumentalities; (2) are secured by letters
of credit that are irrevocable and issued by banks which qualify as authorized
issuers for the Money Market Portfolio (see "American AAdvantage Money Market
Mileage Fund"); (3) are guaranteed by one or more municipal bond insurance
policies that are noncancelable and are issued by third-party guarantors
possessing the highest claims-paying rating from a Rating Organization; (4) have
received one of the two highest short-term ratings from at least two Rating
Organizations; (5) are single rated and have received one of the two highest
short-term ratings from that Rating Organization; (6) have no short-term rating
but the instrument is comparable to the issuer's rated short-term debt; (7) have
no short-term rating (or
 
PROSPECTUS
 
                                       16
<PAGE>   24
 
comparable rating) but have received one of the top two long-term ratings from
all Rating Organizations rating the issuer or instrument; or (8) are unrated,
but are determined to be of comparable quality by the Manager pursuant to
guidelines approved by, and subject to the oversight of, the AMR Trust Board.
The Portfolio also may invest in other investment companies. Ordinarily at least
80% of the Portfolio's net assets will be invested in municipal obligations the
interest from which is exempt from regular federal income tax. However, should
market conditions warrant, the Portfolio may invest up to 20% (or for temporary
defensive purposes, up to 100%) of its assets in eligible investments for the
Money Market Portfolio which are subject to federal income tax.
 
    The Portfolio may invest in certain municipal obligations which have rates
of interest that are adjusted periodically according to formulas intended to
minimize fluctuations in the values of these instruments. These instruments,
commonly known as variable rate demand obligations, are long-term instruments
which allow the purchaser, at its discretion, to redeem securities before their
final maturity at par plus accrued interest upon notice (typically 7 to 30
days).
 
    Municipal obligations may be backed by the full taxing power of a
municipality ("general obligations"), or by the revenues from a specific project
or the credit of a private organization ("revenue obligations"). Some municipal
obligations are collateralized as to payment of principal and interest by an
escrow of U.S. Government or federal agency obligations, while others are
insured by private insurance companies, while still others may be supported by
letters of credit furnished by domestic or foreign banks. The Portfolio's
investments in municipal obligations may include fixed, variable, or floating
rate general obligations and revenue obligations (including municipal lease
obligations and resource recovery obligations); zero coupon obligations and
asset-backed obligations; variable rate auction and residual interest
obligations; tax, revenue, or bond anticipation notes; tax-exempt commercial
paper; and purchase obligations that are subject to restrictions on resale. See
the SAI for a further discussion of the foregoing obligations. The Portfolio may
purchase or sell obligations on a when-issued or forward commitment basis as
described under "American AAdvantage Balanced Mileage Fund."
 
    The Portfolio may invest more than 25% of the value of its total assets in
municipal obligations which are related in such a way that an economic, business
or political development or change affecting one such security would also affect
the other securities; for example, securities the interest of which is paid from
revenues of similar types of projects, or securities whose issuers are located
in the same state. As a result, the Portfolio may be subject to greater risk
compared to a fund that does not follow this practice. However, the Manager
believes this risk is mitigated because it is anticipated that most of the
Portfolio's assets will be insured or backed by bank letters of credit.
Additionally, the Portfolio may invest more than 25% of the value of its total
assets in industrial development bonds which, although issued by industrial
development authorities, may be backed only by the assets and revenues of the
non-governmental users.
 
    The Portfolio also may invest in municipal obligations that constitute
"private activity obligations." These include obligations that finance student
loans, residential rental projects, and solid waste disposal facilities. To the
extent the Portfolio earns interest income on private activity obligations,
shareholders will be required to treat the portion of the Fund's distributions
attributable to its share of such interest as a "tax preference item" for
purposes of determining their liability for the federal alternative minimum tax
("AMT") and, as a result, may become subject to (or increase their liability
for) the AMT. Shareholders should consult their own tax advisers to determine
whether they may be subject to the AMT. The Portfolio may invest in private
activity obligations without limitation and it is anticipated that a substantial
portion of the Portfolio's assets will be invested in these obligations. As a
result, a substantial portion of the Fund's distributions may be a tax
preference item, which will reduce the net return from the Fund for taxpayers
subject to the AMT. Interest on "qualified" private activity obligations is
exempt from federal income tax.
 
AMERICAN AADVANTAGE U.S. GOVERNMENT MONEY MARKET MILEAGE FUND -- The Fund's
corresponding Portfolio will invest exclusively in obligations issued or
guaranteed by the U.S. Government, its agencies or instrumentalities and
repurchase agreements which are collateralized by such obligations. U.S.
Government securities include direct obligations of the U.S. Treasury (such as
Treasury bills, Treasury notes and Treasury bonds). The Fund may
 
                                                                      PROSPECTUS
 
                                       17
<PAGE>   25
 
invest in securities issued by the Agency for International Development, Farmers
Home Administration, Farm Credit Banks, Federal Home Loan Bank, Federal
Intermediate Credit Bank, Federal Financing Bank, Federal Land Bank, FNMA, GNMA,
General Services Administration, Rural Electrification Administration, Small
Business Administration, Tennessee Valley Authority, and others. Some of these
obligations, such as those issued by the Federal Home Loan Bank and FHLMC, are
supported only by the credit of the agency or instrumentality issuing the
obligation and the discretionary authority of the U.S. Government to purchase
the agency's obligations. Counterparties for repurchase agreements must be
approved by the AMR Trust Board. See the SAI for a further discussion of the
foregoing obligations. The Portfolio may purchase or sell securities on a
when-issued or forward commitment basis, as described under "American AAdvantage
Balanced Mileage Fund."
 
OTHER INVESTMENT POLICIES -- In addition to the investment policies described
previously, each Portfolio also may lend its securities, enter into fully
collateralized repurchase agreements, and invest in private placement offerings.
 
   
    SECURITIES LENDING. Each Portfolio (except for the Equity 500 Index
Portfolio) may lend securities to broker-dealers or other institutional
investors pursuant to agreements requiring that the loans be continuously
secured by any combination of cash, securities of the U.S. Government and its
agencies and instrumentalities and approved bank letters of credit that at all
times equal at least 100% of the market value of the loaned securities. Such
loans will not be made if, as a result, the aggregate amount of all outstanding
securities loans for any Portfolio of the AMR Trust exceeds 33 1/3% of its total
assets. A Portfolio continues to receive interest on the securities loaned and
simultaneously earns either interest on the investment of the cash collateral or
fee income if the loan is otherwise collateralized. Should the borrower of the
securities fail financially, there is a risk of delay in recovery of the
securities or loss of rights in the collateral. However, the Portfolios seek to
minimize this risk by making loans only to borrowers which are deemed by the
Manager to be of good financial standing and which have been approved by the AMR
Trust Board. For purposes of complying with each Portfolio's investment policies
and restrictions, collateral received in connection with securities loans will
be deemed an asset of a Portfolio to the extent required by law. Except for the
Equity 500 Index Portfolio, the Manager will receive compensation for
administrative and oversight functions with respect to securities lending. The
amount of such compensation will depend on the income generated by the loan of
each Portfolio's securities. The SEC has granted exemptive relief that permits
the Portfolios to invest cash collateral received from securities lending
transactions in shares of one or more private investment companies managed by
the Manager. Subject to receipt of exemptive relief from the SEC, the Portfolios
also may invest cash collateral received from securities lending transactions in
shares of one or more registered investment companies managed by the Manager.
See the SAI for further information regarding loan transactions.
    
 
   
    REPURCHASE AGREEMENTS. A repurchase agreement is an agreement under which
securities are acquired by a Portfolio from a securities dealer or bank subject
to resale at an agreed upon price on a later date. The acquiring Portfolio bears
a risk of loss in the event that the other party to a repurchase agreement
defaults on its obligations and the Portfolio is delayed or prevented from
exercising its rights to dispose of the collateral securities. However, the
investment advisers or the Manager attempt to minimize this risk by entering
into repurchase agreements only with financial institutions which are deemed to
be of good financial standing and which have been approved by the AMR Trust
Board or the Equity 500 Index Portfolio Board, as appropriate. See the SAI for
more information regarding repurchase agreements.
    
 
    PRIVATE PLACEMENT OFFERINGS. Investments in private placement offerings are
made in reliance on the "private placement" exemption from registration afforded
by Section 4(2) of the Securities Act of 1933 (the "1933 Act"), and resold to
qualified institutional buyers under Rule 144A under the 1993 Act ("Section 4(2)
securities"). Section 4(2) securities are restricted as to disposition under the
federal securities laws, and generally are sold to institutional investors, such
as the Portfolios, that agree they are purchasing the securities for investment
and not with an intention to distribute to the public. Any resale by the
purchaser must be in an exempt transaction and may be accomplished in accordance
with Rule 144A. Section 4(2) securities normally are resold to other
institutional investors like the Portfolios through or with the assistance of
the issuer or investment dealers who make a market in the Section 4(2)
securities, thus providing liquidity. The Money Market Portfolios will not
 
PROSPECTUS
 
                                       18
<PAGE>   26
 
   
invest more than 10% (and the Balanced, Growth and Income, International Equity,
S&P 500 Index, Intermediate Bond and Short-Term Bond Portfolios, no more than
15%) of their respective assets in Section 4(2) securities and other illiquid
securities unless the applicable investment adviser determines, by continuous
reference to the appropriate trading markets and pursuant to guidelines approved
by the AMR Trust Board or the Equity 500 Index Portfolio Board, that any Section
4(2) securities held by such Portfolio in excess of this level are at all times
liquid.
    
 
   
    The AMR Trust Board, the Equity 500 Index Portfolio Board and the applicable
investment adviser, pursuant to the guidelines approved by the respective
Boards, will carefully monitor the Portfolios' investments in Section 4(2)
securities sold and offered under Rule 144A, focusing on such important factors,
among others, as: valuation, liquidity, and availability of information.
Investments in Section 4(2) securities could have the effect of reducing a
Portfolio's liquidity to the extent that qualified institutional buyers no
longer wish to purchase these restricted securities.
    
 
   
BROKERAGE PRACTICES AND PORTFOLIO TURNOVER -- Each investment adviser will place
its own orders to execute securities transactions which are designed to
implement the applicable Portfolio's investment objective and policies. In
placing such orders, each investment adviser will seek the best available price
and most favorable execution. The full range and quality of services offered by
the executing broker or dealer will be considered when making these
determinations. Pursuant to written guidelines approved by the AMR Trust Board
or the Equity 500 Index Portfolio Board, as appropriate, an investment adviser
of a Portfolio, or its affiliated broker-dealer, may execute portfolio
transactions and receive usual and customary brokerage commissions (within the
meaning of Rule 17e-1 of the 1940 Act) for doing so.
    
 
   
    The Money Market Portfolios, the Intermediate Bond Portfolio and the
Short-Term Bond Portfolio normally will not incur any brokerage commissions on
their transactions because money market and debt instruments are generally
traded on a "net" basis with dealers acting as principal for their own accounts
and without a stated commission. The price of the obligation, however, usually
includes a profit to the dealer. Obligations purchased in underwritten offerings
include a fixed amount of compensation to the underwriter, generally referred to
as the underwriter's concession or discount. No commissions or discounts are
paid when securities are purchased directly from an issuer.
    
 
   
    No Portfolio, other than the Short-Term Bond Portfolio, currently expects
its portfolio turnover rate to exceed 100%. The portfolio turnover rate for the
Short-Term Bond Portfolio for the year ended October 31, 1997 was     %. A
Portfolio's turnover rate, or the frequency of portfolio transactions, will vary
from year to year depending on market conditions and the Portfolio's cash flows.
High portfolio activity increases a Portfolio's transaction costs, including
brokerage commissions, and may result in a greater number of taxable
transactions.
    
 
   
ADDITIONAL INFORMATION ABOUT THE PORTFOLIOS -- As previously described,
investors should be aware that each Fund, unlike mutual funds which directly
acquire and manage their own portfolios of securities, seeks to achieve its
investment objective by investing all of its investable assets in a
corresponding Portfolio of the AMR Trust, which is a separate investment
company, or in the Equity 500 Index Portfolio, which is a separate investment
company advised by BT. Since a Fund will invest only in its corresponding
Portfolio, that Fund's shareholders will acquire only an indirect interest in
the investments of the Portfolio.
    
 
   
    The Manager expects, although it cannot guarantee, that the Mileage Trust
will achieve economies of scale by investing in the AMR Trust and the Equity 500
Index Portfolio. In addition to selling their interests to the Funds, the
Portfolios sell their interests to other non-affiliated investment companies
and/or other institutional investors. All institutional investors in a Portfolio
pay a proportionate share of the Portfolio's expenses and invest in that
Portfolio on the same terms and conditions. However, other investment companies
investing all of their assets in a Portfolio, are not required to sell their
shares at the same public offering price as a Fund and may charge different
sales commissions. Therefore, investors in a Fund may experience different
returns from investors in another investment company which invests exclusively
in that Fund's corresponding Portfolio.
    
 
                                                                      PROSPECTUS
 
                                       19
<PAGE>   27
 
    The Fund's investment in a Portfolio may be affected materially by the
actions of large investors in that Portfolio, if any. For example, as with all
open-end investment companies, if a large investor were to redeem its interest
in a Portfolio, that Portfolio's remaining investors could experience higher pro
rata operating expenses, thereby producing lower returns. As a result, that
Portfolio's security holdings may become less diverse, resulting in increased
risk. Institutional investors in a Portfolio that have a greater pro rata
ownership interest in the Portfolio than the Fund could have effective voting
control over the operation of that Portfolio. A change in a Portfolio's
fundamental objective, policies and restrictions, which is not approved by the
shareholders of its corresponding Fund could require that Fund to redeem its
interest in the Portfolio. Any such redemption could result in a distribution in
kind of portfolio securities (as opposed to a cash distribution) by the
Portfolio. Should such a distribution occur, that Fund could incur brokerage
fees or other transaction costs in converting such securities to cash. In
addition, a distribution in kind could result in a less diversified portfolio of
investments for that Fund and could affect its liquidity adversely.
 
   
    The Portfolios' and their corresponding Funds' investment objectives and
policies are described above. See "Investment Restrictions" for a description of
their investment restrictions. The investment objective of a Fund can be changed
only with shareholder approval. The approval of a Fund and of other investors in
its corresponding Portfolio, if any, is not required to change the investment
objective, policies or limitations of that Portfolio, unless otherwise
specified. Written notice will be provided to shareholders of a Fund within
thirty days prior to any changes in its corresponding Portfolio's investment
objective. If the investment objective of a Portfolio changes and the
shareholders of its corresponding Fund do not approve a parallel change in that
Fund's investment objective, the Fund would seek an alternative investment
vehicle or the Manager and the investment advisers would actively manage the
Fund.
    
 
   
    See "Management and Administration of the Trusts" for a complete description
of the investment management fee and other expenses associated with a Fund's
investment in its corresponding Portfolio. This Prospectus and the SAI contain
more detailed information about each Fund and its corresponding Portfolio,
including information related to (1) the investment objective, policies and
restrictions of each Fund and its corresponding Portfolio, (2) the Board of
Trustees and officers of the Mileage Trust, the AMR Trust and the Equity 500
Index Portfolio Board, (3) brokerage practices, (4) the Funds' shares, including
the rights and liabilities of its shareholders, (5) additional performance
information, including the method used to calculate yield and total return and
(6) the determination of the value of each Fund's shares.
    
 
INVESTMENT RESTRICTIONS
 
   
    The following fundamental investment restrictions and the non-fundamental
investment restriction are identical for each Fund and its corresponding
Portfolio. Therefore, although the following discusses the investment
restrictions of each Portfolio, it applies equally to each Fund. The following
fundamental investment restrictions may be changed with respect to a particular
Fund by the majority vote of that Fund's outstanding shares or with respect to a
Portfolio by the majority vote of that Portfolio's interest holders. No
Portfolio may:
    
 
    - Invest more than 5% of its total assets (taken at market value) in
      securities of any one issuer, other than obligations issued by the U.S.
      Government, its agencies and instrumentalities, or purchase more than 10%
      of the voting securities of any one issuer, with respect to 75% of a
      Portfolio's total assets. In addition, although not a fundamental
      investment restriction and therefore subject to change without shareholder
      vote, the Money Market Portfolio and the U.S. Government Money Market
      Portfolio apply this restriction with respect to 100% of their assets.
 
    - Invest more than 25% of its total assets in the securities of companies
      primarily engaged in any one industry, provided that: (i) this limitation
      does not apply to obligations issued or guaranteed by the U.S. Government,
      its agencies and instrumentalities; (ii) municipalities and their agencies
      and authorities are not deemed to be industries; and (iii) financial
      service companies are classified according to the end users of their
      services (for example, automobile finance, bank finance, and diversified
      finance will be
 
PROSPECTUS
 
                                       20
<PAGE>   28
 
      considered separate industries). With respect to the Money Market
      Portfolio, this restriction does not apply to the banking industry.
 
   
     The following non-fundamental investment restriction may be changed with
respect to a particular Fund by a vote of a majority of the Mileage Trust Board
or with respect to a Portfolio by a vote of a majority of the AMR Trust Board or
the Equity 500 Index Portfolio Board, as appropriate: no Portfolio may invest
more than 15% (or, with respect to any Money Market Portfolio, 10%) of its net
assets in illiquid securities, including time deposits and repurchase agreements
which mature in more than seven days.
    
 
    The above percentage limits are based upon asset values at the time of the
applicable transaction; accordingly, a subsequent change in asset values will
not affect a transaction which was in compliance with the investment
restrictions at the time such transaction was effected. See the SAI for other
investment limitations.
 
YIELDS AND TOTAL RETURNS
 
   
    From time to time the Money Market Funds may advertise their "current yield"
and "effective yield." Both yield figures are based on historical earnings and
are not intended to indicate future performance. The current yield refers to the
investment income generated over a seven calendar-day period (which period will
be stated in the advertisement). This yield is then annualized by assuming the
amount of investment income generated during that week is earned each week over
a one-year period and is shown as a percentage of the investment. The effective
yield is calculated similarly but, when annualized, the investment income earned
is assumed to be reinvested. The effective yield will be slightly higher than
the current yield because of the compounding effect of this assumed
reinvestment. The Municipal Money Market Fund also may quote "tax equivalent
yields," which show the taxable yields a shareholder would have to earn before
federal income taxes to equal this Fund's tax-exempt yields. The tax equivalent
yield is calculated by dividing the Fund's tax-exempt yield by the result of one
minus a stated federal income tax rate. If only a portion of the Fund's income
was tax-exempt, only that portion is adjusted in the calculation. As stated
earlier, the Fund considers interest on private activity obligations to be
exempt from federal income tax. Each class of the Money Market Fund has
different expenses which will impact the performance of the class.
    
 
   
    Advertised yields for the Balanced Fund, the Growth and Income Fund, the
International Equity Fund, the S&P 500 Index Fund, the Intermediate Bond Fund
and the Short-Term Bond Fund (collectively, the "Variable NAV Funds") may be
computed by dividing the net investment income per share earned by a Fund during
the relevant time period by the maximum offering price per share for that Fund
on the last day of the period. Additionally, the Intermediate Bond Fund and the
Short-Term Bond Fund may advertise a "monthly distribution rate." This rate is
based on an annualized monthly dividend accrual rate per share compared with the
month-end share price of this Fund. Total return quotations advertised by the
Funds may reflect the average annual compounded (or aggregate compounded) rate
of return during the designated time period based on a hypothetical initial
investment and the redeemable value of that investment at the end of the period.
The Funds will at times compare their performance to applicable published
indices, and also may disclose their performance as ranked by certain ranking
entities. See the SAI for more information about the calculation of yields and
total returns.
    
 
   
MANAGEMENT AND ADMINISTRATION OF THE TRUSTS
    
 
   
    The Mileage Trust Board has general supervisory responsibility over the
Mileage Trust's affairs, while the business affairs of the AMR Trust and the
Equity 500 Index Portfolio are subject to the supervision of their respective
Board of Trustees. The Manager serves as investment manager and administrator to
the Portfolios pursuant to a Management Agreement dated October 1, 1995, as
amended on July 25, 1997, which obligates the Manager to provide or oversee all
administrative, investment advisory and portfolio management services for the
Portfolios. Similarly, the Manager entered into a Management Agreement dated
October 1, 1995, as amended on November 21, 1997, which obligates the Manager to
provide or oversee all administrative, investment advisory and portfolio
management services for the Funds. The Manager, located at 4333 Amon Carter
Boulevard,
    
 
                                                                      PROSPECTUS
 
                                       21
<PAGE>   29
 
   
MD5645, Fort Worth, Texas 76155, is a wholly owned subsidiary of AMR Corporation
("AMR"), the parent company of American Airlines, Inc., organized in 1986 to
provide investment management, advisory, administrative and asset management
consulting services. The assets of the Balanced Portfolio, the Growth and Income
Portfolio and the International Equity Portfolio are allocated by the Manager
among multiple investment advisers designated for that Portfolio. The assets of
the Intermediate Bond Portfolio are allocated by the Manager between the Manager
and another investment adviser. BT serves as investment adviser and
administrator of, and provides custody and transfer agency services to, the
Equity 500 Index Portfolio. See "Investment Advisers." The Manager serves as the
sole investment adviser to the Money Market Portfolios and the Short-Term Bond
Portfolio. In addition, with the exception of the International Equity Portfolio
and the Equity 500 Index Portfolio, if so requested by any investment adviser,
the Manager will make the investment decisions with respect to assets allocated
to that investment adviser which the investment adviser determines should be
invested in short-term obligations of the type permitted for investment by the
Money Market Portfolio. As of December 31, 1997, the Manager had assets under
management (including assets under fiduciary advisory control) totaling
approximately $        billion including approximately $        billion under
active management and $        billion as named fiduciary or fiduciary adviser.
Of the total, approximately $        billion of assets are related to AMR.
American Airlines, Inc. is not responsible for investments made in the Mileage
Trust.
    
 
   
    The Manager provides the Mileage Trust and the AMR Trust with office space,
office equipment and personnel necessary to manage and administer the Trusts'
operations. This includes complying with reporting requirements; corresponding
with shareholders; maintaining internal bookkeeping, accounting and auditing
services and records; and supervising the provision of services to the Trusts by
third parties. The Manager oversees each Portfolio's participation in securities
lending activities and any actions taken by securities lending agents in
connection with those activities to ensure compliance with all applicable
regulatory and investment guidelines. The Manager also develops the investment
programs for each Portfolio of the AMR Trust, selects and changes investment
advisers (subject to approval by the AMR Trust Board and appropriate interest
holders), allocates assets among investment advisers, monitors the investment
advisers' investment programs and results, and coordinates the investment
activities of the investment advisers to ensure compliance with regulatory
restrictions.
    
 
   
    The Manager bears the expense of providing the above services and pays the
fees of the investment advisers of the Funds and the Portfolios of the AMR
Trust. As compensation for paying the investment advisory fees and for providing
the Portfolios with advisory and asset allocation services, the Manager receives
from the AMR Trust an annualized fee which is calculated and accrued daily,
equal to the sum of (1) 0.15% of the net assets of the Money Market Portfolios,
(2) 0.25% of the net assets of the Intermediate Bond Portfolio and the
Short-Term Bond Portfolio, (3) 0.10% of the net assets of the other Portfolios
of the AMR Trust, plus (4) all fees payable by the Manager to the investment
advisers of the Balanced, the Growth and Income and the International Equity
Portfolios as described in "Investment Advisers." To the extent that a Fund
invests all of its investable assets in its corresponding Portfolio, the Manager
will need to provide only administrative services to the Funds. As compensation
for these services, the Manager receives from the Mileage Trust an annualized
fee equal to 0.25% of the net assets of each Variable NAV Fund and 0.05% of the
net assets of the Money Market Funds. The Manager receives compensation in
connection with securities lending activities. If a Portfolio lends its
portfolio securities and receives cash collateral from the borrower, the Manager
may receive up to 25% of the net annual interest income (the gross interest
earned by the investment less the amount paid to the borrower as well as related
expenses) received from the investment of such cash. If a borrower posts
collateral other than cash, the borrower will pay to the lender a loan fee. In
addition, the Manager may receive up to 25% of the loan fees posted by
borrowers. Currently, the Manager receives 10% of the net annual interest income
from the investment of cash collateral or 10% of the loan fees posted by
borrowers. The fees received by the Manager from the Mileage Trust and the AMR
Trust are payable quarterly in arrears.
    
 
    Each Management Agreement will continue in effect provided that annually
such continuance is specifically approved by a vote of the Mileage Trust Board
and the AMR Trust Board, including the affirmative votes of a majority of the
Trustees of each Board who are not parties to the Management Agreement or
"interested persons" as defined in the 1940 Act of any such party ("Independent
Trustees"), cast in person at a meeting called for the
 
PROSPECTUS
 
                                       22
<PAGE>   30
 
purpose of considering such approval, or by the vote of a Fund's shareholders or
a Portfolio's interest holders. A Management Agreement may be terminated with
respect to a Fund or a Portfolio at any time, without penalty, by a majority
vote of outstanding Fund shares or Portfolio interests on sixty (60) days'
written notice to the Manager, or by the Manager, on sixty (60) days' written
notice to the Mileage Trust or the AMR Trust. A Management Agreement will
automatically terminate in the event of its "assignment" as defined in the 1940
Act.
 
   
    The Mileage Trust is responsible for expenses not otherwise assumed by the
Manager, including the following: audits by independent auditors; transfer
agency, custodian, dividend disbursing agent and shareholder recordkeeping
services; taxes, if any, and the preparation of each Fund's tax returns;
interest; costs of Trustee and shareholder meetings; printing and mailing
prospectuses and reports to existing shareholders; fees for filing reports with
regulatory bodies and the maintenance of the Funds' existence; legal fees; fees
to federal and state authorities for the registration of shares; fees and
expenses of Independent Trustees; insurance and fidelity bond premiums; and any
extraordinary expenses of a nonrecurring nature.
    
 
    A majority of the Independent Trustees have adopted written procedures
reasonably appropriate to deal with potential conflicts of interest between the
Mileage Trust and the AMR Trust, including creating a separate Board of Trustees
of the AMR Trust.
 
   
FUND ADVISORY AGREEMENTS -- Each investment adviser, except BT, has entered into
a separate investment advisory agreement with the Manager to provide investment
advisory services to the Funds and the Portfolios of the AMR Trust, each dated
October 1, 1995. To the extent that a Fund invests all of its investable assets
in a corresponding Portfolio, however, an investment adviser will receive an
advisory fee only on behalf of the Portfolio and not on behalf of its
corresponding Fund. As described below, the assets of the Balanced, the Growth
and Income and the International Equity Portfolios are allocated among the
investment advisers designated for that Portfolio and the assets of the
Intermediate Bond Portfolio are allocated between the Manager and another
investment adviser. The Manager is permitted to enter into new or modified
advisory agreements with existing or new investment advisers without approval of
Fund shareholders or Portfolio interest holders, but subject to approval of the
Mileage Trust Board and the AMR Trust Board. The Securities and Exchange
Commission issued an exemptive order which eliminates the need for
shareholder/interest holder approval, subject to compliance with certain
conditions. These conditions include the requirement that within 90 days of
hiring a new adviser or implementing a material change with respect to an
advisory contract, the applicable Fund send a notice to shareholders containing
information about the change that would be included in a proxy statement. The
Manager recommends investment advisers to the AMR Trust Board based upon its
continuing quantitative and qualitative evaluation of the investment advisers'
skill in managing assets using specific investment styles and strategies. The
allocation of assets among investment advisers may be changed at any time by the
Manager. Allocations among investment advisers will vary based upon a variety of
factors, including the overall investment performance of each investment
adviser, the Portfolio's cash flow needs and market conditions. The Manager need
not allocate assets to each investment adviser designated for a Portfolio. The
investment advisers can be terminated without penalty to the AMR Trust by the
Manager, the AMR Trust Board or the interest holders of the applicable
Portfolio. Short-term investment performance, by itself, is not a significant
factor in selecting or terminating an investment adviser, and the Manager does
not expect to recommend frequent changes of investment advisers. The Prospectus
will be supplemented if additional investment advisers are retained or the
contract with any existing investment adviser is terminated.
    
 
   
    Each investment adviser has discretion to purchase and sell securities for
its segment of a Portfolio's assets in accordance with that Portfolio's
objectives, policies and restrictions and the more specific strategies provided
by the Manager. Although the investment advisers are subject to general
supervision by the AMR Trust Board, the Equity 500 Index Portfolio Board and the
Manager, as appropriate, these parties do not evaluate the investment merits of
specific securities transactions. As compensation for its services, each
investment adviser, except BT, is paid a fee by the Manager out of the proceeds
of the management fee received by the Manager from the AMR Trust.
    
 
                                                                      PROSPECTUS
 
                                       23
<PAGE>   31
 
   
ADMINISTRATION AND SERVICES AGREEMENT -- BT serves as the administrator to the
Equity 500 Index Portfolio. Under an Administration and Services Agreement with
the Portfolio, BT calculates the value of the assets of the Portfolio and
generally assists the Equity 500 Index Portfolio Board in all aspects of the
administration and operation of the Portfolio. The Administration and Services
Agreement provides for the Portfolio to pay BT a fee, computed daily and paid
monthly, at the rate of 0.05% of the average daily net assets of the Portfolio.
Under the Administration and Services Agreement, BT may delegate one or more of
its responsibilities to others, including Federated Services Company, at BT's
expense.
    
 
DISTRIBUTION PLAN -- The distribution plan for the Funds (the "Plan") was
adopted pursuant to Rule 12b-1 under the 1940 Act and provides that it will
continue in effect so long as its continuance is approved at least annually by a
majority of the Trustees, including the affirmative votes of a majority of the
Independent Trustees of the Mileage Trust Board, cast in person at a meeting
called for the purpose of considering such approval, or by the vote of
shareholders. The Plan may be terminated with respect to a particular Fund at
any time, without the payment of any penalty, by a vote of a majority of the
Independent Trustees of the Mileage Trust Board or by a vote of a majority of
the outstanding voting securities of the applicable Fund. Shares are distributed
through the Funds' principal underwriter, Brokers Transaction Services ("BTS").
BTS is compensated by the Manager, and not the Trust.
 
    The Plan provides that each Fund will pay 0.25% per annum of its average
daily net assets to the Manager (or another entity approved by the Mileage Trust
Board) for distribution-related services. The fee will be payable monthly in
arrears without regard to whether the amount of the fee is more or less than the
actual expenses incurred in a particular month by the entity for the services
provided pursuant to the Plan. The primary expenses expected to be incurred
under the Plan are advertising and participation in the AAdvantage program.
 
ALLOCATION OF FUND EXPENSES -- Expenses of the Money Market Fund's Platinum and
Mileage Classes generally are allocated equally among the shares of the Fund,
regardless of class. However, certain expenses approved by the Mileage Trust
Board will be allocated solely to the class to which they relate.
 
PRINCIPAL UNDERWRITER -- BROKERS TRANSACTION SERVICES, INC., 7001 Preston Road,
Dallas, Texas 75205, serves as the principal underwriter of the Funds.
 
   
CUSTODIAN -- STATE STREET BANK & TRUST COMPANY ("State Street"), Boston,
Massachusetts, serves as custodian for the Portfolios of the AMR Trust and the
Funds. BANKERS TRUST COMPANY, New York, New York, serves as custodian and
transfer agent for the assets of the Equity 500 Index Portfolio.
    
 
   
TRANSFER AGENT -- State Street serves as transfer agent and provides transfer
agency services for Fund shareholders through its affiliate NATIONAL FINANCIAL
DATA SERVICES, ("NFDS"), Kansas City, Missouri.
    
 
   
INDEPENDENT AUDITOR -- The independent auditor for the Funds, except the S&P 500
Index Fund and the AMR Trust is ERNST & YOUNG LLP, Dallas, Texas. The
independent auditor for the S&P 500 Index Fund and the Equity 500 Index
Portfolio is COOPERS & LYBRAND L.L.P., Kansas City, Missouri.
    
 
INVESTMENT ADVISERS
 
   
    Set forth below is a brief description of the investment advisers for each
Fund and its corresponding Portfolio, except for the Money Market Funds and
their corresponding Portfolios, whose sole investment adviser is the Manager.
References to the investment advisers retained by a Portfolio also apply to the
corresponding Fund. Except for the Manager and BT, none of the investment
advisers provides any services to the Funds or the Portfolios except for
portfolio investment management and related recordkeeping services, or has any
affiliation with the Mileage Trust, the AMR Trust, the Equity 500 Index
Portfolio or the Manager. BT provides investment
    
 
PROSPECTUS
 
                                       24
<PAGE>   32
 
   
advisory, administrative and other services to the Equity 500 Index Portfolio.
See "Bankers Trust Company" below for a discussion of those services.
    
 
   
    William F. Quinn has served as President of the Manager since it was founded
in 1986, and Nancy A. Eckl serves as Vice President - Trust Investments of the
Manager. Ms. Eckl previously served as Vice President - Finance and Compliance
of the Manager from December 1990 to May 1995. In these capacities, Mr. Quinn
and Ms. Eckl have primary responsibility for the day-to-day operations of the
Balanced Fund, the Growth and Income Fund, the International Equity Fund, the
Intermediate Bond Fund and their corresponding Portfolios. These
responsibilities include oversight of the investment advisers, regular review of
their performance and asset allocations among them.
    
 
   
    Michael W. Fields is responsible for the portfolio management oversight of
the Short-Term Bond Fund and its corresponding Portfolio. Mr. Fields has been
with the Manager since it was founded in 1986 and serves as Vice President-Fixed
Income Investments. Benjamin L. Mayer is responsible for the day-to-day
portfolio management of the Short-Term Bond Portfolio. Mr. Mayer has served as
Senior Portfolio Manager of the Manager since May 1995. Prior to that time, he
was a Vice President of Institutional Fixed Income Sales at Merrill Lynch,
Pierce, Fenner & Smith from January 1994 to April 1995 and Vice President,
Regional Senior Strategist from April 1989 to January 1994.
    
 
   
    Mr. Fields also is responsible for the portfolio management oversight of the
portion of the Intermediate Bond Fund and its corresponding Portfolio, allocated
to the Manager. Mr. Mayer is responsible for its day-to-day portfolio
management.
    
 
   
    Frank Salerno, Managing Director of BT, is responsible for the day-to-day
management of the Equity 500 Index Portfolio. Mr. Salerno has been employed by
BT since prior to 1989 and has managed the Equity 500 Index Portfolio's assets
since the Portfolio commenced operations December 31, 1992.
    
 
   
    BANKERS TRUST COMPANY, 280 Park Avenue, New York, New York, 10017, is a New
York banking corporation and is a wholly owned subsidiary of Bankers Trust New
York Corporation. BT conducts a variety of general banking and trust activities
and is a major wholesale supplier of financial services to the international and
domestic institutional market, with a global network of over 120 offices in more
than 40 countries. As of September 30, 1997, Bankers Trust New York Corporation
was the seventh largest bank holding company in the United States with total
assets of approximately $     billion and approximately $    billion in assets
under management globally. Of that total, approximately $     billion are in
U.S. equity index assets alone. BT serves as investment adviser and
administrator to the Equity 500 Index Portfolio. For its services, BT receives a
fee from the Equity 500 Index Portfolio, computed daily and paid monthly, at the
annual rate of 0.08% of the average daily net assets of the Portfolio.
    
 
   
    BARROW, HANLEY, MEWHINNEY & STRAUSS, INC. ("Barrow"), 3232 McKinney Avenue,
15th Floor, Dallas, Texas 75204, is a professional investment counseling firm
which has been providing investment services since 1979. The firm is wholly
owned by United Asset Management Corporation, a Delaware corporation. As of
December 31, 1997, Barrow had discretionary investment management authority with
respect to approximately $     billion of assets, including approximately $
billion of assets of AMR and its subsidiaries and affiliated entities. Barrow
serves as an investment adviser to the Balanced Portfolio, the Growth and Income
Portfolio, the Intermediate Bond Portfolio and the Short-Term Bond Portfolio,
although the Manager does not presently intend to allocate any of the assets in
the Short-Term Bond Portfolio to Barrow. The Manager pays Barrow an annualized
fee equal to .30% on the first $200 million in AMR Trust assets under its
discretionary management, .20% on the next $300 million, .15% on the next $500
million, and .125% on assets over $1 billion.
    
 
   
    BRANDYWINE ASSET MANAGEMENT, INC. ("Brandywine"), 201 North Walnut Street,
Wilmington, Delaware 19801, is a professional investment counseling firm founded
in 1986. Brandywine is a wholly owned subsidiary of Legg Mason, Inc. As of
December 31, 1997, Brandywine had assets under management totaling approximately
    
 
                                                                      PROSPECTUS
 
                                       25
<PAGE>   33
 
   
$ billion, including approximately $  million of assets of AMR and its
subsidiaries and affiliated entities. Brandywine serves as an investment adviser
to the Balanced Portfolio and the Growth and Income Portfolio. The Manager pays
Brandywine, an annualized fee equal to .25% of assets in the Growth and Income
Portfolio and .225% of assets in the Balanced Portfolio of the first $500
million of AMR Trust assets under its discretionary management, .225% of the
next $100 million on all assets, and .20% on all excess assets.
    
 
   
    GSB INVESTMENT MANAGEMENT, INC. ("GSB"), 301 Commerce Street, Fort Worth,
Texas 76102, is a professional investment management firm which was founded in
1987 by Frank P. Ganucheau, Mark J. Stupfel, and Lyle E. Brumley. GSB is wholly
owned by United Asset Management Corporation, a Delaware corporation. As of
December 31, 1997, GSB managed approximately $  billion of assets, including
approximately $  million of assets of AMR and its subsidiaries and affiliated
entities. GSB serves as an investment adviser to the Balanced Portfolio and the
Growth and Income Portfolio. The Manager pays GSB an annualized fee equal to
 .30% of the first $100 million in AMR Trust assets under its discretionary
management, .25% of the next $100 million, .20% of the next $100 million, and
 .15% on all excess assets.
    
 
   
    HOTCHKIS AND WILEY, 800 West Sixth Street, 5th Floor, Los Angeles,
California 90017, is a professional investment counseling firm which was founded
in 1980 by John F. Hotchkis and George Wiley. Hotchkis and Wiley is a division
of Merrill Lynch Capital Management Group, a wholly owned subsidiary of Merrill
Lynch & Co., Inc. Assets under management as of December 31, 1997 were
approximately $  billion, which included approximately $  billion of assets of
AMR and its subsidiaries and affiliated entities. Hotchkis and Wiley serves as
an investment adviser to the Balanced Portfolio, the Growth and Income Portfolio
and the International Equity Portfolio. The Manager pays Hotchkis and Wiley an
annualized fee equal to .60% of the first $10 million of AMR Trust assets under
its discretionary management, .50% of the next $140 million of assets, .30% on
the next $50 million of assets, .20% of the next $800 million of assets and .15%
of all excess assets.
    
 
   
    INDEPENDENCE INVESTMENT ASSOCIATES, INC. ("IIA"), 53 State Street, Boston,
Massachusetts 02109, is a professional investment counseling firm which was
founded in 1982. The firm is a wholly owned subsidiary of John Hancock Mutual
Life Insurance Company. Assets under management as of December 31, 1997,
including funds managed for its parent company, were approximately $  billion,
which included approximately $    million of assets of AMR and its subsidiaries
and affiliated entities. IIA serves as an investment adviser to the Balanced
Portfolio and the Growth and Income Portfolio. The Manager pays IIA an
annualized fee equal to .50% of the first $30 million of AMR Trust assets under
its discretionary management, .25% of the next $70 million of assets, and .20%
of all excess assets.
    
 
   
    MORGAN STANLEY ASSET MANAGEMENT INC. ("MSAM"), 25 Cabot Square, London,
United Kingdom, E14 4QA, is a wholly owned subsidiary of Morgan Stanley, Dean
Witter, Discover & Co. MSAM provides portfolio management and named fiduciary
services to taxable and nontaxable institutions, international organizations and
individuals investing in United States and international equity and debt
securities. At September 30, 1997, MSAM, together with its other asset
management affiliates, had assets under management (including assets under
fiduciary advisory control) totaling approximately $  billion, including
approximately $  billion under active management and $  billion as named
fiduciary or fiduciary adviser. As of September 30, 1997, MSAM had investment
authority over approximately $  million of assets of AMR and its subsidiaries
and affiliated entities. MSAM serves as an investment adviser to the
International Equity Portfolio. The Manager pays MSAM an annual fee equal to
 .80% of the first $25 million of AMR Trust assets under its discretionary
management, .60% of the next $25 million in assets, .50% of the next $25 million
in assets and .40% on all excess assets.
    
 
   
    TEMPLETON INVESTMENT COUNSEL, INC. ("Templeton"), 500 East Broward Blvd.,
Suite 2100, Fort Lauderdale, Florida 33394-3091, is a professional investment
counseling firm which has been providing investment services since 1979.
Templeton is indirectly owned by Franklin Resources, Inc. As of December 31,
1997, Templeton had discretionary investment management authority with respect
to approximately $  billion of assets, including approximately $  million of
assets of AMR and its subsidiaries and affiliated entities. Templeton serves as
an
    
 
PROSPECTUS
 
                                       26
<PAGE>   34
 
investment adviser to the International Equity Portfolio. The Manager pays
Templeton an annualized fee equal to .50% of the first $100 million in AMR Trust
assets under its discretionary management, .35% of the next $50 million in
assets, .30% of the next $250 million in assets and .25% on assets over $400
million.
 
   
    Solely for the purpose of determining the applicable percentage rates when
calculating the fees for each investment adviser other than MSAM and BT, there
shall be included all other assets or trust assets of American Airlines, Inc.
also under management by each respective investment adviser (except assets
managed by Barrow under the HALO Bond Program). For the purpose of determining
the applicable percentage rates when calculating MSAM's fees, all equity account
assets managed by MSAM on behalf of American Airlines, Inc. shall be included.
The inclusion of any such assets will result in lower overall fee rates being
applied to the applicable Portfolio.
    
 
AADVANTAGE MILES
 
    The AAdvantage program offers the opportunity to obtain free upgrades and
travel awards on American Airlines and AAdvantage airline participants, as well
as upgrades and discounts on car rentals and hotel accommodations. For more
information about the AAdvantage program, call American Airlines at (800)
433-7300.
 
    AAdvantage miles will be posted monthly in arrears to each shareholder's
AAdvantage account based on the shareholder's average daily account balance
during the previous month. Miles are posted at an annual rate of one mile per
$10 maintained in a Fund. Mileage is calculated on the average daily balance and
posted monthly. The average daily balance is calculated by adding each day's
balance and dividing by the number of days in the month. For example, the
average daily balance on a $50,000 account funded on the 16th day of a month
having 30 days (and maintained at that balance through the end of the month)
would be $25,000. Mileage received for that month would be 208 miles. If the
same balance were maintained through the next month, the average daily balance
would be $50,000, and the mileage would be 417 miles that month and every month
the $50,000 investment was maintained in the Funds. These miles appear on the
monthly account statement as well as on subsequent AAdvantage program
statements.
 
    In the case of Trust Accounts, AAdvantage miles will be posted only in a
trustee's individual name, and not in the name of the Trust Account. Before
investing in a Fund, trustees of Trust Accounts should consult their own legal
and tax advisers as to the tax effect of this arrangement and whether this
arrangement is consistent with their legal duties as trustees. American Airlines
has informed the Funds that in administering an AAdvantage member's AAdvantage
account, it shall not be required to distinguish between AAdvantage miles
accumulated by the individual in his/her capacity as trustee to a Trust Account
from AAdvantage miles accumulated in an individual capacity or from other
sources.
 
    The Manager reserves the right to discontinue the posting of AAdvantage
miles or to change the mileage calculation at any time upon notice to
shareholders. See also "Dividends, Other Distributions and Tax Matters."
 
    American Airlines may find it necessary to change AAdvantage program rules,
regulations, travel awards and special offers at any time. This means that
American Airlines may initiate changes impacting, for example, participant
affiliations, rules for earning mileage credit, mileage levels and rules for the
use of travel awards, continued availability of travel awards, blackout dates
and limited seating for travel awards, and the features of special offers.
American Airlines reserves the right to end the AAdvantage program with six
months' notice. AAdvantage travel awards, mileage accrual and special offers are
subject to government regulations.
 
HOW TO PURCHASE SHARES
 
   
    Shares are sold on a continuous basis. Purchase orders should be directed to
NFDS either by mail, by pre-authorized investment or by wire as described below.
The minimum initial purchase for each Fund is $2,500. The
    
 
                                                                      PROSPECTUS
 
                                       27
<PAGE>   35
 
   
Funds have no obligation to accept purchase requests or maintain accounts which
do not meet minimum purchase requirements. Accounts opened through financial
intermediaries may be subject to lower or higher minimums. The minimum for
subsequent purchases is $50, except for wire purchases for which a $500 minimum
applies. The Manager reserves the right to waive or change the minimum
investment requirements. The Manager also reserves the right to charge an annual
account fee of $12 (to offset the costs of servicing accounts with low balances)
if an account balance falls below certain asset levels.
    
 
   
    An order to purchase shares of a Variable NAV Fund will be executed at the
next share price calculated Monday through Friday on each day on which the
Exchange is open for trading, which excludes the following business holidays:
New Year's Day, Martin Luther King's Birthday, President's Day, Good Friday,
Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day
("Business Day"). Shares of the Variable NAV Funds are offered and purchase
orders are accepted until the close of the Exchange, generally 4:00 p.m. Eastern
time, on each Business Day. An order to purchase shares of the Money Market
Funds will be executed at the Fund's next determined net asset value per share
on any day on which the Exchange is open for business except for Columbus Day
and Veteran's Day ("Money Market Business Day") and during which federal funds
become available to the Fund. Shares are offered and orders are accepted for the
Municipal Money Market Fund until 12:00 p.m. Eastern time, or the close of the
Exchange (whichever comes first), for the U.S. Government Money Market Fund
until 2:00 p.m. Eastern time, or the close of the Exchange (whichever comes
first), and for the Money Market Fund until 3:00 p.m. Eastern time, or the close
of the Exchange (whichever comes first), on each Money Market Business Day. The
Mileage Trust reserves the right to reject any order for the purchase of shares
and to limit or suspend, without prior notice, the offering of shares. "Federal
funds" are funds deposited by a commercial bank in an account at a federal
reserve bank that can be transferred to a similar account of another bank in one
day and thus may be made immediately available to a Money Market Fund through
its custodian.
    
 
OPENING AN ACCOUNT -- A completed and signed application is required for each
new account opened, regardless of the method chosen for making an initial
investment. If an individual opening an account is not yet a member of the
AAdvantage program, he or she automatically will be enrolled and assigned an
AAdvantage account number. If assistance is required in filling out the
application, or if extra applications are required, call (800) 388-3344.
 
   
PURCHASING BY MAIL -- To open an account by mail, complete the application form,
include a check payable to the American AAdvantage Funds ($2,500 minimum) and
mail both to:
    
 
   
       American AAdvantage Funds
    
   
        c/o NFDS
    
   
        P.O. Box 419643
    
   
        Kansas City, MO 64141-6643
    
 
   
    Purchase checks are accepted subject to collection at full face value in
U.S. funds and must be drawn in U.S. dollars on a U.S. bank. For subsequent
purchases by mail make your check payable to the American AAdvantage Funds ($50
minimum) and include your account number on your check. Mail to the address
printed above. Include either the detachable form from your account statement,
the deposit slips from your checkbook (if you have a Money Market account and
opted for checking) or a letter with the account name and number.
    
 
   
SUBSEQUENT PURCHASES BY PRE-AUTHORIZED AUTOMATIC INVESTMENT -- Pre-Authorized
Automatic Investment allows you to make regular, automatic transfers ($50
minimum) from your bank account to purchase shares in the Fund of your choice
after an account has been open. To establish this option, provide the
appropriate information on the application form and attach a voided check or a
deposit slip from your bank account. Funds will be transferred automatically
from your bank account via Automated Clearing House ("ACH") on the 5th day of
each month.
    
 
PROSPECTUS
 
                                       28
<PAGE>   36
 
   
PURCHASES BY WIRE -- A completed application form must precede an initial
purchase by wire. Call (800) 388-3344 to wire funds. Federal funds ($2,500 for
initial purchases and $500 for subsequent purchases) should be wired to:
    
 
   
       State Street Bank & Trust Co.
    
   
        ABA Routing #0110-0002-8, Account #9905-342-3
    
   
        Attention: American AAdvantage Mileage Funds, and specify the Fund to be
       purchased.
    
 
   
    You will be responsible for any charges assessed by your bank to handle wire
transfers.
    
 
HOW TO REDEEM SHARES
 
   
    Shares of the Variable NAV Funds may be redeemed by telephone, by
pre-authorized automatic redemption or by mail on any Business Day. Shares of
the Money Market Funds may be redeemed by telephone, by writing a check, by
pre-authorized automatic redemption or by mail on any Money Market Business Day.
Shares will be redeemed at the net asset value next calculated after the
applicable Fund has received and accepted the redemption request. Proceeds from
a redemption of shares purchased by check or pre-authorized automatic purchase
may be withheld until the funds have cleared, which may take up to 15 days.
Although the Funds intend to redeem shares in cash, each Fund reserves the right
to pay the redemption price in whole or in part by a distribution of readily
marketable securities held by the Fund's corresponding Portfolio. See the SAI
for further information concerning redemptions in kind.
    
 
   
     Redemption proceeds generally will be sent within one Business Day or Money
Market Business Day, as applicable. However, if making immediate payment could
affect a Fund adversely, it may take up to seven days to send payment.
    
 
    A minimum of $2,500 is required in order to maintain an account in a Fund.
Otherwise, a Fund may give a shareholder 60 days' notice to increase the account
balance to this level in order to avoid the imposition of an account fee or
account closure. If a shareholder does not increase the account balance to
$2,500 within the 60 day period, the Fund is entitled to close the account and
mail the proceeds to the address of record.
 
    To ensure acceptance of a redemption request, please adhere to the following
procedures.
 
   
REDEEMING BY TELEPHONE -- Shares may be redeemed by telephone if your account
application reflects that option. Telephone redemptions in any 30 day period
shall not exceed $25,000 without the express written consent of the Mileage
Trust. In order to redeem by telephone, you should call NFDS at (800) 388-3344.
Redemption proceeds will be mailed only to the address of record or mailed or
wired to a commercial bank account designated on the account application.
    
 
   
    By establishing the telephone redemption service, you authorize the Funds or
their agent to act upon verbal instructions to redeem shares for any account for
which such service has been authorized. In an effort to prevent unauthorized or
fraudulent redemption requests by telephone, the transfer agent will employ
reasonable procedures specified by the Funds to confirm that such instructions
are genuine. For instance, all telephone redemption requests will be recorded
and proceeds of telephone redemption requests will be sent only to the address
or account designated in the application. Neither the Funds, the Trusts, the
Equity 500 Index Portfolio, the Manager, NFDS or their trustees, directors or
officers will be liable for any unauthorized or fraudulent redemption
instructions received by telephone. If reasonable procedures as described above
are not implemented, these parties may be liable for any loss due to
unauthorized or fraudulent transactions. Due to the volume of calls or other
unusual circumstances, telephone redemptions may be difficult to implement
during certain time periods. This service may be amended or terminated at any
time by the transfer agent or the Mileage Trust without prior notice.
    
 
   
REDEEMING BY CHECK -- If you elect so on the application, shares of the Money
Market Funds may be redeemed through the check writing feature. There is no
limit on the number of checks written per month and no check
    
 
                                                                      PROSPECTUS
 
                                       29
<PAGE>   37
 
   
redemption fees. Checks must be written in amounts of $100 or more. Check drafts
however, are not returned to you. If copies of drafts are required, a service
charge of $2 per check will be assessed to you.
    
 
   
PRE-AUTHORIZED AUTOMATIC REDEMPTIONS -- You can arrange to have a preauthorized
amount ($100 or more) redeemed from your account and automatically deposited
into a bank account, via ACH, on the 15th day of each month. For more
information regarding preauthorized automatic redemptions, contact NFDS at (800)
388-3344.
    
 
   
REDEEMING BY MAIL -- A letter of instruction may be mailed to the American
AAdvantage Funds, c/o NFDS, P.O. Box 419643, Kansas City, MO 64141-6643. It
should specify the Fund (Balanced, Growth and Income, International Equity, S&P
500 Index, Intermediate Bond, Short-Term Bond, Money Market, Municipal Money
Market or U.S. Government Money Market Fund), the number of shares or dollar
amount to be redeemed, your name and account number. The letter of instruction
must be signed by all persons required to sign for the account, exactly as it is
registered. Redemptions over $25,000, redemption proceeds in any amount sent to
an address other than the address of record or to a commercial bank account
other than the account designated on the application, or redemptions on an
account whose address of record has been changed within thirty days, must be
accompanied by a signature guarantee by a financial institution satisfying the
standards established by NFDS.
    
 
   
REDEEMING BY WIRE -- In order to redeem shares by wire you must sign up for this
option before using it. Redemption proceeds will be transmitted directly to your
predesignated account at a domestic bank upon request, for amounts of at least
$500. To verify that this option is in place, call (800) 388-3344. Your account
will be charged $12 for wire redemptions to cover transaction costs.
    
 
FULL REDEMPTIONS -- Unpaid dividends credited to an account up to the date of
redemption of all shares of a Money Market Fund generally will be paid at the
time of redemption.
 
EXCHANGE PRIVILEGE
 
    Shares of a Fund which have been registered in a shareholder's name for at
least 15 days may be exchanged into shares of another Fund. A minimum exchange
of $50 is required into existing accounts. If a shareholder wishes to establish
a new account by making an exchange, a $2,500 minimum is required.
 
   
    Shareholders may exchange shares by sending the Funds a written request or
by calling NFDS at (800) 388-3344. The exchange will be processed at the next
share price calculated after the request is received in good order by the Funds.
In establishing a telephone exchange service, shareholders authorize the Funds
or their agent to act upon verbal instructions to exchange shares from any
account for which such service is authorized to any identically registered
account(s). NFDS will use reasonable procedures specified by the Funds to
confirm that such instructions are genuine such as the recording of all
telephone exchange requests. If reasonable procedures as described above are
implemented, neither the Funds, the Trusts, the Equity 500 Index Portfolio, the
Manager, NFDS or their trustees, directors or officers will be liable for any
unauthorized or fraudulent instructions.
    
 
    The general redemption policies apply to redemptions by telephone exchange.
The exchange privilege may be modified or terminated at any time by the Funds.
The Funds reserve the right to limit the number of exchanges an investor may
exercise.
 
VALUATION OF SHARES
 
   
    The net asset value of each share (share price) of the Variable NAV Funds is
determined as of the close of the Exchange, generally 4:00 p.m. Eastern time, on
each Business Day and the net asset value of each share of the Money Market
Funds is determined as of the close of the Exchange, generally 4:00 p.m. Eastern
time, on each Money Market Business Day. Except for the Mileage Class of the
Money Market Fund, the net asset value of all outstanding shares of a Fund will
be determined by computing that Fund's total assets (which is the value of the
Fund's investment in its corresponding Portfolio), subtracting all of the Fund's
liabilities, and dividing the result
    
 
PROSPECTUS
 
                                       30
<PAGE>   38
 
   
by the total number of Fund shares outstanding at such time. The net asset value
of Mileage Class shares of the Money Market Fund will be based on a pro rata
allocation of the value of the Fund's corresponding Portfolio's investment
income, expenses and total capital gains and losses. The allocation will be
based on the comparative net asset value at the beginning of the day, except for
expenses related solely to one class of shares ("Class Expenses"), which will be
borne only by the appropriate class of shares. Because of Class Expenses, the
net income attributable to and the dividends payable may be different for each
class of shares.
    
 
   
    Equity securities listed on securities exchanges, including all but United
Kingdom securities of the International Equity Portfolio, are valued at the last
quoted sales price on a designated exchange prior to the close of trading on the
Exchange or, lacking any sales, on the basis of the last current bid price prior
to the close of trading on the Exchange. Securities of the United Kingdom held
in the International Equity Portfolio are priced at the last jobber price (mid
of the bid and offer prices quoted by the leading stock jobber in the security)
prior to close of trading on the Exchange. Trading in foreign markets is usually
completed each day prior to the close of the Exchange. However, events may occur
which affect the values of such securities and the exchange rates between the
time of valuation and the close of the Exchange. Should events affect the value
of such securities materially during this period, the securities are priced at
fair value, as determined in good faith and pursuant to procedures approved by
the AMR Trust Board. Over-the-counter equity securities are valued on the basis
of the last bid price on that date prior to the close of trading. Debt
securities (other than short-term securities) will normally be valued on the
basis of prices provided by a pricing service and may take into account
appropriate factors such as institution-size trading in similar groups of
securities, yield, quality, coupon rate, maturity, type of issue, trading
characteristics and other market data. In some cases, the prices of debt
securities may be determined using quotes obtained from brokers. Securities for
which market quotations are not readily available are valued at fair value, as
determined in good faith and pursuant to procedures approved by the AMR Trust
Board for the AMR Trust Portfolios. Assets and liabilities denominated in
foreign currencies and forward currency contracts are translated into U.S.
dollar equivalents based on prevailing market rates. Portfolio obligations held
by the Money Market Portfolios are valued in accordance with the amortized cost
method, which is designed to enable those Portfolios and their corresponding
Funds to maintain a consistent $1.00 per share net asset value. Investment grade
short-term obligations with 60 days or less to maturity held by all other
Portfolios also are valued using the amortized cost method as described in the
SAI.
    
 
DIVIDENDS, OTHER DISTRIBUTIONS AND TAX MATTERS
 
   
DIVIDEND AND OTHER DISTRIBUTIONS -- Dividends from the net investment income of
the Balanced Fund, the Growth and Income Fund and the International Equity Fund
will be declared annually. Dividends consisting of substantially all of the net
investment income of the Intermediate Bond Fund and the Short-Term Bond Fund,
which are paid monthly, normally are declared on each Business Day immediately
prior to the determination of the net asset value and are payable to
shareholders of record as of the close of business on the day on which declared.
The S&P 500 Index Fund distributes income dividends on the first Business Day in
April, July and October. In December, the S&P 500 Index Fund will distribute
another income dividend, plus any capital gains. Each Fund may make an
additional dividend or other distribution, if necessary, to avoid a 4% excise
tax on certain undistributed income and gain. A Fund's net investment income
consists of its share of its corresponding Portfolio's dividends and interest
(including discount) accrued on its securities, less applicable expenses.
Distributions of a Fund's share of its corresponding Portfolio's realized net
short-term capital gain, net capital gain (the excess of net long-term capital
gain over net short-term capital loss), and net gains from foreign currency
transactions, if any, normally will be made annually.
    
 
   
    All of each Money Market Fund's net investment income and net short-term
capital gain, if any, generally will be declared as dividends on each Money
Market Business Day immediately prior to the determination of the net asset
value. Dividends generally will be paid monthly, in cash or in Fund shares, on
the first day of the following month. The Money Market Fund's net investment
income attributable to the Mileage Class consists of (1) that class' pro rata
share of the Fund's share of interest accrued and discount earned on the Money
Market Portfolio's securities less amortization of premium and expenses of both
the Portfolio and (2) the Fund's
    
 
                                                                      PROSPECTUS
 
                                       31
<PAGE>   39
 
   
expenses attributable to the Mileage Class. The Money Market Portfolios do not
expect to realize net capital gain, and, therefore, the Money Market Funds do
not foresee paying any capital gain distributions. If any Money Market Fund
(either directly or indirectly through its corresponding Portfolio) incurs or
anticipates any unusual expenses, loss or depreciation that would adversely
affect its net asset value or income for a particular period, the Board would at
that time consider whether to adhere to the dividend policy described above or
to revise it in the light of the then prevailing circumstances.
    
 
   
    Unless a shareholder elects otherwise on the account application, all
dividends and other distributions on a Fund's shares will be automatically paid
in additional shares of that Fund. However, a shareholder may choose to have
distributions of net capital gain (and, if applicable, net foreign currency
gains) paid in shares and dividends paid in cash, or have all such distributions
and dividends paid in cash. An election may be changed at any time by delivering
written notice that is received by the transfer agent at least ten days prior to
the payment date for a dividend or other distribution.
    
 
   
TAX INFORMATION -- Each Fund is treated as a separate corporation for federal
income tax purposes and intends to qualify or to continue to qualify for
treatment as a regulated investment company under the Internal Revenue Code of
1986, as amended. In each taxable year that a Fund so qualifies, the Fund (but
not its shareholders) will be relieved of federal income tax on that part of its
investment company taxable income (generally, net investment income plus any net
short-term capital gain and gains from certain foreign currency transactions)
and net capital gain that it distributes to its shareholders. However, a Fund
will be subject to a nondeductible 4% excise tax to the extent that it fails to
distribute by the end of any calendar year substantially all of its ordinary
income for that calendar year and its net capital gain for the one-year period
ending on October 31 of that year, plus certain other amounts. For these and
other purposes, dividends and other distributions declared by a Fund in October,
November or December of any year and payable to shareholders of record on a date
in one of those months will be deemed to have been paid by the Fund and received
by the shareholders on December 31 of that year if they are paid by the Fund
during the following January. Each Portfolio has received a ruling from the
Internal Revenue Service or an opinion of counsel that it is or should be
classified for federal income tax purposes as a partnership; accordingly, no
Portfolio is subject to federal income tax.
    
 
   
    Dividends from a Fund's investment company taxable income are taxable to its
shareholders as ordinary income to the extent of the Fund's earnings and
profits, whether received in cash or paid in additional Fund shares.
Distributions of a Fund's net capital gain (whether received in cash or paid in
additional Fund shares), when designated as such, generally are taxable to those
shareholders as long-term capital gain, regardless of how long they have held
their Fund shares. A capital gain distribution from a Fund also may be offset by
capital losses from other sources. Under the Taxpayer Relief Act of 1997,
different maximum tax rates apply to a noncorporate taxpayer's net capital gain
depending on the taxpayer's holding period and marginal rate of federal income
tax -- generally, 28% for gain recognized on securities held for more than one
year but not more than 18 months and 20% (10% for taxpayers in the 15% marginal
tax bracket) for gain recognized on securities held for more than 18 months.
Pursuant to an Internal Revenue Service notice, the Fund may divide each net
capital gain distribution into a 28% rate gain distribution and a 20% rate gain
distribution (in accordance with the Fund's holding periods for the securities
it sold that generated the distributed gain) and its shareholders must treat
those portions accordingly.
    
 
   
    Some foreign countries may impose income or withholding taxes on certain
dividends payable to the International Equity Portfolio. The International
Equity Fund's share of any such withheld taxes may be treated by that Fund as a
deduction or, if it satisfies certain requirements, it may elect to flow the tax
through to its shareholders, who in turn may either deduct the taxes or use them
in calculating credits against their federal income tax.
    
 
    Distributions by the Municipal Money Market Fund that it designates as
"exempt-interest dividends" generally may be excluded from gross income by its
shareholders. If the Municipal Money Market Portfolio earns taxable income from
any of its investments, the Municipal Money Market Fund's share of that income
will be
 
PROSPECTUS
 
                                       32
<PAGE>   40
 
   
distributed as a taxable dividend. To the extent that Portfolio invests in
certain private activity obligations, that Fund's shareholders will be required
to treat a portion of its dividends as a "tax preference item" in determining
their liability for the AMT. Exempt-interest dividends also may be subject to
state or local income tax laws. Because some states exempt from income tax the
interest on their own obligations and obligations of governmental agencies of
and municipalities in the state, shareholders will receive tax information each
year regarding the Municipal Money Market Fund's exempt-interest income by
state. Interest on indebtedness incurred or continued by a shareholder to
purchase or carry shares of that Fund is not deductible.
    
 
   
    Redemption of Fund shares (other than shares of the Money Market Funds) may
result in taxable gain or loss to the redeeming shareholder, depending upon
whether the redemption proceeds exceed or are less than the shareholder's
adjusted basis for the redeemed shares. An exchange of shares of a Fund for
shares of any other Fund (see "Exchange Privileges") generally will have similar
tax consequences. If shares of a Fund are sold at a loss after being held for
six months or less, the loss will be treated as long-term, instead of
short-term, capital loss to the extent of any capital gain distributions
received on those shares.
    
 
    If shares are purchased shortly before the record date for a dividend (other
than an exempt-interest dividend) or other distribution, the investor will pay
full price for the shares and receive some portion of the price back as a
taxable distribution.
 
   
     Each Fund notifies its shareholders following the end of each calendar year
of the amounts of dividends and capital gain distributions paid (or deemed paid)
(and for the International Equity Fund, if it satisfies the requirements and
makes the election referred to above, their share of the Fund's share of any
foreign taxes paid by the International Equity Portfolio) that year and of any
portion of those dividends that qualifies for the corporate dividends-received
deduction. The information regarding capital gain distributions designates the
portions thereof subject to the different maximum rates of tax applicable to
noncorporate taxpayers' net capital gain indicated above. The notice sent by the
Municipal Money Market Fund specifies the amounts of exempt-interest dividends
(and the portion thereof, if any, that is a tax preference item for purposes of
the AMT) and any taxable dividends.
    
 
    Each Fund is required to withhold 31% of all taxable dividends, capital gain
distributions and, for all Funds other than the Money Market Funds, redemption
proceeds payable to any individuals and certain other non-corporate shareholders
who do not provide the Fund with a correct taxpayer identification number or
(except with respect to redemption proceeds) who otherwise are subject to
back-up withholding.
 
    The foregoing is only a summary of some of the important tax considerations
generally affecting the Funds and their shareholders. Prospective investors are
urged to consult their own tax advisers regarding specific questions as to the
effect of federal, state or local income taxes on any investment in the Mileage
Trust, as well as any tax consequences relating to the receipt of AAdvantage
Miles. For further tax information, see the SAI.
 
GENERAL INFORMATION
 
   
    The Mileage Trust currently is comprised of nine separate investment
portfolios. Each Fund's shares can be issued in an unlimited number. The Money
Market Fund consists of two classes of shares and all other Funds consist of one
class of shares. Each share represents an equal proportionate beneficial
interest in that Fund and is entitled to one vote. Only shares of a particular
class may vote on matters affecting that class. Only shares of a particular Fund
may vote on matters affecting that Fund. All shares of the Mileage Trust vote on
matters affecting it as a whole. Share voting rights are not cumulative, and
shares have no preemptive or conversion rights. Shares of the Mileage Trust are
nontransferable. Each series in the Mileage Trust will not be involved in any
vote involving a Portfolio in which it does not invest its assets. Shareholders
of all of the series of the Mileage Trust, however, will vote together to elect
Trustees of the Mileage Trust and for certain other matters. Under certain
circumstances, the shareholders of one or more series could control the outcome
of these votes.
    
 
                                                                      PROSPECTUS
 
                                       33
<PAGE>   41
 
    On most issues subjected to a vote of a Portfolio's interest holders, as
required by the 1940 Act, its corresponding Fund will solicit proxies from its
shareholders and will vote its interest in the Portfolio in proportion to the
votes cast by that Fund's shareholders. Because a Portfolio interest holder's
votes are proportionate to its percentage interests in that Portfolio, one or
more other Portfolio investors could, in certain instances, approve an action
against which a majority of the outstanding voting securities of its
corresponding Fund had voted. This could result in that Fund's redeeming its
investment in its corresponding Portfolio, which could result in increased
expenses for that Fund. Whenever the shareholders of a Fund are called to vote
on matters related to its corresponding Portfolio, the Mileage Trust Board shall
vote shares for which they receive no voting instructions in the same proportion
as the shares for which they do receive voting instructions. Any information
received from a Portfolio in the Portfolio's report to shareholders will be
provided to the shareholders of its corresponding Fund.
 
    As a Massachusetts business trust, the Mileage Trust is not obligated to
conduct annual shareholder meetings. However, the Mileage Trust will hold
special shareholder meetings whenever required to do so under the federal
securities laws or the Mileage Trust's Declaration of Trust or By-Laws. Trustees
can be removed by a shareholder vote at special shareholder meetings.
 
   
     As more fully described in the SAI, the following person may be deemed to
control this Fund by virtue of their ownership of more than 25% of the
outstanding shares of the Fund as of January 31, 1998:
    
 
   
<TABLE>
<S>                                                           <C>
AMERICAN AADVANTAGE SHORT-TERM BOND MILEAGE FUND
                                                                %
</TABLE>
    
 
SHAREHOLDER COMMUNICATIONS
 
   
    Shareholders will receive periodic reports, including annual and semi-annual
reports which will include financial statements showing the results of the
Funds' operations and other information. The financial statements of the Mileage
Trust and the AMR Trust will be audited by the independent auditors at least
annually. Shareholder inquiries and requests for information regarding the other
investment companies which also invest in the AMR Trust should be made in
writing to the Funds at P.O. Box 619003, MD5645, Dallas/Fort Worth Airport,
Texas 75261-9003 or by calling (800) 388-3344. Shareholder inquiries and
requests for information regarding the other investment companies which also
invest in the Equity 500 Index Portfolio should be made by calling (800)
730-1313
    
 
    NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND IN SALES
LITERATURE SPECIFICALLY APPROVED BY OFFICERS OF THE MILEAGE TRUST FOR USE IN
CONNECTION WITH THE OFFER OF ANY FUND'S SHARES, AND, IF GIVEN OR MADE, SUCH
OTHER INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED BY THE FUNDS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER IN ANY
JURISDICTION IN WHICH, OR TO ANY PERSON TO WHOM, SUCH OFFERING MAY NOT LAWFULLY
BE MADE.
 
   
American AAdvantage Mileage Funds is a registered service mark of AMR
Corporation. Mileage Class is a registered service mark and Platinum Class,
American AAdvantage Balanced Mileage Fund, American AAdvantage Growth and Income
Mileage Fund, American AAdvantage International Equity Mileage Fund, American
AAdvantage Intermediate Bond Mileage Fund, American AAdvantage Short-Term Bond
Mileage Fund, American AAdvantage Money Market Mileage Fund, American AAdvantage
Municipal Money Market Mileage Fund and American AAdvantage U.S. Government
Money Market Mileage Fund are service marks of AMR Investment Services, Inc.
    
 
PROSPECTUS
 
                                       34
<PAGE>   42
 
                                  -- NOTES --
<PAGE>   43
 
                                  -- NOTES --
<PAGE>   44
 
                   American Advantage Mileage Funds(SM) Logo
 
                                P.O. BOX 419643
                        KANSAS CITY, MISSOURI 64141-6643
                                 (800) 388-3344
<PAGE>   45
                      STATEMENT OF ADDITIONAL INFORMATION

                     AMERICAN AADVANTAGE MILEAGE FUNDS(sm)

   
                                 MARCH 1, 1998

         American AAdvantage Mileage Funds (the "Mileage Trust") is an
open-end, diversified management investment company composed of the American
AAdvantage Balanced Mileage Fund(sm) (the "Balanced Fund"), American AAdvantage
Growth and Income Mileage Fund(sm) (the "Growth and Income Fund"), American
AAdvantage International Equity Mileage Fund(sm) (the "International Equity
Fund"), American AAdvantage S&P 500 Index Mileage Fund (the "S&P 500 Index
Funds"), American AAdvantage Intermediate Bond Mileage Fund(sm) (the
"Intermediate Bond Fund"), American AAdvantage Short-Term Bond Mileage Fund(sm)
(the "Short-Term Bond Fund"), formerly the American AAdvantage Limited-Term
Income Mileage Fund, American AAdvantage Money Market Mileage Fund(sm) (the
"Money Market Fund"), American AAdvantage Municipal Money Market Mileage
Fund(sm) (the "Municipal Money Market Fund"), and American AAdvantage U.S.
Government Money Market Mileage Fund(sm), formerly the American AAdvantage U.S.
Treasury Money Market Mileage Fund (the "U.S. Government Money Market Fund"),
(individually, a "Fund" and, collectively, the "Funds"). All Funds consist of
one class of shares, except for the Money Market Fund, which consists of two
classes of shares. With respect to the Money Market Fund, this Statement of
Additional Information ("SAI") relates only to the Mileage Class.

         Each Fund, except the S&P 500 Index Fund, seeks its investment
objective by investing all of its investable assets in a corresponding
portfolio of the AMR Investment Services Trust ("AMR Trust") that has a similar
name and an identical investment objective to the investing Fund. The S&P 500
Index Fund invests all of its investable assets in the Equity 500 Index
Portfolio, which has an identical investment objective. The Equity 500 Index
Portfolio and the portfolios of the AMR Trust are referred to herein
individually as a "Portfolio" and, collectively, the "Portfolios." Each
Portfolio has an investment objective identical to the investing Fund. The AMR
Trust is a separate investment company managed by AMR Investment Services, Inc.
(the "Manager"). The Equity 500 Index Portfolio is a separate investment
company managed by Bankers Trust Company ("BT").


         This SAI should be read in conjunction with the Prospectus for the
Mileage Trust dated March 1,1998 ("Prospectus"), a copy of which may be
obtained without charge by calling (800) 388-3344.
    

         This SAI is not a prospectus and is authorized for distribution to
prospective investors only if preceded or accompanied by a current Prospectus.

                            INVESTMENT RESTRICTIONS

   
         Each Fund has the following fundamental investment policy that enables
it to invest in its corresponding Portfolio:
    

                 Notwithstanding any other limitation, the Fund may invest all
                 of its investable assets in an open-end management investment
                 company with substantially the same investment objectives,
                 policies and limitations as the Fund. For this purpose, "all
                 of the Fund's investable assets" means that the only
                 investment securities that will be held by the Fund will be
                 the Fund's interest in the investment company.

   
         All other fundamental investment policies and the non-fundamental
policies of each Fund and its corresponding Portfolio are identical. Therefore,
although the following discusses the investment policies of each Portfolio, the
AMR Trust's Board of Trustees ("AMR Trust Board") and the Equity 500 Index
Portfolio's Board of Trustees ("Equity 500 Index Portfolio Board"), it applies
equally to each Fund and the Mileage Trust's Board of Trustees ("Board").
    
<PAGE>   46
Portfolios of the AMR Trust

   
         In addition to the investment limitations noted in the Prospectus, the
following seven restrictions have been adopted by each Portfolio and may be
changed with respect to any Portfolio only by the majority vote of that
Portfolio's outstanding interests. "Majority of the outstanding voting
securities" under the Investment Company Act of 1940, as amended (the "1940
Act"), and as used herein means, with respect to the Portfolio, the lesser of
(a) 67% of the interests of the Portfolio present at the meeting if the holders
of more than 50% of the interests are present and represented at the interest
holders' meeting or (b) more than 50% of the interests of the Portfolio.
Whenever a Fund is requested to vote on a change in the investment restrictions
of its corresponding Portfolio, that Fund will hold a meeting of its
shareholders and will cast its votes as instructed by its shareholders. The
percentage of a Fund's votes representing that Fund's shareholders not voting
will be voted by the Board in the same proportion as those Fund shareholders
who do, in fact, vote.
    

   
No Portfolio of the AMR Trust may:
    

         1.      Purchase or sell real estate or real estate limited
         partnership interests, provided, however, that the Portfolio may
         invest in securities secured by real estate or interests therein or
         issued by companies which invest in real estate or interests therein
         when consistent with the other policies and limitations described in
         the Prospectus.

         2.      Purchase or sell commodities (including direct interests
         and/or leases in oil, gas or minerals) or commodities contracts,
         except with respect to forward foreign currency exchange contracts,
         foreign currency futures contracts and when-issued securities when
         consistent with the other policies and limitations described in the
         Prospectus.

         3.      Engage in the business of underwriting securities issued by
         others, except to the extent that, in connection with the disposition
         of securities, the Portfolio may be deemed an underwriter under
         federal securities law.

         4.      Make loans to any person or firm, provided, however, that the
         making of a loan shall not be construed to include (i) the acquisition
         for investment of bonds, debentures, notes or other evidences of
         indebtedness of any corporation or government which are publicly
         distributed or (ii) the entry into repurchase agreements and further
         provided, however, that each Portfolio may lend its investment
         securities to broker-dealers or other institutional investors in
         accordance with the guidelines stated in the Prospectus.

         5.      Purchase from or sell portfolio securities to its officers,
         Trustees or other "interested persons" of the AMR Trust, as defined in
         the 1940 Act, including its investment advisers and their affiliates,
         except as permitted by the 1940 Act and exemptive rules or orders
         thereunder.

         6.      Issue senior securities, except that the Portfolio may engage
         in when-issued and forward commitment transactions and the
         International Equity Portfolio may engage in currency futures and
         forward currency contracts.

         7.      Borrow money, except from banks or through reverse repurchase
         agreements for temporary purposes in an aggregate amount not to exceed
         10% of the value of its total assets at the time of borrowing. In
         addition, although not a fundamental policy, the Portfolios intend to
         repay any money borrowed before any additional portfolio securities
         are purchased. See "Other Information" for a further description
         regarding reverse repurchase agreements.

   
         The following non-fundamental investment restriction applies to each
Portfolio of the AMR Trust and may be changed with respect to a Portfolio by a
majority vote of the AMR Trust Board: no Portfolio of the AMR Trust may
purchase securities on margin, effect short sales (except that the Portfolio
may obtain such short-term credits as may be necessary for the clearance of
purchases or sales of securities) or purchase or sell call options or engage in
the writing of such options.

         All Portfolios of the AMR Trust may invest up to 10% of their total
assets in the securities of other investment companies to the extent permitted
by law. A Portfolio of the AMR Trust may incur duplicate advisory or management
fees when investing in another mutual fund.

Equity 500 Index Portfolio

         The following investment restrictions are "fundamental policies" of
the Equity 500 Index Portfolio and may be changed with respect to the Portfolio
only by the majority vote of the Portfolio's outstanding
    





                                       2
<PAGE>   47
   
interests, as defined above. Whenever the S&P 500 Index Fund is requested to
vote on a change in the fundamental policy of the Portfolio, the Fund will hold
a meeting of its shareholders and will cast its votes as instructed by its
shareholders. The percentage of the Fund's votes representing Fund shareholders
not voting will be voted by the Board in the same proportion as the Fund
shareholders who do, in fact, vote.

The Equity 500 Index Portfolio may not:

         1.      Borrow money or mortgage or hypothecate assets of the
         Portfolio, except that in an amount not to exceed 1/3 of the current
         value of the Portfolio's net assets, it may borrow money as a
         temporary measure for extraordinary or emergency purposes and enter
         into reverse repurchase agreements or dollar roll transactions, and
         except that it may pledge, mortgage or hypothecate not more than 1/3
         of such assets to secure such borrowings (it is intended that money
         would be borrowed only from banks and only either to accommodate
         requests for the withdrawal of beneficial interests (redemption of
         shares) while effecting an orderly liquidation of portfolio securities
         or to maintain liquidity in the event of an unanticipated failure to
         complete a portfolio security transaction or other similar situations)
         or reverse repurchase agreements, provided that collateral
         arrangements with respect to options and futures, including deposits
         of initial deposit and variation margin, are not considered a pledge
         of assets for purposes of this restriction and except that assets may
         be pledged to secure letters of credit solely for the purpose of
         participating in a captive insurance company sponsored by the
         Investment Company Institute; for additional related restrictions, see
         clause (1) below. (As an operating policy, the Portfolio may not
         engage in dollar roll transactions).

         2.      Underwrite securities issued by other persons except insofar
         as the Portfolio may technically be deemed an underwriter under the
         Securities Act of 1933 (the "1933 Act") in selling a portfolio
         security.

         3.      Make loans to other persons except: (a) through the use of
         repurchase agreements or the purchase of short-term obligations; or
         (b) by purchasing a portion of an issue of debt securities of types
         distributed publicly or privately.

         4.      Purchase or sell real estate (including limited partnership
         interests but excluding securities secured by real estate or interests
         therein), interests in oil, gas or mineral leases, commodities or
         commodity contracts (except futures and option contracts) in the
         ordinary course of business (except that the Portfolio may hold and
         sell, for the Portfolio's portfolio, real estate acquired as a result
         of the Portfolio's ownership of securities).

         5.      Concentrate its investments in any particular industry
         (excluding U.S. Government securities), but if it is deemed
         appropriate for the achievement of the Portfolio's investment
         objective, up to 25% of its total assets may be invested in any one
         industry.

         6.      Issue any senior security (as that term is defined in the 1940
         Act) if such issuance is specifically prohibited by the 1940 Act or
         the rules and regulations promulgated thereunder, provided that
         collateral arrangements with respect to options and futures, including
         deposits of initial deposit and variation margin, are not considered
         to be the issuance of a senior security for purposes of this
         restriction.

         In order to comply with certain statutes and policies the Equity 500
Index Portfolio will not as a matter of operating policy:

         1.      Borrow money (including through dollar roll transactions) for
         any purpose in excess of 10% of the Portfolio's total assets (taken at
         cost) except that the Portfolio may borrow for temporary or emergency
         purposes up to 1/3 of its total assets.

         2.      Pledge, mortgage or hypothecate for any purpose in excess of
         10% of the Portfolio's total assets (taken at market value), provided
         that collateral arrangements with respect to options and
    





                                       3
<PAGE>   48
   
         futures, including deposits of initial deposit and variation margin,
         are not considered a pledge of assets for purposes of this
         restriction.

         3.      Purchase any security or evidence of interest therein on
         margin, except that such short-term credit as may be necessary for the
         clearance of purchases and sales of securities may be obtained and
         except that deposits of initial deposit and variation margin may be
         made in connection with the purchase, ownership, holding or sale of
         futures.

         4.      Sell any security that it does not own unless by virtue of its
         ownership of other securities it has at the time of sale a right to
         obtain securities, without payment of further consideration,
         equivalent in kind and amount to the securities sold and provided that
         if such right is conditional the sale is made upon the same
         conditions.

         5.      Invest for the purpose of exercising control or management.

         6.      Purchase securities issued by any investment company except by
         purchase in the open market where no commission or profit to a sponsor
         or dealer results from such purchase other than the customary broker's
         commission, or except when such purchase, though not made in the open
         market, is part of a plan of merger or consolidation; provided,
         however, that securities of any investment company will not be
         purchased for the Portfolio if such purchase at the time thereof would
         cause: (a) more than 10% of the Portfolio's total assets (taken at the
         greater of cost or market value) to be invested in the securities of
         such issuers; (b) more than 5% of the Portfolio's total assets (taken
         at the greater of cost or market value) to be invested in any one
         investment company; or (c) more than 3% of the outstanding voting
         securities of any such issuer to be held for the Portfolio; and,
         provided further that, except in the case of merger or consolidation,
         the Portfolio shall not invest in any other open-end investment
         company unless the Portfolio (1) waives the investment advisory fee
         with respect to assets invested in other open-end investment companies
         and (2) incurs no sales charge in connection with the investment (as
         an operating policy, the Portfolio will not invest in another open-end
         registered investment company).

         7.      Invest more than 15% of the Portfolio's net assets (taken at
         the greater of cost or market value) in securities that are illiquid
         or not readily marketable not including (a) Rule 144A securities that
         have been determined to be liquid by the Equity 500 Index Portfolio
         Board; and (b) commercial paper that is sold under section 4(2) of the
         1933 Act which: (i) is not traded flat or in default as to interest or
         principal; and (ii) is rated in one of the two highest categories by
         at least two nationally recognized statistical rating organizations
         and the Equity 500 Index Portfolio Board has determined the commercial
         paper to be liquid; or (iii) is rated in one of the two highest
         categories by one nationally recognized statistical rating agency and
         the Equity 500 Index Portfolio Board has determined that the
         commercial paper is equivalent quality and is liquid.

         8.      Invest more than 10% of the Portfolio's total assets (taken at
         the greater of cost or market value) in securities that are restricted
         as to resale under the 1933 Act (other than Rule 144A securities
         deemed liquid by the Equity 500 Index Portfolio Board).

         9.      No more than 5% of the Portfolio's total assets are invested
         in securities issued by issuers which (including predecessors) have
         been in operation less than three years.

         10.     With respect to 75% of the Portfolio's total assets, purchase
         securities of any issuer if such purchase at the time thereof would
         cause the Portfolio to hold more than 10% of any class of securities
         of such issuer, for which purposes all indebtedness of an issuer shall
         be deemed a single class and all preferred stock of an issuer shall be
         deemed a single class, except that futures or option contracts shall
         not be subject to this restriction.

         11.     If the Portfolio is a "diversified" fund with respect to 75%
         of its assets, invest more than 5% of its total assets in the
         securities (excluding U.S. Government securities) of any one issuer.
    





                                       4
<PAGE>   49
   
         12.     Purchase or retain in the Portfolio's portfolio any securities
         issued by an issuer any of whose officers, directors, trustees or
         security holders is an officer or Trustee of the Equity 500 Index
         Portfolio, or is an officer or partner of BT, if after the purchase of
         the securities of such issuer for the Portfolio one or more of such
         persons owns beneficially more than 1/2 of 1% of the shares or
         securities, or both, all taken at market value, of such issuer, and
         such persons owning more than 1/2 of 1% of such shares or securities
         together own beneficially more than 5% of such shares or securities,
         or both, all taken at market value.

         13.     Invest more than 5% of the Portfolio's net assets in warrants
         (valued at the lower of cost or market) (other than warrants acquired
         by the Portfolio as part of a unit or attached to securities at the
         time of purchase), but not more than 2% of the Portfolio's net assets
         may be invested in warrants not listed on the NYSE or the AMEX.

         14.     Make short sales of securities or maintain a short position,
         unless at all times when a short position is open it owns an equal
         amount of such securities or securities convertible into or
         exchangeable, without payment of any further consideration, for
         securities of the same issue and equal in amount to, the securities
         sold short, and unless not more than 10% of the Portfolio's net assets
         (taken at market value) is represented by such securities, or
         securities convertible into or exchangeable for such securities, at
         any one time (the Portfolio has no current intention to engage in
         short selling).

         15.     Write puts and calls on securities unless each of the
         following conditions are met: (a) the security underlying the put or
         call is within the investment policies of the Portfolio and the option
         is issued by the Options Clearing Corporation, except for put and call
         options issued by non-U.S. entities or listed on non-U.S.  securities
         or commodities exchanges; (b) the aggregate value of the obligations
         underlying the puts determined as of the date the options are sold
         shall not exceed 5% of the Portfolio's net assets; (c) the securities
         subject to the exercise of the call written by the Portfolio must be
         owned by the Portfolio at the time the call is sold and must continue
         to be owned by the Portfolio until the call has been exercised, has
         lapsed, or the Portfolio has purchased a closing call, and such
         purchase has been confirmed, thereby extinguishing the Portfolio's
         obligation to deliver securities pursuant to the call it has sold; and
         (d) at the time a put is written, the Portfolio establishes a
         segregated account with its custodian consisting of cash or short-term
         U.S. Government securities equal in value to the amount the Portfolio
         will be obligated to pay upon exercise of the put (this account must
         be maintained until the put is exercised, has expired, or the
         Portfolio has purchased a closing put, which is a put of the same
         series as the one previously written).

         16.     Buy and sell puts and calls on securities, stock index futures
         or options on stock index futures, or, financial futures or options on
         financial futures unless such options are written by other persons
         and: (a) the options or futures are offered through the facilities of
         a national securities association or are listed on a national
         securities or commodities exchange, except for put and call options
         issued by non-U.S. entities or listed on non-U.S. securities or
         commodities exchanges; (b) the aggregate premiums paid on all such
         options which are held at any time do not exceed 20% of the
         Portfolio's total net assets; and (c) the aggregate margin deposits
         required on all such futures or options thereon held at any time do
         not exceed 5% of the Portfolio's total assets.
    

        TRUSTEES AND OFFICERS OF THE MILEAGE TRUST AND THE AMR TRUST

   
         The Board provides broad supervision over the Mileage Trust's affairs.
The Manager is responsible for the management of Mileage Trust's assets, and
the Mileage Trust's officers are responsible for the Mileage Trust's
operations. The Trustees and officers of the Mileage Trust and AMR Trust are
listed below, together with their principal occupations during the past five
years. Unless otherwise indicated, the address of each person listed below is
4333 Amon Carter Boulevard, MD 5645, Fort Worth, Texas 76155.
    





                                       5
<PAGE>   50
   
<TABLE>
<CAPTION>
                                       POSITION WITH
 NAME, AGE AND ADDRESS                  EACH TRUST               PRINCIPAL OCCUPATION DURING PAST 5 YEARS
 ---------------------                 ------------              ----------------------------------------
 <S>                                   <C>                       <C>
 William F. Quinn* (50)                Trustee and President     President,  AMR  Investment   Services,  Inc.   (1986-
                                                                 Present);   Chairman,   American   Airlines  Employees
                                                                 Federal Credit Union (1989-Present); Trustee, American
                                                                 Performance Funds (1990-July 1994); Director, Crescent
                                                                 Real Estate Equities, Inc. (1994 -  Present); Trustee,
                                                                 American AAdvantage Funds (1987 - Present).

 Alan D. Feld(60)                      Trustee                   Partner, Akin, Gump, Strauss, Hauer & Feld, LLP (1960-
 1700 Pacific Avenue Suite 4100                                  Present)#;  Director,   Clear  Channel  Communications
 Dallas, Texas 75201                                             (1984-Present); Director, CenterPoint Properties, Inc.
                                                                 (1994-Present);  Trustee,  American  AAdvantage  Funds
                                                                 (1996-Present).

 Ben J. Fortson (65)                   Trustee                   President and CEO, Fortson Oil Company (1958-Present);
 301 Commerce Street                                             Director,   Kimbell  Art   Foundation  (1964-Present);
 Suite 3301                                                      Director, Burnett  Foundation (1987-Present); Honorary
 Forth Worth, Texas 76012                                        Trustee,  Texas  Christian  University (1986-Present);
                                                                 Trustee, American AAdvantage Funds (1996-Present).

 John S. Justin (80)                   Trustee                   Chairman   and   Chief   Executive   Officer,   Justin
 2821 West Seventh Street                                        Industries,  Inc.  (a   diversified  holding  company)
 Fort Worth, Texas 76107                                         (1969-Present);    Executive   Board    Member,   Blue
                                                                 Cross/Blue  Shield  of   Texas  (1985-Present);  Board
                                                                 Member, Zale Lipshy  Hospital (1993-Present); Trustee,
                                                                 Texas  Christian  University  (1980-Present); Director
                                                                 and Executive Board  Member, Moncrief Radiation Center
                                                                 (1985-Present); Director, Texas New Mexico Enterprises
                                                                 (1984-1993);  Director, Texas New Mexico Power Company
                                                                 (1979-1993); Trustee, American AAdvantage Funds (1989-
                                                                 Present).

 Stephen D. O'Sullivan* (62)           Trustee                   Consultant   (1994-Present);    Vice   President   and
                                                                 Controller  (1985-  1994),  American  Airlines,  Inc.;
                                                                 Trustee, American AAdvantage Funds (1987-Present).

 Roger T. Staubach (56)                Trustee                   Chairman of  the Board and Chief  Executive Officer of
 6750 LBJ Freeway                                                The  Staubach   Company  (a  commercial  real   estate
 Dallas, Texas 75240                                             company) (1982-present); Director, Halliburton Company
                                                                 (1991-present);  Director,  First   USA,  Inc.  (1993-
                                                                 present);   Director,  Brinker   International  (1993-
                                                                 present);  Director,  Columbus   Realty  Trust  (1994-
                                                                 present); Member of the Advisory Board, The  Salvation
                                                                 Army; Trustee, Institute for Aerobics Research; Member
                                                                 of    Executive    Council,    Daytop/Dallas;   former
                                                                 quarterback  of   the  Dallas   Cowboys   professional
                                                                 football  team;  Trustee,  American  AAdvantage  Funds
                                                                 (1995-Present).

</TABLE>
    




                                       6
<PAGE>   51
   
<TABLE>
<CAPTION>
                                       POSITION WITH
 NAME, AGE AND ADDRESS                  EACH TRUST               PRINCIPAL OCCUPATION DURING PAST 5 YEARS
 ---------------------                 ------------              ----------------------------------------
 <S>                                   <C>                       <C>
 Kneeland Youngblood, M.D. (41)        Trustee                   Physician  (1982-Present);  President  (1983-Present),
 2305 Cedar Springs Road                                         Youngblood Enterprises, Inc. (a health care investment
 Suite 401                                                       and management  firm);  Trustee,  Teachers  Retirement
 Dallas, Texas 75201                                             System  of  Texas   (1993-Present);  Director,  United
                                                                 States    Enrichment    Corporation    (1993-Present),
                                                                 Director,  Just For  the Kids  (1995-Present); Member,
                                                                 Council on Foreign  Relations (1995-Present); Trustee,
                                                                 American AAdvantage Funds (1996-Present).

 Nancy A. Eckl (35)                    Vice President            Vice President,  AMR Investment Services, Inc.  (1990-
                                                                 Present).

 Michael W. Fields (44)                Vice President            Vice President,  AMR Investment Services, Inc.  (1988-
                                                                 Present).

 Barry Y. Greenberg (34)               Vice President and        Director,  Legal   and  Compliance,   AMR   Investment
                                       Assistant Secretary       Services, Inc. (1995-Present); Branch Chief (1992-June
                                                                 1995), and Staff Attorney (1988-1992),  Securities and
                                                                 Exchange Commission.

 Rebecca L. Harris (31)                Treasurer                 Director of Finance  (1995-Present), Controller (1991-
                                                                 1995), AMR Investment Services, Inc.

 John B. Roberson (39)                 Vice President            Vice President, AMR Investment  Services, Inc.  (1991-
                                                                 Present).

 Thomas E. Jenkins, Jr. (31)           Assistant Secretary       Senior  Compliance  Analyst,  AMR Investment  Services,
                                                                 Inc. (1996-Present); Staff  Accountant (1994-1996)  and
                                                                 Compliance   Examiner   (1991-1994),   Securities   and
                                                                 Exchange Commission.

 Adriana R. Posada (43)                Assistant Secretary       Senior    Compliance    Analyst   (1996-Present)    and
                                                                 Compliance   Analyst   (1993-  1996),   AMR  Investment
                                                                 Services, Inc.; Special Sales  Representative, American
                                                                 Airlines, Inc. (1991-1993).

 Clifford J. Alexander (54)            Secretary                 Partner, Kirkpatrick & Lockhart LLP (law firm)
 1800 Massachusetts Ave., NW
 Washington, D.C. 20036
 Robert J. Zutz (45)                   Assistant Secretary       Partner, Kirkpatrick & Lockhart LLP (law firm)
 1800 Massachusetts Ave., NW
 Washington, D.C. 20036
</TABLE>
    


                                       7
<PAGE>   52
#        The law firm of Akin, Gump, Strauss, Hauer & Feld LLP ("Akin, Gump")
         provides legal services to American Airlines, Inc., an affiliate of
         the Manager. Mr. Feld has advised the Trusts that he has had no
         material involvement in the services provided by Akin, Gump to
         American Airlines, Inc. and that he has received no material benefit
         in connection with these services. Akin, Gump does not provide legal
         services to the Manager of AMR Corporation.

*        Messrs. Quinn and O'Sullivan, by virtue of their current or former
         positions, are deemed to be "interested persons" of the Mileage Trust
         and the AMR Trust as defined by the 1940 Act.

         All Trustees and officers as a group own less than 1% of the
outstanding shares of any of the Funds.

   
         As compensation for their service to theMileage Trust and the AMR
Trust, the Independent Trustees and their spouses receive free air travel from
American Airlines, Inc., an affiliate of the Manager. The Mileage Trust and the
AMR Trust do not pay for these travel arrangements. However, the Trusts
compensate each Trustee with payments in an amount equal to the Trustees'
income tax on the value of this free airline travel. Mr. O'Sullivan, who as a
retiree of American Airlines, Inc. already receives free airline travel,
receives compensation annually of up to three round trip airline tickets for
each of his three adult children. Trustees are also reimbursed for any expenses
incurred in attending Board meetings. These amounts are reflected in the
following table for the fiscal year ended October 31, 1997
    


   
<TABLE>
<CAPTION>
                                                                       Pension Or                                     Total
                                                 Aggregate         Retirement Benefits         Estimated           Compensation
                                                Compensation        Accrued As Part Of           Annual           From American
                                                  From The                 The               Benefits Upon          AAdvantage
             Name Of Trustee                       Trust             Trust's Expenses          Retirement         Funds Complex
             ---------------                    ------------       -------------------       -------------        -------------
             <S>                                  <C>                       <C>                    <C>               <C>
             William F. Quinn                     $     0                   $0                     $0                $     0
             John S. Juston                       $   225                   $0                     $0                $   901
             Alan D. Feld                         $15,962                                                            $63,850
             Ben J. Fortson                       $ 6,802                                                            $27,709
             Stephen D. O'Sullivan                $   493                   $0                     $0                $ 1,973
             Roger T. Staubach                    $ 8,269                   $0                     $0                $33,076
             Kneeland Youngblood, M.D.            $ 9,525                                                            $38,099
</TABLE>
    

   
         TRUSTEES AND OFFICERS OF THE EQUITY 500 INDEX PORTFOLIO

         The Equity 500 Index Portfolio Board oversees the activities of the
Equity 500 Index Portfolio and reviews contractual arrangements with companies
that provide services to the Portfolio. The Trustees and officers of the Equity
500 Index Portfolio and their principal occupations during the past five years
are set forth below. Their titles may have varied during that period. Unless
otherwise indicated, the address of each Trustee and officer is c/o Edgewood
Services, Inc., Clearing Operations, P.O. Box 897, Pittsburgh, PA 15230-0897.
    





                                       8
<PAGE>   53
   
<TABLE>
<CAPTION>
                                     POSITION WITH
                                     EQUITY 500 INDEX
 NAME, AGE AND ADDRESS               PORTFOLIO                PRINCIPAL OCCUPATION DURING PAST 5 YEARS
 ---------------------               ----------------         ----------------------------------------
 <S>                                 <C>                      <C>
 Charles P. Biggar (65)              Trustee                  Retired;  Director  of  Chase/NBW  Bank  Advisory  Board;
 12 Hitching Post Lane                                        Director, Batemen, Eichler, Hill Richards Inc.;  formerly
 Chappaqua, NY 10514                                          Vice  President  of International  Business  Machines and
                                                              President  of   the  National  Services   and  the  Field
                                                              Engineering Divisions of IBM.

 S. Leland Dill (65)                 Trustee                  Retired;   Director,   Coutts   Group,  Coutts   (U.S.A.)
 5070 North Ocean Drive                                       International, and Coutts Trust Holdings Ltd.;  Director,
 Singer Island, FL 33404                                      Zweig  Series  Trust;  formerly  Partner  of   KPMG  Peat
                                                              Marwick;  Director,  Vinters International  Company Inc.;
                                                              General  Partner   of   Pemco  (an   investment   company
                                                              registered under the 1940 Act).

 Philip Saunders, Jr. (60)           Trustee                  Principal,  Philip   Saunders  Associates   (Consulting);
 445 Glen Road                                                former Director  of Financial Industry Consulting, Wolf &
 Weston, MA 02193                                             Company;   President,   John   Hancock    Home   Mortgage
                                                              Corporation; and  Senior Vice  President of  Treasury and
                                                              Financial Services,  John Hancock  Mutual Life  Insurance
                                                              Company, Inc.

 Ronald M. Petnuch (36)              President and            Senior   Vice   President,  Federated   Services  Company
                                     Treasurer                ("FSC");   formerly   Director   of  Proprietary   Client
                                                              Services, Federated Administrative  Services ("FAS")  and
                                                              formerly   Associate    Corporate   Counsel,    Federated
                                                              Investors ("FI").

 Charles L. Davis, Jr. (36)          Vice President and       Vice President, FAS.
                                     Assistant Treasurer

 Jay S. Neuman (46)                  Secretary                Corporate Counsel, FI.

</TABLE>
    


   
   No person who is an officer or director of BT is an officer or Trustee of
the Equity 500 Index Portfolio. No director, officer or employee of Edgewood
Services, Inc. ("Edgewood") or any of its affiliates will receive any
compensation from the Equity 500 Index Portfolio for serving as an officer or
Trustee of the Equity 500 Index Portfolio.

      The following table reflects fees paid to the Trustees of the Equity 500
Index Portfolio for their services to that Portfolio and to certain other
investment companies advised by BT (the "BT Fund Complex") for the year ended
December 31, 1997.
    





                                       9
<PAGE>   54
   
<TABLE>
<CAPTION>
                                                  AGGREGATE COMPENSATION          TOTAL COMPENSATION FROM
                                                      FROM THE EQUITY                 BT FUNDS COMPLEX
 NAME OF TRUSTEE                                    500 INDEX PORTFOLIO               PAID TO TRUSTEES
 ---------------                                  -----------------------         -----------------------
 <S>                                                         <C>                             <C>
 Charles P. Biggar                                           $                               $
 S. Leland Dill                                              $                               $
 Philip Saunders, Jr.                                        $                               $
</TABLE>
    


           MANAGEMENT, ADMINISTRATIVE SERVICES AND DISTRIBUTION FEES

   
      As described more fully in the Prospectus, the Manager is paid a
management fee as compensation for paying investment advisory fees and for
providing the Portfolios with advisory and asset allocation services.
Management fees incurred by the Portfolios for the fiscal years ended October
31 were approximately as follows: 1996, $10,853,000 of which approximately
$5,403,000 was paid by the Manager to the other investment advisers; 1997,
$13,730,443 of which approximately $7,061,014 was paid by the Manager to the
other investment advisers Management fees in the amount of approximately
$44,000 and $7,309 were waived by the Manager during the fiscal years ended
October 31, 1996 and 1997, respectively.

      In addition, pursuant to a Management Agreement, the Manager is paid a
fee for providing administrative and management services (other than investment
advisory services) to the Funds. Such fees for the fiscal years ended October
31, 1996 and 1997 were approximately $95,944 and $275,120, respectively.

      Also as described more fully in the Prospectus, the Manager (or another
entity approved by the Board) under a distribution plan adopted pursuant to
Rule 12b-1 under the 1940 Act, is paid by each Fund 0.25% per annum of the
average daily net assets of each Fund for distribution-related services.
Distribution fees pursuant to Rule 12b-1 under the 1940 Act for the fiscal
years ended October 31, 1996 and 1997 were approximately $188,590 and $470,306,
respectively.

      BT provides administrative services to the Equity 500 Index Portfolio.
Under the administration and services agreement between the Equity 500 Index
Portfolio and BT, BT is obligated on a continuous basis to provide such
administrative services as the Equity 500 Index Portfolio Board reasonably
deems necessary for the proper administration of the Portfolio. BT generally
will assist in all aspects of the Portfolio's operations; supply and maintain
office facilities (which may be in BT's own offices), statistical and research
data, data processing services, clerical, accounting, bookkeeping and
recordkeeping services (including without limitation the maintenance of such
books and records as are required under the 1940 Act and the rules thereunder,
except as maintained by other agents), internal auditing, executive and
administrative services, and stationary and office supplies; prepare reports to
investors; prepare and file tax returns; supply financial information and
supporting data for reports to and filing with the SEC and various state Blue
Sky authorities; supply supporting documentation for meetings of the Equity 500
Index Portfolio Board; provide monitoring reports and assistance regarding
compliance with its Declaration of Trust, By-Laws, investment objectives and
policies and with Federal and state securities laws; arrange for appropriate
insurance coverage; calculate net asset values, net income and realized capital
gains or losses; and negotiate arrangements with, and supervise and coordinate
the activities of, agents and others to supply services.

      Pursuant to a sub-administration agreement between BT and Federated
Services Company ("Federated") (the "Sub- Administration Contract"), Federated
performs such sub-administration duties for the Equity 500 Index Portfolio as
from time to time may be agreed upon by BT and Federated. The
Sub-Administration Contract provides that Federated will receive such
compensation as from time to time may be agreed upon by Federated and BT. All
such compensation will be paid by BT.

      For the years ended December 31, 1995, 1996 and 1997, BT earned,
$385,265, $752,981 and $XXX,XXX, respectively, as compensation for
administrative and other services provided to the Equity 500 Index Portfolio.
    





                                       10
<PAGE>   55

   
      Brokers Transaction Services, Inc. ("BTS") is the distributor of the
Funds' shares, and, as such, receives an annualized fee of $50,000 from the
Manager for distributing the shares of the Mileage Trust and the American
AAdvantage Funds.
    


                          APPROACH TO STOCK SELECTION

   
      Investment advisers to the corresponding Portfolios of the Balanced, the
Growth and Income and the International Equity Funds will select equity
securities which, in their opinion, have above average growth potential and are
also selling at a discount to the market. This approach focuses on the purchase
of a diverse group of stocks below their perceived economic value. Each of the
investment advisers determines the growth prospects of firms based upon a
combination of internal and external research using fundamental economic cycle
analysis and changing economic trends.  The determination of value is based
upon the analysis of several characteristics of the issuer and its equity
securities including price to earnings ratio, price to book value ratio, assets
carried below market value, financial strength and dividend yield.
    


                              REDEMPTIONS IN KIND

      Although each Fund intends to redeem shares in cash, each reserves the
right to pay the redemption price in whole or in part by a distribution of
readily marketable securities held by the applicable Fund's corresponding
Portfolio.  However, shareholders always will be entitled to redeem shares for
cash up to the lesser of $250,000 or 1% of the applicable Fund's net asset
value during any 90 day period. Redemption in kind is not as liquid as a cash
redemption. In addition, if redemption is made in kind, shareholders who
receive securities and sell them could receive less than the redemption value
of their securities and could incur certain transactions costs.

                         INVESTMENT ADVISORY AGREEMENTS

   
      Separate Investment Advisory Agreements between the investment advisers
(except Brandywine Asset Management, Inc.) of the Balanced, the Growth and
Income, the International Equity , the Intermediate Bond, the Short-Term Bond
Funds and their corresponding Portfolios, as described in the Prospectus, were
initially approved by the Board, the AMR Trust Board and the initial
shareholders of the Mileage Trust and the AMR Trust effective as of October 1,
1995. An Investment Advisory Agreement with Brandywine Asset Management, Inc.
was approved by the shareholders of the Mileage Trust and interest holders of
the AMR Trust effective May 1, 1996. Each Fund Investment Advisory Agreement
provides that to the extent a Fund invests all of its investable assets in its
corresponding Portfolio, the adviser will not receive an advisory fee under that
Agreement. Following the acquisition of Hotchkis and Wiley ("Hotchkis") by
Merrill Lynch, Pierce, Fenner & Smith, Inc., a new Advisory Agreement with
Hotchkis was approved by the Board, effective as of November 12, 1996. Following
the acquisition of Brandywine by Legg Mason, Inc., a new Advisory Agreement with
Brandywine was approved, effective January XX, 1998.

      Under the terms of the Equity 500 Index Portfolio's Investment Advisory
Agreement with BT, BT manages the Equity 500 Index Portfolio subject to the
supervision and direction of the Equity 500 Index Portfolio Board. BT has
agreed to: (1) act in strict conformity with the Equity 500 Index Portfolio's
Declaration of Trust and the 1940 Act, as the same may from time to time be
amended; (2) manage the Equity 500 Index Portfolio in accordance with the
Portfolio's investment objective, restrictions and policies; (3) make
investment decisions for the Equity 500 Index Portfolio; and (4) place purchase
and sale orders for securities and other financial institutions on behalf of
the Equity 500 Index Portfolio.

      BT bears all expenses in connection with the performance of services
under the Agreement. The S&P 500 Index Fund and the Equity 500 Index Portfolio
each bear certain other expenses incurred in their operation, including: taxes,
interest, brokerage fees and commissions, if any; fees of Trustees of the
Portfolio or Trustees of the Trust who are not officers, directors or employees
of BT, Edgewood, the Manager or any of their affiliates; SEC fees and state
Blue Sky qualification fees; charges of custodians
    





                                       11
<PAGE>   56
   
and transfer and dividend disbursing agents; certain insurance premiums;
outside auditing and legal expenses; costs attributable to investor services,
including telephone and personnel expenses; costs of preparing and printing
prospectuses and statements of additional information for regulatory purposes
and for distribution to existing shareholders; costs of shareholders' reports
and meetings of shareholders, officers and Trustees of the Equity 500 Index
Portfolio or Trustees of the Trust, and any extraordinary expenses.

      For the years ended December 31, 1995, 1996 and 1997, BT earned $770,530,
$1,505,963 and $XXX,XXX, respectively, as compensation for investment advisory
services provided to the Equity 500 Index Portfolio. During the same periods,
BT reimbursed $418,814, $870,024 and $XXX,XXX, respectively, to the Equity 500
Index Portfolio to cover expenses.

      BT may have deposit, loan and other commercial banking relationships with
the issuers of obligations that may be purchased on behalf of the Equity 500
Index Portfolio, including outstanding loans to such issuers that could be
repaid in whole or in part with the proceeds of securities so purchased. Such
affiliates deal, trade and invest for their own accounts in such obligations
and are among the leading dealers of various types of such obligations. BT has
informed the Equity 500 Index Portfolio that, in making its investment
decisions, it does not obtain or use material inside information in its
possession or in the possession of any of its affiliates. In making investment
recommendations for the Equity 500 Index Portfolio, BT will not inquire or take
into consideration whether an issuer of securities proposed for purchase or
sale by the Equity 500 Index Portfolio is a customer of BT, its parent or its
subsidiaries or affiliates and, in dealing with its customers, BT, its parent,
subsidiaries and affiliates will not inquire or take into consideration whether
securities of such customers are held by any fund managed by BT or any such
affiliate.
    

      Each Investment Advisory Agreement will automatically terminate if
assigned, and may be terminated without penalty at any time by the Manager, by
a vote of a majority of the Trustees or by a vote of a majority of the
outstanding voting securities of the applicable Fund on no less than thirty
(30) days' nor more than sixty (60) days' written notice to the investment
adviser, or by the investment adviser upon sixty (60) days' written notice to
the Trust. The Investment Advisory Agreements will continue in effect provided
that annually such continuance is specifically approved by a vote of the
Trustees, including the affirmative votes of a majority of the Trustees who are
not parties to the Agreement or "interested persons" (as defined in the 1940
Act) of any such party, cast in person at a meeting called for the purpose of
considering such approval, or by the vote of shareholders.

                       PORTFOLIO SECURITIES TRANSACTIONS

      The Investment Advisory Agreements provide, in substance, that in
executing portfolio transactions and selecting brokers or dealers, the
principal objective of each investment adviser is to seek the best net price
and execution available. It is expected that securities ordinarily will be
purchased in the primary markets, and that in assessing the best net price and
execution available, each investment adviser shall consider all factors it
deems relevant, including the breadth of the market in the security, the price
of the security, the financial condition and execution capability of the broker
or dealer and the reasonableness of the commission, if any, for the specific
transaction and on a continuing basis.

   
      BT may utilize the expertise of any of its worldwide subsidiaries and
affiliates to assist in its role as investment adviser. All orders for
investment transactions on behalf of the Equity 500 Index Portfolio are placed
by BT with broker-dealers and other financial intermediaries that it selects,
including those affiliated with BT. A BT affiliate will be used in connection
with a purchase or sale of an investment for the Equity 500 Index Portfolio
only if BT believes that the affiliate's charge for the transaction does not
exceed usual and customary levels. The Equity 500 Index Portfolio will not
invest in obligations for which BT or any of its affiliates is the ultimate
obligor or accepting bank. The Portfolio may, however, invest in the
obligations of correspondents and customers of BT.
    

      In selecting brokers or dealers to execute particular transactions,
investment advisers are authorized to consider the "brokerage and research
services" (as those terms are defined in Section 28(e) of the Securities
Exchange Act of 1934), provision of statistical quotations (including the
quotations necessary to determine a Portfolio's net asset value), the sale of
Mileage Trust (or American AAdvantage Funds') shares by such broker or the
servicing of Mileage Trust (or American AAdvantage Funds') shareholders by such
broker, and other





                                       12
<PAGE>   57
information provided to the applicable Portfolio, to the Manager and/or to the
investment advisers (or their affiliates), provided, however, that the
investment adviser determines that it has received the best net price and
execution available. The investment advisers are also authorized to cause a
Portfolio to pay a commission to a broker or dealer who provides such brokerage
and research services for executing a portfolio transaction that exceeds the
amount of the commission another broker or dealer would have charged for
effecting that transaction. The Trustees, the Manager or the investment
advisers, as appropriate, must determine in good faith, however, that such
commission was reasonable in relation to the value of the brokerage and
research services provided viewed in terms of that particular transaction or in
terms of all the accounts over which the Manager or the investment adviser
exercises investment discretion.

   
      For the fiscal years ended October 31, 1996 and 1997, the following
brokerage commissions were paid by the corresponding Portfolios.
    

   
<TABLE>
<CAPTION>
                   Portfolio                        1996            1997
                   ----------                       ----            ----
                   <S>                              <C>             <C>
                   Balanced                         $503,947        $562,493
                   Growth and Income                $956,767        $1,192,792
                   International Equity             $544,844        $956,160
                   Intermediate Bond*               $0              $0
                   Short-Term Bond                  $0              $0
                   Money Market Funds               $0              $0
</TABLE>
    

   
      *The Intermediate Bond Portfolio commenced operations on September 15,
1997.

      The commissions listed above were paid by the corresponding Portfolios of
the AMR Trust. Shareholders of the Funds bear only their pro-rata portion.

      For the years ended December 31, 1995, 1996 and 1997 the Equity 500 Index
Portfolio paid the following brokerage commissions: $172,924, $289,791 and
$XXX,XXX. The S&P 500 Index Fund was not operational prior to March 1, 1998.
Shareholders of the S&P 500 Index Fund bear only their pro-rata portion of
brokerage commissions.

      Following is the portfolio turnover rate for the corresponding Portfolios
of the Funds for the fiscal years ended October 31, 1996 and 1997.
    


   
<TABLE>
<CAPTION>
                   Portfolio                        1996            1997
                   ---------                        ----            ----
                   <S>                             <C>           <C>
                   Balanced                          76%            %
                   Growth and Income                 40%            %
                   International Equity              19%            %
                   Intermediate Bond                
                   Short-Term Bond                  304%            %
                   Equity 500 Index Portfolio        15%            %
</TABLE>
    

   
      High portfolio turnover can increase a Fund's transaction costs and
generate additional capital gains or losses.  The high portfolio turnover rate
for the Short-Term Bond Portfolio was due to the repositioning of the portfolio
to a different internal benchmark. The portfolio turnover rate for the Equity
500 Index Portfolio is for its fiscal years ended December 31, 1996, and
December 31, 1997. The Intermediate Bond Portfolio had not commenced operations
as of October 31, 1997.

      The fees of the investment advisers are not reduced by reason of receipt
of such brokerage and research services.  However, with disclosure to and
pursuant to written guidelines approved by the AMR Trust Board, or the Equity
500 Index Portfolio Board, an investment adviser of a Portfolio or its
affiliated broker-dealer may execute portfolio transactions and receive usual
and customary brokerage commissions (within the meaning of Rule 17e-1 under the
1940 Act) for doing so. During the fiscal year ended October 31, 1997, the
Balanced Portfolio and the Growth and Income Portfolio paid $XXXX and $XXXX.
respectively, in brokerage commissions to XXXXXXXXX. The percentages of total
commissions of the Balanced Portfolio and the Growth and Income Portfolio paid
to XXXXXX in 1997 were
    





                                       13
<PAGE>   58
   
0.XX% and 0. XX%, respectively. The transactions represented 0. XX% of the
Balanced Portfolio and 0. XX% of the Growth and Income Portfolio's total dollar
value of portfolio transactions for the fiscal year ended October 31, 1997.
During the fiscal year ended October 31, 1997, the International Equity
Portfolio paid $XXXX, $XXXX, $XXXX and $XXXX, to Fleming Martin, Jardine
Fleming, Ord Minnett and Robert Fleming & Co., respectively, affiliates of Rowe
Price-Fleming International, Inc., an adviser to the International Equity
Portfolio, and $XXXX to Morgan Stanley International, an affiliate of Morgan
Stanley Asset Management also an investment adviser to the International Equity
Portfolio. The percentage of total commissions paid to affiliated brokers of
the International Equity Portfolio in 1997 was X.XX%. The transactions
represented X,X% of the International Equity Portfolio's total dollar value of
portfolio transactions for the fiscal year ending October 31, 1997.

      In certain instances there may be securities that are suitable for the
Equity 500 Index Portfolio as well as for one or more of BT's other clients.
Investment decisions for the Equity 500 Index Portfolio and for BT's other
clients are made with a view to achieving their respective investment
objectives. It may develop that a particular security is bought or sold for
only one client even though it might be held by, or bought or sold for, other
clients. Likewise, a particular security may be bought for one or more clients
when one or more clients are selling that same security. Some simultaneous
transactions are inevitable when several clients receive investment advice from
the same investment adviser, particularly when the same security is suitable
for the investment objectives of more than one client. When two or more clients
are simultaneously engaged in the purchase or sale of the same security, the
securities are allocated among clients in a manner believed to be equitable to
each. It is recognized that in some cases this system could have a detrimental
effect on the price or volume of the security as far as the Equity 500 Index
Portfolio is concerned.  However, it is believed that the ability of the Equity
500 Index Portfolio to participate in volume transactions will produce better
executions for the Portfolio.
    


                                NET ASSET VALUE

   
      It is the policy of the Money Market Fund, the Municipal Money Market
Fund and the U.S. Government Money Market Fund (collectively the "Money Market
Funds") to attempt to maintain a constant price per share of $1.00. There can
be no assurance that a $1.00 net asset value per share will be maintained. The
portfolio instruments held by the Money Market Funds' corresponding Portfolios
are valued based on the amortized cost valuation technique pursuant to Rule
2a-7 under the 1940 Act. This involves valuing an instrument at its cost and
thereafter assuming a constant amortization to maturity of any discount or
premium, even though the portfolio security may increase or decrease in market
value. Such market fluctuations are generally in response to changes in
interest rates. Use of the amortized cost valuation method requires the Money
Market Funds' corresponding Portfolios to purchase instruments having remaining
maturities of 397 days or less, to maintain a dollar weighted average portfolio
maturity of 90 days or less, and to invest only in securities determined by the
Trustees to be of high quality with minimal credit risks. The corresponding
portfolios of the Money Market Funds may invest in issuers or instruments that
at the time of purchase have received the highest short-term rating by two
Rating Organizations, such as "D-1" by Duff & Phelps and "F-1" by Fitch IBCA,
Inc., and have received the next highest short-term rating by other Rating
Organizations, such as "A-2" by Standard & Poors and "P-2" by Moody's Investors
Service, Inc. See "Ratings of Municipal Obligations" and "Ratings of Short-Term
Obligations" for further information concerning ratings.
    

                                TAX INFORMATION

Taxation of the Funds

      To qualify as a regulated investment company ("RIC") under the Internal
Revenue Code of 1986, as amended ("Code"), each Fund (each of which is treated
as a separate corporation for these purposes) must, among other requirements:

         o       Derive at least 90% of its gross income each taxable year from
                 dividends, interest, payments with respect to securities loans
                 and gains from the sale or other disposition of securities or
                 (in the case of the International Equity Fund) foreign
                 currencies, or certain other income,





                                       14
<PAGE>   59
                 including (in the case of the International Equity Fund) gains
                 from futures or forward contracts ("Income Requirement");

         o       Diversify its investments in securities within certain
                 statutory limits; and
   
         o       Distribute annually to its shareholders at least 90% of its
                 investment company taxable income (generally, taxable net
                 investment income plus net short-term capital gain and, in the
                 case of the International Equity Fund, net gains from foreign
                 currency transactions) plus, in the case of the Municipal
                 Money Market Fund, net interest income excludable from gross
                 income under section 103(a) of the Code ("Distribution
                 Requirement").

         Each Fund has received either a ruling from the Internal Revenue
Service ("IRS"), or an opinion of counsel, that each Fund, as an investor in
its corresponding Portfolio, is or should be deemed to own a proportionate
share of the Portfolio's assets and to earn the income on that share for
purposes of determining whether the Fund satisfies all the income and
diversification requirements described above to qualify as a RIC.

         See the next section for a discussion of the tax consequences to the
Funds of certain investments by the Portfolios.

Taxation of the Portfolios

          Each Portfolio has received a ruling from the IRS or an opinion of
counsel to the effect that, among other things, each Portfolio is or should be
classified as a separate partnership for federal income tax purposes and is not
a "publicly traded partnership." As a result, each Portfolio is not or should
not be subject to federal income tax; instead, each investor in a Portfolio,
such as a Fund, is required to take into account in determining its federal
income tax liability its share of the Portfolio's income, gains, losses,
deductions, credits and tax preference items, without regard to whether it has
received any cash distributions from the Portfolio.

         Because, as noted above, each Fund is deemed to own a proportionate
share of its corresponding Portfolio's assets and to earn a proportionate share
of its corresponding Portfolio's income for purposes of
    





                                       15
<PAGE>   60
determining whether the Fund satisfies the requirements to qualify as a RIC,
each Portfolio intends to conduct its operations so that its corresponding Fund
will be able to satisfy all those requirements.

   
         Distributions to a Fund from its corresponding Portfolio (whether
pursuant to a partial or complete withdrawal or otherwise) will not result in
the Fund's recognition of any gain or loss for federal income tax purposes,
except that (1)gain will be recognized to the extent any cash that is
distributed exceeds the Fund's basis for its interest in the Portfolio before
the distribution, (2) income or gain will be recognized if the distribution is
in liquidation of the Fund's entire interest in the Portfolio and includes a
disproportionate share of any unrealized receivables held by the Portfolio, and
(3) loss will be recognized if a liquidation distribution consists solely of
cash and/or unrealized receivables. A Fund's basis for its interest in its
corresponding Portfolio generally will equal the amount of cash and the basis
of any property the Fund invests in the Portfolio, increased by the Fund's
share of the Portfolio's net income and gains and decreased by (a) the amount
of cash and the basis of any property the Portfolio distributes to the Fund and
(b) the Fund's share of the Portfolio's losses.
    

         A Portfolio may acquire zero coupon or other securities issued with
original issue discount. As an investor in a Portfolio that holds those
securities, a Fund would have to include in its income its share of the
original issue discount that accrues on the securities during the taxable year,
even if the Portfolio (and, hence, the Fund) receives no corresponding payment
on the securities during the year. Because each Fund annually must distribute
substantially all of its investment company taxable income, including any
original issue discount, to satisfy the Distribution Requirement and avoid
imposition of the 4% excise tax described in the Prospectus, a Fund may be
required in a particular year to distribute as a dividend an amount that is
greater than the total amount of cash it actually receives. Those distributions
would be made from a Fund's cash assets, if any, or the proceeds of redemption
of a portion of a Fund's interest in its corresponding Portfolio (which
redemption proceeds would be paid from the Portfolio's cash assets or the
proceeds of sales of portfolio securities, if necessary). A Portfolio might
realize capital gains or losses from any such sales, which would increase or
decrease its corresponding Fund's investment company taxable income and/or net
capital gain (the excess of net long-term capital gain over net short-term
capital loss

   
         If the Balanced, the Growth and Income or the International Equity
Portfolio acquires stock in a foreign corporation that is a "passive foreign
investment company" ("PFIC") and holds the stock beyond the end of the year of
acquisition, its corresponding Fund will be subject to federal income tax on
the Fund's share of a portion of any "excess distribution" received by the
Portfolio on the stock or of any gain realized by the Portfolio from
disposition of the stock (collectively, "PFIC income"), plus interest thereon,
even if the Fund distributes the PFIC income as a taxable dividend to its
shareholders. A Fund may avoid this tax and interest if its corresponding
Portfolio elects to treat the PFIC as a "qualified electing fund"; however, the
requirements for that election are difficult to satisfy.  These Portfolios
currently do not intend to acquire securities that are considered PFICs.

         Hedging strategies, such as entering into forward contracts and
selling and purchasing futures contracts, involve complex rules that will
determine for federal income tax purposes the amount, character and timing of
recognition of gains and losses the International Equity Portfolio and the
Equity 500 Index Portfolio realize in connection therewith. The International
Equity Fund's share of its Portfolio's (1) income from foreign currencies
(except certain gains that may be excluded by future regulations) and (2)
income from transactions in futures and forward contracts derived with respect
to its business of investing in securities or foreign currencies will qualify
as allowable income for that Fund under the Income Requirement. Similarly, the
S&P 500 Index Fund's share of the Equity 500 Index Portfolio's income from
options and futures derived with respect to its business of investing
securities will so qualify for that Fund.

         Dividends and interest received by the International Equity
Portfolio,and gains realized thereby, may be subject to income, withholding or
other taxes imposed by foreign countries and U.S. possessions that would reduce
the yield and/or total return on its securities. Tax treaties between certain
countries and the United States may reduce or eliminate these foreign taxes,
however, and many foreign countries do not impose taxes on capital gains on
investments by foreign investors.
    

Taxation of the Funds' Shareholders

   
         Distributions by the Municipal Money Market Fund of the amount by
which the Fund's share of its corresponding Portfolio's income on tax-exempt
securities exceeds certain amounts disallowed as deductions, designated by the
Fund as "exempt-interest dividends," generally may be excluded from gross
income by its shareholders. Dividends paid by the Municipal Money Market Fund
will qualify as exempt-interest dividends if, at the close of each quarter of
its taxable year, at least 50% of the value of its total assets (including its
share of the Municipal Money Market Portfolio's assets) consists of securities
the interest on which is excludable from gross income under section 103(a) of
the Code.  The Fund intends to continue to satisfy this requirement. The
aggregate dividends excludable from shareholders' gross income may not exceed
the Fund's net tax-exempt income. The shareholders' treatment of dividends from
the Fund under state and local income tax laws may differ from the treatment
thereof under the Code.
    

         Entities or persons who are "substantial users" (or persons related to
"substantial users") of facilities financed by private activity bonds ("PABs")
or industrial development bonds ("IDBs") should consult their tax advisers
before purchasing shares of the Municipal Money Market Fund because, for users
of certain of these facilities, the interest on those bonds is not exempt from
federal income tax. For these purposes, the term "substantial user" is defined
generally to include a "non-exempt person" who regularly uses in trade or
business a part of a facility financed from the proceeds of PABs or IDBs.

         Up to 85% of social security and railroad retirement benefits may be
included in taxable income for recipients whose adjusted gross income
(including income from tax-exempt sources such as the Municipal Money Market
Fund) plus 50% of their benefits exceeds certain base amounts. Exempt-interest
dividends from the Municipal Money Market Fund still are tax-exempt to the
extent described above; they are only included in the calculation of whether a
recipient's income exceeds the established amounts.

         If more than 50% of the value of the International Equity Fund's total
assets (including its share of the International Equity Portfolio's total
assets) at the close of its taxable year consists of securities of foreign
corporations, the Fund will be eligible to, and may, file an election with the
IRS that will enable the Fund's





                                       16
<PAGE>   61
   
shareholders, in effect, to receive the benefit of the foreign tax credit with
respect to the Fund's share of any foreign and U.S. possessions income taxes
paid by the Portfolio. If the Fund makes this election, the Fund will treat
those taxes as dividends paid to its shareholders and each shareholder will be
required to (1) include in gross income, and treat as paid by him, his
proportionate share of those taxes, (2) treat his share of those taxes and of
any dividend paid by the International Equity Fund that represents income from
foreign or U.S. possessions sources as his own income from those sources and
(3) either deduct the taxes deemed paid by him in computing his taxable income
or, alternatively, use the foregoing information in calculating the foreign tax
credit against his federal income tax. If the election is made, the Fund will
report to its shareholders shortly after each taxable year their respective
share of the Portfolio's income from foreign and U.S. possessions sources and
the taxes paid by the Portfolio to foreign countries and U.S.  possessions.
Pursuant to that election, individuals who have no more than $300 ($600 for
married persons filing jointly) of creditable foreign taxes included on Forms
1099 and all of whose foreign source income is "qualified passive income" may
elect each year to be exempt from the extremely complicated foreign tax credit
limitation and will be able to claim a foreign tax credit without having to
file the detailed Form 1116 that otherwise is required.
    

         The foregoing is only a summary of some of the important federal tax
considerations affecting the Funds and their shareholders and is not intended
as a substitute for careful tax planning. Accordingly, prospective investors
are advised to consult their own tax advisers for more detailed information
regarding the above and for information regarding federal, state, local and
foreign taxes.


                       YIELD AND TOTAL RETURN QUOTATIONS

   
      The Funds commenced operations on November 1, 1995, and thus have limited
past performance. For purposes of advertising performance, and in accordance
with Securities and Exchange Commission staff interpretations, for periods
prior to November 1, 1995, the Funds have adopted the performance of the
Mileage Class of the American AAdvantage Funds, an open-end management
investment company with ten series, nine of which each have an identical
investment objective to one of the Funds and its corresponding Portfolio. The
Manager and the investment advisers described in the Prospectus also provide
investment management services to the American AAdvantage Funds. Like the
Funds, each series of the American AAdvantage Funds invests all of its
investable assets in a corresponding Portfolio of the AMR Trust.  Performance
of the Funds will be different than that of the American AAdvantage Funds due
to the different expense structures between the Funds and the American
AAdvantage Funds.
    

      A quotation of yield on shares of the Money Market Funds may appear from
time to time in advertisements and in communications to shareholders and
others. Quotations of yields are indicative of yields for the limited
historical period used but not for the future. Yield will vary as interest
rates and other conditions change. Yield also depends on the quality, length of
maturity and type of instruments invested in by the Money Market Funds, and the
applicable Fund's operating expenses. A comparison of the quoted yields offered
for various investments is valid only if yields are calculated in the same
manner. In addition, other similar investment companies may have more or less
risk due to differences in the quality or maturity of securities held.

      The yields of the Money Market Funds may be calculated in one of two
ways:

   
      (1) Current Yield--the net average annualized return without compounding
      accrued interest income. For a 7-day current yield, this is computed by
      dividing the net change in value over a 7 calendar-day period of a
      hypothetical account having one share at the beginning of a 7
      calendar-day period by the value of the account at the beginning of this
      period to determine the "base period return." The quotient is multiplied
      by 365 divided by 7 and stated to two decimal places. A daily current
      yield is calculated by multiplying the net change in value over one day
      by 365 and stating it to two decimal places. Income other than investment
      income and capital changes, such as realized gains and losses from the
      sale of securities and unrealized appreciation and depreciation, are
      excluded in calculating the net change in value of an account. However,
      this calculation includes the aggregate fees and other expenses that are
      charged to all shareholder accounts in a Fund (or to a particular class
      of the Money Market Fund). In determining the net change in value of a
      hypothetical account, this value is adjusted to reflect the value of any
      additional shares purchased with dividends from the original share and
      dividends declared on both the original share and any such additional
      shares.
    





                                       17
<PAGE>   62
      (2) Effective Yield--the net average annualized return as computed by
      compounding accrued interest income. In determining the 7-day effective
      yield, a class of a Fund will compute the "base period return" in the
      same manner used to compute the "current yield" over a 7 calendar-day
      period as described above. One is then added to the base period return
      and the sum is raised to the 365/7 power. One is subtracted from the
      result, according to the following formula:

   
                                                        365/7
            effective yield = [ (base period return + 1)      ] - 1
    

      The current and effective yields for the Funds are as follows:

   
<TABLE>
<CAPTION>
                                                                       Current yield for the     Effective yield for the
           American AAdvantage               Current daily yield as    seven-day period ended     seven-day period ended
              Mileage Funds:                    of October 31,              October 31,                October 31, 
              --------------                    ---------------             ------------               ------------
                                                      1997                      1997                       1997
    <S>                                               <C>                       <C>                       <C>
    Money Market Fund                                 5.11%                     5.10%                     5.23%
    Municipal Money Market Fund                       3.19%                     3.19%                     3.24%
    U.S. Treasury Money Market Fund                   5.11%                     5.03%                     5.16%
</TABLE>
    

   
    The Municipal Money Market Fund also may advertise a tax-equivalent current
and effective yield. The tax-equivalent yields are calculated as follows:
    

      current yield/(1-applicable tax rate) = current tax-equivalent yield

    effective yield/(1-applicable tax rate) = effective tax-equivalent yield

   
      Based on these formulas, the current and effective tax-equivalent yields
for the Municipal Money Market Fund for the seven day period ending October 31,
1997 were 5.29% and 5.37%, respectively (based upon a 39.6% personal tax rate).
    

      The advertised yields for the Variable NAV Funds (as defined in the
prospectus) are computed by dividing the net investment income per share earned
during a 30-day (or one month) period less the aggregate fees that are charged
to all shareholder accounts of the Fund in proportion to the 30-day (or one
month) period and the weighted average size of an account in that Fund by the
maximum offering price per share of the Fund on the last day of the period,
according to the following formula:

   
                                                6
                           yield = 2{(a- b) +1)  -  1}
                                     ------
                                      cd
    

   
where, with respect to a particular Fund, "a" is the dividends and interest
earned during the period; "b" is the sum of the expenses accrued for the period
(net of reimbursement, if any) and the aggregate fees that are charged to all
shareholder accounts in proportion to the 30-day (or one month) period and the
weighted average size of an account in the Fund; "c" is the average daily
number of Fund shares outstanding during the period that were entitled to
receive dividends; and "d" is the maximum offering price per Fund share on the
last day of the period. Based on this formula, the estimated 30-day yield for
the period ended October 31, 1997 for the Short-Term Bond Fund was 5.13%.
    

   
      The Short-Term Bond Fund also may advertise a monthly distribution rate.
The distribution rate gives the return of the Fund based solely on the dividend
payout to that Fund if someone was entitled to the dividends for an entire
month.  A monthly distribution rate is calculated from the following formula:
    

                    monthly distribution rate = A/P*(365/n)





                                       18
<PAGE>   63
   
where, with respect to the Fund, "A" is the dividend accrual per share during
the month, "P" is the share price at the end of the month and "n" is the number
of days in the month. Based on this formula, the monthly distribution rate for
the Short-Term Bond Fund for the month of October 1997 was 6.11%. The "monthly
distribution rate" is a non-standardized performance calculation and when used
in an advertisement will be accompanied by the appropriate standardized SEC
calculations.
    

      The advertised total return for a Fund would be calculated by equating an
initial amount invested in a Fund to the ending redeemable value, according to
the following formula:

   
                                         (n)
                                 P(1 + T)   = ERV
    

where "P" is a hypothetical initial payment of $1,000; "T" is the average
annual total return for the Fund; "n" is the number of years involved; and
"ERV" is the ending redeemable value of a hypothetical $1,000 payment made in
the Fund at the beginning of the investment period covered.

      Based on this formula, annualized total returns were as follows for the
periods and the Funds indicated:

   
<TABLE>
<CAPTION>
                                                                                                                For the period
                                                                                                               from commencement
                                                                                                                   of active
                                                   For the one-year    For the five-year    For the ten-year       operations
                                                     period ended        period ended         period ended          through
                                                     October 31,          October 31,         October 31,         October 31,
                                                   ----------------    -----------------    ----------------   ----------------- 
                                                       1997(1)            1997(1)(2)            1997(1)            1997(1)(3)
    <S>                                                 <C>                 <C>                 <C>                  <C>
    Balanced Fund                                       19.52%              14.45%              12.88%               11.44%
    Growth and Income Fund                              27.60%              18.78%              16.10%               13.54%
    International Equity Fund                           18.44%              17.70%              N/A(2)               11.87%
     S&P500 Index Fund                                  N/A(2)              N/A(2)              N/A(2)               N/A(2)
    Intermediate Bond Fund                              N/A(2)              N/A(2)              N/A(2)               N/A(2)
    Short-Term Bond Fund                                 5.90%               5.15%              N/A(2)               6.78%
    Money Market Fund-Mileage Class                      5.14%               4.49%               5.91%               5.93%
    Municipal Money Market Fund                          3.18%              N/A(2)              N/A(2)               2.99%
    U.S. Government Money Market Fund                    5.00%               4.35%              N/A(2)               4.27%
</TABLE>
    

   
(1)   The Institutional Class is the initial class for each American AAdvantage
Fund except the S&P 500 Index Fund.  Except for the S&P 500 Index Fund,
performance represents the total returns achieved by the Institutional Class of
the American AAdvantage Funds from the inception date of each Fund up to the
inception date of the Mileage Class of each American AAdvantage Fund, returns
of the Mileage Class of each American AAdvantage Fund since the inception of
the Class and returns of the Funds since their November 1, 1995 inception.
Expenses of the Funds are different from those of the Mileage and Institutional
Classes of each American AAdvantage Fund and therefore total returns for the
Funds would vary from the returns shown had they been in operation since
inception of the American AAdvantage Funds. See Appendix A for historical
performance of the S&P 500 Composite Price Index. A portion of the fees of the
Balanced, the Growth
    





                                       19
<PAGE>   64
   
and Income, the International Equity, the Short-Term Income, the Money Market,
the Municipal Money Market and the U.S. Government Money Market Funds has been
waived since their 11/1/95 inception.

(2)   The Fund was not operational during this period.

(3)   The Inception dates are as follows:
    

   
<TABLE>
<CAPTION>
                                                  American AAdvantage Funds                 American AAdvantage Mileage Funds
                                         Institutional Class        Mileage Class
      <S>                                      <C>                    <C>                                 <C>
                Balanced                       7/17/87                 8/1/94                             11/1/95
            Growth and Income                  7/17/87                 8/1/94                             11/1/95
          International Equity                  8/7/91                 8/1/94                             11/1/95
             Short-Term Bond                   12/3/87                 8/1/94                             11/1/95
              Money Market                      9/1/87                 11/1/91                            11/1/95
         Municipal Money Market                11/10/93               11/10/93                            11/1/95
      U.S. Government Money Market              3/2/92                 11/1/93                            11/1/95
</TABLE>
    


      Each class of a Fund also may use "aggregate" total return figures for
various periods which represent the cumulative change in value of an investment
in a Fund for the specific period. Such total returns reflect changes in share
prices of a class of a Fund and assume reinvestment of dividends and
distributions.

      Each Fund may give total returns from inception using the date when the
current managers began active management as the inception date. However,
returns using the actual inception date of the Fund will also be provided.

   
      In reports or other communications to shareholders or in advertising
material, each Fund may from time to time compare its performance with that of
other mutual funds in rankings prepared by Lipper Analytical Services, Inc.,
Morningstar, Inc., IBC Financial Data, Inc. and other similar independent
services which monitor the performance of mutual funds or publications such as
the "New York Times", "Barrons" and the "Wall Street Journal." Each Fund also
may compare its performance with various indices prepared by independent
services such as Standard & Poor's, Morgan Stanley or Lehman Brothers or to
unmanaged indices that may assume reinvestment of dividends but generally do
not reflect deductions for administrative and management costs.

      Each Fund may advertise the standard deviation of its returns for various
time periods and compare its standard deviation to that of various indices.
Standard deviation of returns over time is a measure of volatility. It
indicates the spread of returns about their central tendency or mean. In
theory, a Fund that is more volatile should receive a higher return in exchange
for taking extra risk. Standard deviation is a well-accepted statistic to gauge
the riskiness of an investment strategy and measure its historical volatility
as a predictor of risk, although the measure is subject to time selection bias.

      Advertisements for the Funds may mention that the Funds offer a variety
of investment options. They also may compare the Funds to federally insured
investments, such as bank certificates of deposit and credit union deposits,
including the long-term effects of inflation on these types of investments.
Advertisements also may compare the historical rate of return of different
types of investments. Information concerning broker-dealers who sell the Funds
also may appear in advertisements for the Funds, including their ranking as
established by various publications compared to other broker-dealers.
    

      From time to time, the Manager may use contests as a means of promoting
the American AAdvantage Mileage Funds.  Prizes may include free air travel
and/or hotel accommodations. Listing for certain of the Funds may be found in
newspapers under the heading "Amer AAdvant."





                                       20
<PAGE>   65

                        DESCRIPTION OF THE MILEAGE TRUST

      The Mileage Trust, organized on February 22, 1995, (originally named
American AAdvantage Funds II) is an entity of the type commonly known as a
"Massachusetts business trust." Under Massachusetts law, shareholders of such a
trust may, under certain circumstances, be held personally liable for its
obligations. However, the Mileage Trust's Declaration of Trust contains an
express disclaimer of shareholder liability for acts or obligations of the
Mileage Trust and provides for indemnification and reimbursement of expenses
out of Mileage Trust property for any shareholder held personally liable for
the obligations of the Mileage Trust. The Declaration of Trust also provides
that the Mileage Trust may maintain appropriate insurance (for example,
fidelity bonding) for the protection of the Mileage Trust, its shareholders,
Trustees, officers, employees and agents to cover possible tort and other
liabilities. Thus, the risk of a shareholder incurring financial loss due to
shareholder liability is limited to circumstances in which both inadequate
insurance existed and the Mileage Trust itself was unable to meet its
obligations. The Mileage Trust has not engaged in any other business.

   
      The corresponding Portfolios of the Balanced, the Growth and Income, the
International Equity and the Intermediate Bond Funds utilize a multi-manager
approach designed to reduce volatility by diversifying assets over multiple
investment management firms. Each adviser is carefully chosen by the Manager
through a rigorous screening process.
    


                      CONTROL PERSONS AND 5% SHAREHOLDERS

   
      The following persons may be deemed to control certain Funds by virtue of
their ownership of more than 25% of the outstanding shares of a Fund as of
January 31, 1998 The effect of their control is:

American AAdvantage Short-Term Bond Mileage Fund
    
                                                                               %


      In addition, the following persons own 5% or more of the outstanding
shares of a Fund or Class as of January 31, 1996:

American AAdvantage Balanced Mileage Fund
                                                                               %


American AAdvantage International Equity Mileage Fund


   
American AAdvantage Short-Term Bond Mileage Fund
    


                                                                               %


American AAdvantage Municipal Money Market Mileage Fund
                                                                               %


                                                                               %


                                                                               %


American AAdvantage U.S. Government Money Market Mileage Fund
                                                                               %


                                                                               %

                                                                               %





                                       21
<PAGE>   66

                               OTHER INFORMATION

   
      American Depository Receipts (ADRs), European Depository Receipts
(EDRs)-ADRs are depository receipts for foreign issuers in registered form
traded in U.S. securities markets, whereas, EDRs are in bearer form and traded
in European securities markets. These securities are not denominated in the
same currency as the securities into which they may be converted. Investing in
ADRs and EDRs involves greater risks than are normally present in domestic
investments. There is generally less publicly available information about
foreign companies and there may be less governmental regulation and supervision
of foreign stock exchanges, brokers and listed companies. In addition, such
companies may use different accounting and financial standards (and certain
currencies may become unavailable for transfer from a foreign currency),
resulting in a Fund's possible inability to convert immediately into U.S.
currency proceeds realized upon the sale of portfolio securities of the
affected foreign companies.
    

      Bank Deposit Notes-Bank deposit notes are obligations of a bank, rather
than bank holding company corporate debt.  The only structural difference
between bank deposit notes and certificates of deposit is that interest on bank
deposit notes is calculated on a 30/360 basis as are corporate notes/bonds.
Similar to certificates of deposit, deposit notes represent bank level
investments and, therefore, are senior to all holding company corporate debt.

      Bankers' Acceptances-Bankers' acceptances are short-term credit
instruments designed to enable businesses to obtain funds to finance commercial
transactions. Generally, an acceptance is a time draft drawn on a bank by an
exporter or an importer to obtain a stated amount of funds to pay for specific
merchandise. The draft is then "accepted" by a bank that, in effect,
unconditionally guarantees to pay the face value of the instrument on its
maturity date. The acceptance may then be held by the accepting bank as an
earning asset or it may be sold in the secondary market at the going rate of
discount for a specific maturity. Although maturities for acceptances can be as
long as 270 days, most acceptances have maturities of six months or less.

      Cash Equivalents-Cash equivalents include certificates of deposit, bearer
deposit notes, bankers' acceptances, government obligations, commercial paper,
short-term corporate debt securities and repurchase agreements.

      Certificates of Deposit-Certificates of deposit are issued against funds
deposited in an eligible bank (including its domestic and foreign branches,
subsidiaries and agencies), are for a definite period of time, earn a specified
rate of return and are normally negotiable.

   
      Cover-Transactions using forward contracts, future contracts, options on
futures contracts and options on indices ("Financial Instruments"), other than
purchased options, expose a Portfolio to an obligation to another party. A
Portfolio will not enter into any such transactions unless it owns either (1)
an offsetting ("covered") position in securities, currencies, or other forward
contracts, options or futures contracts, or (2) cash, receivables and liquid
assets, with a value, marked-to-market daily, sufficient to cover its potential
obligations to the extent not covered as provided in (1) above. Each Portfolio
will comply with SEC guidelines regarding cover for these instruments and will,
if the guidelines so require, set aside cash, receivables, or liquid assets in
a segregated account with its custodian in the prescribed amount.

      Assets used as cover or held in a segregated account cannot be sold while
the position in the corresponding Financial Instrument is open, unless they are
replaced with other appropriate assets. As a result, the commitment of a large
portion of a Portfolio's assets to cover or to segregated accounts could impede
portfolio management or the Portfolio's ability to meet redemption requests or
other current obligations.
    

      Commercial Paper-Commercial paper refers to promissory notes representing
an unsecured debt of a corporation or finance company with a fixed maturity of
no more than 270 days. A variable amount master demand note (which is a type of
commercial paper) represents a direct borrowing arrangement involving
periodically fluctuating rates of interest under a letter agreement between a
commercial paper issuer and an institutional lender pursuant to which the
lender may determine to invest varying amounts.





                                       22
<PAGE>   67
      Debentures-Debentures are unsecured debt securities. The holder of a
debenture is protected only by the general creditworthiness of the issuer.

      Derivatives-Generally, a derivative is a financial arrangement, the value
of which is based on, or "derived" from, a traditional security, asset or
market index. Some "derivatives" such as mortgage-related and other
asset-backed securities are in many respects like any other investment,
although they may be more volatile or less liquid than more traditional debt
securities. There are, in fact, many different types of derivatives and many
different ways to use them. There are a range of risks associated with those
uses.

      Forward Foreign Currency Exchange Contracts-A forward foreign currency
exchange contract ("forward contract") is a contract to purchase or sell a
currency at a future date. The two parties to the contract set the number of
days and the price. Forward contracts are used as a hedge against movements in
future foreign exchange rates. The corresponding Portfolio of the International
Equity Fund may enter into forward contracts to purchase or sell foreign
currencies for a fixed amount of U.S. dollars or other foreign currency.

   
      Forward contracts may serve as long hedges -- for example, the Portfolio
may purchase a forward contract to lock in the U.S. dollar price of a security
denominated in a foreign currency that the Portfolio intends to acquire.
Forward contracts also may serve as short hedges -- for example, the Portfolio
may sell a forward contract to lock in the U.S.  dollar equivalent of the
proceeds from the anticipated sale of a security denominated in a foreign
currency or from the anticipated dividend or interest payments denominated in a
foreign currency. The Manager may seek to hedge against changes in the value of
a particular currency by using forward contracts on another foreign currency or
basket of currencies, the value of which the Manager believes will bear a
positive correlation to the value of the currency being hedged.
    

      The cost to the Portfolio of engaging in forward contracts varies with
factors such as the currency involved, the length of the contract period and
the market conditions then prevailing. Because forward contracts are usually
entered into on a principal basis, no fees or commissions are involved. When
the Portfolio enters into a forward contract, it relies on the contra party to
make or take delivery of the underlying currency at the maturity of the
contract. Failure by the contra party to do so would result in the loss of any
expected benefit of the transaction.

      Buyers and sellers of forward contracts can enter into offsetting closing
transactions by selling or purchasing, respectively, an instrument identical to
the instrument purchased or sold. Secondary markets generally do not exist for
forward contracts, with the result that closing transactions generally can be
made for forward contracts only by negotiating directly with the contra party.
Thus, there can be no assurance that the Portfolio will in fact be able to
close out a forward contract at a favorable price prior to maturity. In
addition, in the event of insolvency of the contra party, the Portfolio might
be unable to close out a forward contract at any time prior to maturity. In
either event, the Portfolio would continue to be subject to market risk with
respect to the position, and would continue to be required to maintain a
position in the securities or currencies that are the subject of the hedge or
to maintain cash or securities in a segregated account.

      The precise matching of forward currency contract amounts and the value
of the securities involved generally will not be possible because the value of
such securities, measured in the foreign currency, will change after the
forward contract has been established. Thus, the Portfolio might need to
purchase or sell foreign currencies in the spot (cash) market to the extent
such foreign currencies are not covered by forward contracts. The projection of
short-term currency market movements is extremely difficult, and the successful
execution of a short-term hedging strategy is highly uncertain.

      Full Faith and Credit Obligations of the U.S. Government-Securities
issued or guaranteed by the U.S. Treasury, backed by the full taxing power of
the U.S. Government or the right of the issuer to borrow from the U.S.
Treasury.

      Futures Contracts-Futures contracts obligate a purchaser to take delivery
of a specific amount of an obligation underlying the futures contract at a
specified time in the future for a specified price. Likewise, the seller incurs
an obligation to deliver the specified amount of the underlying obligation
against receipt of the specified price. Futures are traded on both U.S. and
foreign commodities exchanges. Only currency futures will be permitted in the
corresponding Portfolio of the International Equity Fund. Futures contracts
will be traded for the same purposes as entering into forward contracts





                                       23
<PAGE>   68
      The purchase of futures can serve as a long hedge, and the sale of
futures can serve as a short hedge.

      No price is paid upon entering into a futures contract. Instead, at the
inception of a futures contract a Portfolio is required to deposit "initial
deposit" consisting of cash or U.S. Government Securities in an amount
generally equal to 10% or less of the contract value. Margin must also be
deposited when writing a call or put option on a futures contract, in
accordance with applicable exchange rules. Unlike margin in securities
transactions, initial margin on futures contracts does not represent a
borrowing, but rather is in the nature of a performance bond or good- faith
deposit that is returned to the Portfolio at the termination of the transaction
if all contractual obligations have been satisfied. Under certain
circumstances, such as periods of high volatility, a Portfolio may be required
by a futures exchange to increase the level of its initial margin payment, and
initial margin requirements might be increased generally in the future by
regulatory action.

      Subsequent "variation margin" payments are made to and from the futures
broker daily as the value of the futures position varies, a process known as
"marking-to-market." Variation margin does not involve borrowing, but rather
represents a daily settlement of a Portfolio's obligations to or from a futures
broker. When the Portfolio purchases or sells a futures contract, it is subject
to daily variation margin calls that could be substantial in the event of
adverse price movements. If a Portfolio has insufficient cash to meet daily
variation margin requirements, it might need to sell securities at a time when
such sales are disadvantageous.

      Purchasers and sellers of futures contracts can enter into offsetting
closing transactions, by selling or purchasing, respectively, an instrument
identical to the instrument purchased or sold. Positions in futures contracts
may be closed only on a futures exchange or board of trade that provides a
secondary market. The Portfolios intend to enter into futures contracts only on
exchanges or boards of trade where there appears to be a liquid secondary
market.  However, there can be no assurance that such a market will exist for a
particular contract at a particular time. In such event, it may not be possible
to close a futures contract.

      Although futures contracts by their terms call for the actual delivery or
acquisition of securities or currency, in most cases the contractual obligation
is fulfilled before the date of the contract without having to make or take
delivery of the securities or currency. The offsetting of a contractual
obligation is accomplished by buying (or selling, as appropriate) on a
commodities exchange an identical futures contract calling for delivery in the
same month.  Such a transaction, which is effected through a member of an
exchange, cancels the obligation to make or take delivery of the securities or
currency. Since all transactions in the futures market are made, offset or
fulfilled through a clearinghouse associated with the exchange on which the
contracts are traded, a Portfolio will incur brokerage fees when it purchases
or sells futures contracts.

      Under certain circumstances, futures exchanges may establish daily limits
on the amount that the price of a futures contract can vary from the previous
day's settlement price; once that limit is reached, no trades may be made that
day at a price beyond the limit. Daily price limits do not limit potential
losses because prices could move to the daily limit for several consecutive
days with little or no trading, thereby preventing liquidation of unfavorable
positions.

      If a Portfolio were unable to liquidate a futures contract due to the
absence of a liquid secondary market or the imposition of price limits, it
could incur substantial losses. The Portfolio would continue to be subject to
market risk with respect to the position. In addition, the Portfolio would
continue to be required to make daily variation margin payments and might be
required to maintain the position being hedged by the futures contract or
option thereon or to maintain cash or securities in a segregated account.

      To the extent that a Portfolio enters into futures contracts, in each
case other than for bona fide hedging purposes (as defined by the Commodities
Futures Trading Commission ("CFTC"), the aggregate initial margin will not
exceed 5% of the liquidation value of a Portfolio's portfolio, after taking
into account unrealized profits and unrealized losses on any contracts that the
Portfolio has entered into. This policy does not limit to 5% the percentage of
the Portfolio's assets that are at risk in futures contracts.

      Futures contracts require the deposit of initial margin valued at a
certain percentage of the contract and possibly adding "variation margin"
should the price of the contract move in an unfavorable direction. As with
forward contracts, the segregated assets must be either cash or high grade
liquid debt securities.

      The ordinary spreads between prices in the cash and futures market, due
to differences in the nature of those markets, are subject to distortions.
First, all participants in the futures market are subject to initial deposit





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<PAGE>   69
and variation margin requirements. Rather than meeting additional variation
margin deposit requirements, investors may close futures contracts through
offsetting transactions which could distort the normal relationship between the
cash and futures markets. Second, the liquidity of the futures market depends
on participants entering into offsetting transactions rather than making or
taking delivery. To the extent participants decide to make or take delivery,
liquidity in the futures market could be reduced, thus producing distortion.
Third, from the point of view of speculators, the margin deposit requirements
in the futures market are less onerous than margin requirements in the
securities market. Therefore, increased participation by speculators in the
futures market may cause temporary price distortions. Due to the possibility of
distortion, a correct forecast of securities price or currency exchange rate
trends by the investment adviser may still not result in a successful
transaction.

      In addition, futures contracts entail risks. Although an investment
adviser believes that use of such contracts will benefit a particular
Portfolio, if that investment adviser's investment judgment about the general
direction of, for example, an index is incorrect, a Portfolio's overall
performance would be poorer than if it had not entered into any such contract.

      General Obligation Bonds-General obligation bonds are secured by the
pledge of the issuer's full faith, credit, and usually, taxing power. The
taxing power may be an unlimited ad valorem tax or a limited tax, usually on
real estate and personal property. Most states do not tax real estate, but
leave that power to local units of government.

   
      Illiquid Securities - Historically, illiquid securities have included
securities subject to contractual or legal restrictions on resale because they
have not been registered under the 1933 Act, securities that are otherwise not
readily marketable and repurchase agreements having a remaining maturity of
longer than seven calendar days. Securities that have not been registered under
the 1933 Act are referred to as private placements or restricted securities and
are purchased directly from the issuer or in the secondary market. Mutual funds
do not typically hold a significant amount of these restricted or other
illiquid securities because of the potential for delays on resale and
uncertainty in valuation. Limitations on resale may have an adverse effect on
the marketability of portfolio securities and a mutual fund might be unable to
dispose of restricted or other illiquid securities promptly or at reasonable
prices and might thereby experience difficulty satisfying redemptions within
seven calendar days. A mutual fund also might have to register such restricted
securities in order to dispose of them resulting in additional expense and
delay. Adverse market conditions could impede such a public offering of
securities.

      In recent years, however, a large institutional market has developed for
certain securities that are not registered under the 1933 Act, including
repurchase agreements, commercial paper, foreign securities, municipal
securities and corporate bonds and notes. Institutional investors depend on an
efficient institutional market in which the unregistered security can be
readily resold or on an issuer's ability to honor a demand for repayment.
However, the fact that there are contractual or legal restrictions on resale of
such investments to the general public or to certain institutions may not be
indicative of their liquidity.

      Index Futures Contracts and Options on Index Futures Contracts-The Equity
500 Index Portfolio may invest in index futures contracts, options on index
futures contracts and options on securities indices.

           Index Futures Contracts-U.S. futures contracts have been designed by
exchanges which have been designated "contracts markets" by the CFTC and must
be executed through a futures commission merchant, or brokerage firm, which is
a member of the relevant contract market. Futures contracts trade on a number
of exchange markets, and through their clearing corporations.

           At the same time a futures contract on the Standard & Poor's 500
Composite Stock Price Index (the "S&P 500" or the "Index") is purchased or
sold, the Portfolio must allocate cash or securities as a deposit payment
("initial deposit"). It is expected that the initial deposit would be
approximately 1-1/2% to 5% of a contract's face value. Daily thereafter, the
futures contract is valued and the payment of "variation margin" may be
required.
    





                                       25
<PAGE>   70

   
           Options on Index Futures Contracts-The purchase of a call option on
an index futures contract is similar in some respects to the purchase of a call
option on such an index.

           The writing of a call option on a futures contract with respect to
the Index constitutes a partial hedge against declining prices of the
underlying securities that are deliverable upon exercise of the futures
contract. If the futures price at expiration of the option is below the
exercise price, the Portfolio will retain the full amount of the option premium
which provides a partial hedge against any decline that may have occurred in
the Portfolio's holdings.  The writing of a put option on an index futures
contract constitutes a partial hedge against increasing prices of the
underlying securities that are deliverable upon exercise of the futures
contract. If the futures price at expiration of the option is higher than the
exercise price, the Portfolio will retain the full amount of the option premium
which provides a partial hedge against any increase in the price of securities
that the Portfolio intends to purchase. If a put or call option the Portfolio
has written is exercised, the Portfolio will incur a loss that will be reduced
by the amount of the premium it receives. Depending on the degree of
correlation between changes in the value of its portfolio securities and
changes in the value of its futures positions, the Portfolio's losses from
existing options on futures may to some extent be reduced or increased by
changes in the value of portfolio securities.

           The purchase of a put option on a futures contract with respect to
the Index is similar in some respects to the purchase of protective put options
on the Index. For example, the Portfolio may purchase a put option on an index
futures contract to hedge against the risk of lowering securities values.

           The amount of risk the Portfolio assumes when it purchases an option
on a futures contract with respect to the Index is the premium paid for the
option plus related transaction costs. In addition to the correlation risks
discussed above, the purchase of such an option also entails the risk that
changes in the value of the underlying futures contract will not be fully
reflected in the value of the option purchased.

           The Equity 500 Index Portfolio Board has adopted the requirement
that index futures contracts and options on index futures contracts be used as
a hedge. Stock index futures may be used on a continual basis to equitize cash
so that the Portfolio may maintain maximum equity exposure. The Portfolio will
not enter into any futures contracts or options on futures contracts if
immediately thereafter the amount of margin deposits on all the futures
contracts of the Portfolio and premiums paid on outstanding options on futures
contracts owned by the Portfolio would exceed 5% of the market value of the
total assets of the Portfolio.

           Futures Contracts on Stock Indices-The Portfolio may enter into
contracts providing for the making and acceptance of a cash settlement based
upon changes in the value of an index of securities ("Futures Contracts"). This
investment technique is designed only to hedge against anticipated future
change in general market prices which otherwise might either adversely affect
the value of securities held by the Portfolio or adversely affect the prices of
securities which are intended to be purchased at a later date for the
Portfolio.

           In general, each transaction in Futures Contracts involves the
establishment of a position which will move in a direction opposite to that of
the investment being hedged. If these hedging transactions are successful, the
futures positions taken for the Portfolio will rise in value by an amount that
approximately offsets the decline in value of the portion of the Portfolio's
investments that are being hedged. Should general market prices move in an
unexpected manner, the full anticipated benefits of Futures Contracts may not
be achieved or a loss may be realized.

           Although Futures Contracts would be entered into for cash management
purposes only, such transactions do involve certain risks. These risks could
include a lack of correlation between the Futures Contract and the equity
market, a potential lack of liquidity in the secondary market and incorrect
assessments of market trends which may result in worse overall performance than
if a Futures Contract had not been entered into.
    





                                       26
<PAGE>   71

   
           Brokerage costs will be incurred and "margin" will be required to be
posted and maintained as a good-faith deposit against performance of
obligations under Futures Contracts written into by the Portfolio. The
Portfolio may not purchase or sell a Futures Contract (or options thereon) if
immediately thereafter its margin deposits on its outstanding Futures Contracts
(and its premium paid on outstanding options thereon) would exceed 5% of the
market value of the Portfolio's total assets.

           Options on Securities Indices-The Portfolio may write (sell) covered
call and put options to a limited extent on the Index ("covered options") in an
attempt to increase income. Such options give the holder the right to receive a
cash settlement during the term of the option based upon the difference between
the exercise price and the value of the Index. The Portfolio may forgo the
benefits of appreciation on the Index or may pay more than the market price or
the Index pursuant to call and put options written by the Portfolio.

           By writing a covered call option, the Portfolio forgoes, in exchange
for the premium less the commission ("net premium"), the opportunity to profit
during the option period from an increase in the market value of the Index
above the exercise price. By writing a covered put option, the Portfolio, in
exchange for the net premium received, accepts the risk of a decline in the
market value of the Index below the exercise price.

           The Portfolio may terminate its obligation as the writer of a call
or put option by purchasing an option with the same exercise price and
expiration date as the option previously written.

           When the Portfolio writes an option, an amount equal to the net
premium received by the Portfolio is included in the liability section of the
Portfolio's Statement of Assets and Liabilities as a deferred credit. The
amount of the deferred credit will be subsequently marked to market to reflect
the current market value of the option written. The current market value of a
traded option is the last sale price or, in the absence of a sale, the mean
between the closing bid and asked price. If an option expires on its stipulated
expiration date or if the Portfolio enters into a closing purchase transaction,
the Portfolio will realize a gain (or loss if the cost of a closing purchase
transaction exceeds the premium received when the option was sold), and the
deferred credit related to such option will be eliminated.

           The Portfolio has adopted certain other nonfundamental policies
concerning index option transactions that are discussed above. The Portfolio's
activities in index options also may be restricted by the requirements of the
Code, for qualification as a RIC.

           The hours of trading for options on the Index may not conform to the
hours during which the underlying securities are traded. To the extent that the
option markets close before the markets for the underlying securities,
significant price and rate movements can take place in the underlying
securities markets that cannot be reflected in the option markets. It is
impossible to predict the volume of trading that may exist in such options, and
there can be no assurance that viable exchange markets will develop or
continue.

           Because options on securities indices require settlement in cash, BT
may be forced to liquidate portfolio securities to meet settlement obligations.

           Options on Stock Indices-The Portfolio may purchase and write put
and call options on stock indices listed on stock exchanges. A stock index
fluctuates with changes in the market values of the stocks included in the
index. Options on stock indices generally are similar to options on stock
except that the delivery requirements are different. Instead of giving the
right to take or make delivery of stock at a specified price, an option on a
stock index gives the holder the right to receive a cash "exercise settlement
amount" equal to (a) the amount, if any, by which the fixed exercise price of
the option exceeds (in the case of a put) or is less than (in the case of a
call) the closing value of the underlying index on the date of exercise,
multiplied by (b) a fixed "index multiplier." The writer of the option is
obligated, in return for the premium received, to make delivery of this amount.
The writer may offset its position in stock index options prior to expiration
by entering into a closing transaction on an exchange or the option may expire
unexercised.
    





                                       27
<PAGE>   72

   
           Because the value of an index option depends upon movements in the
level of the index rather than the price of a particular stock, whether the
Portfolio will realize a gain or loss from the purchase or writing of options
on an index depends upon movements in the level of stock prices in the stock
market generally or, in the case of certain indices, in an industry or market
segment, rather than movements in the price of a particular stock.

      Loan Participation Interests-Loan participation interests represent
interests in bank loans made to corporations.  The contractual arrangement with
the bank transfers the cash stream of the underlying bank loan to the
participating investor. Because the issuing bank does not guarantee the
participations, they are subject to the credit risks generally associated with
the underlying corporate borrower. In addition, because it may be necessary
under the terms of the loan participation for the investor to assert through
the issuing bank such rights as may exist against the underlying corporate
borrower, in the event the underlying corporate borrower fails to pay principal
and interest when due, the investor may be subject to delays, expenses and
risks that are greater than those that would have been involved if the investor
had purchased a direct obligation (such as commercial paper) of such borrower.
Moreover, under the terms of the loan participation, the investor may be
regarded as a creditor of the issuing bank (rather than of the underlying
corporate borrower), so that the issuer also may be subject to the risk that
the issuing bank may become insolvent.  Further, in the event of the bankruptcy
or insolvency of the corporate borrower, the loan participation may be subject
to certain defenses that can be asserted by such borrower as a result of
improper conduct by the issuing bank. The secondary market, if any, for these
loan participations is extremely limited and any such participations purchased
by the investor are regarded as illiquid.
    

      Loan Transactions-Loan transactions involve the lending of securities to
a broker-dealer or institutional investor for its use in connection with short
sales, arbitrages or other security transactions. The purpose of a qualified
loan transaction is to afford a lender the opportunity to continue to earn
income on the securities loaned and at the same time earn fee income or income
on the collateral held by it.

      Securities loans will be made in accordance with the following
conditions: (1) the Portfolio must receive at least 100% collateral in the form
of cash or cash equivalents, securities of the U.S. Government and its agencies
and instrumentalities, and approved bank letters of credit; (2) the borrower
must increase the collateral whenever the market value of the loaned securities
(determined on a daily basis) rises above the level of collateral; (3) the
Portfolio must be able to terminate the loan after notice, at any time; (4) the
Portfolio must receive reasonable interest on the loan or a flat fee from the
borrower, as well as amounts equivalent to any dividends, interest or other
distributions on the securities loaned, and any increase in market value of the
loaned securities; (5) the Portfolio may pay only reasonable custodian fees in
connection with the loan; and (6) voting rights on the securities loaned may
pass to the borrower, provided, however, that if a material event affecting the
investment occurs, the AMR Trust Board or the Equity 500 Index Portfolio Board,
as appropriate, must be able to terminate the loan and vote proxies or enter
into an alternative arrangement with the borrower to enable the AMR Trust Board
or the Equity 500 Index Portfolio Board, as appropriate, to vote proxies.

      While there may be delays in recovery of loaned securities or even a loss
of rights in collateral supplied should the borrower fail financially, loans
will be made only to firms deemed by the AMR Trust Board or the Equity 500
Index Portfolio Board, as appropriate, to be of good financial standing and
will not be made unless the consideration to be earned from such loans would
justify the risk. Such loan transactions are referred to in this Statement of
Additional Information as "qualified" loan transactions.

      The cash collateral so acquired through qualified loan transactions may
be invested only in those categories of high quality liquid securities
previously authorized by the AMR Trust Board.

      Mortgage-Backed Securities-Mortgage-backed securities consist of both
collateralized mortgage obligations and mortgage pass-through certificates.

           Collateralized Mortgage Obligations ("CMOs")-CMOs and interests in
real estate mortgage investment conduits ("REMICs") are debt securities
collateralized by mortgages, or mortgage pass-through securities. CMOs divide
the cash flow generated from the underlying mortgages or mortgage pass-through
securities into different groups referred to as "tranches," which are then
retired sequentially over time in order of priority. The principal governmental
issuers of such securities are the Federal National Mortgage Association
("FNMA"), a government sponsored corporation owned entirely by private
stockholders and the Federal Home Loan Mortgage Corporation ("FHLMC"), a
corporate instrumentality of the United States created pursuant to an act of
Congress





                                       28
<PAGE>   73
which is owned entirely by Federal Home Loan Banks. The issuers of CMOs are
structured as trusts or corporations established for the purpose of issuing
such CMOs and often have no assets other than those underlying the securities
and any credit support provided. A REMIC is a mortgage securities vehicle that
holds residential or commercial mortgages and issues securities representing
interests in those mortgages. A REMIC may be formed as a corporation,
partnership, or segregated pool of assets. The REMIC itself is generally exempt
from federal income tax, but the income from the mortgages is reported by
investors. For investment purposes, interests in REMIC securities are virtually
indistinguishable from CMOs.

           Mortgage Pass-Through Certificates-Mortgage pass-through
certificates are issued by governmental, government- related and private
organizations which are backed by pools of mortgage loans.

      (1) Government National Mortgage Association ("GNMA") Mortgage
Pass-Through Certificates ("Ginnie Maes")-GNMA is a wholly-owned U.S.
Government corporation within the Department of Housing and Urban Development.
Ginnie Maes represent an undivided interest in a pool of mortgages that are
insured by the Federal Housing Administration or the Farmers Home
Administration or guaranteed by the Veterans Administration. Ginnie Maes
entitle the holder to receive all payments (including prepayments) of principal
and interest owed by the individual mortgagors, net of fees paid to GNMA and to
the issuer which assembles the mortgage pool and passes through the monthly
mortgage payments to the certificate holders (typically, a mortgage banking
firm), regardless of whether the individual mortgagor actually makes the
payment. Because payments are made to certificate holders regardless of whether
payments are actually received on the underlying mortgages, Ginnie Maes are of
the "modified pass-through" mortgage certificate type. The GNMA is authorized
to guarantee the timely payment of principal and interest on the Ginnie Maes.
The GNMA guarantee is backed by the full faith and credit of the United States,
and the GNMA has unlimited authority to borrow funds from the U.S. Treasury to
make payments under the guarantee. The market for Ginnie Maes is highly liquid
because of the size of the market and the active participation in the secondary
market of security dealers and a variety of investors.

      (2) FHLMC Mortgage Participation Certificates ("Freddie Macs")-Freddie
Macs represent interests in groups of specified first lien residential
conventional mortgages underwritten and owned by the FHLMC. Freddie Macs
entitle the holder to timely payment of interest, which is guaranteed by the
FHLMC. The FHLMC guarantees either ultimate collection or timely payment of all
principal payments on the underlying mortgage loans. In cases where the FHLMC
has not guaranteed timely payment of principal, the FHLMC may remit the amount
due because of its guarantee of ultimate payment of principal at any time after
default on an underlying mortgage, but in no event later than one year after it
becomes payable. Freddie Macs are not guaranteed by the United States or by any
of the Federal Home Loan Banks and do not constitute a debt or obligation of
the United States or of any Federal Home Loan Bank. The secondary market for
Freddie Macs is highly liquid because of the size of the market and the active
participation in the secondary market of the FHLMC, security dealers and a
variety of investors.

      (3) FNMA Guaranteed Mortgage Pass-Through Certificates ("Fannie
Maes")-Fannie Maes represent an undivided interest in a pool of conventional
mortgage loans secured by first mortgages or deeds of trust, on one family or
two to four family, residential properties. The FNMA is obligated to distribute
scheduled monthly installments of principal and interest on the mortgages in
the pool, whether or not received, plus full principal of any foreclosed or
otherwise liquidated mortgages. The obligation of the FNMA under its guarantee
is solely its obligation and is not backed by, nor entitled to, the full faith
and credit of the United States.

      (4) Mortgage-Related Securities Issued by Private Organizations-Pools
created by non-governmental issuers generally offer a higher rate of interest
than government and government-related pools because there are no direct or
indirect government guarantees of payments in such pools. However, timely
payment of interest and principal of these pools is often partially supported
by various enhancements such as over-collateralization and senior/subordination
structures and by various forms of insurance or guarantees, including
individual loan, title, pool and hazard insurance.  The insurance and
guarantees are issued by government entities, private insurers or the mortgage
poolers. Although the market for such securities is becoming increasingly
liquid, securities issued by certain private organizations may not be readily
marketable.

      Municipal Lease Obligations ("MLOs")-MLOs are issued by state and local
governments and authorities to acquire land and a wide variety of equipment and
facilities. These obligations typically are not fully backed by the
municipality's credit and thus interest may become taxable if the lease is
assigned. If funds are not appropriated for the following year's lease
payments, a lease may terminate with the possibility of default on the





                                       29
<PAGE>   74
lease obligation. With respect to MLOs purchased by the corresponding Portfolio
of the Municipal Money Market Fund, the AMR Trust Board has established the
following guidelines for determining the liquidity of the MLOs in its
portfolio, and, subject to review by the AMR Trust Board, has delegated that
responsibility to the investment adviser: (1) the frequency of trades and
quotes for the security; (2) the number of dealers willing to purchase or sell
the security and the number of other potential buyers; (3) the willingness of
dealers to undertake to make a market in the security; (4) the nature of the
marketplace trades; (5) the likelihood that the marketability of the obligation
will be maintained through the time the security is held by the Portfolio; (6)
the credit quality of the issuer and the lessee; (7) the essentiality to the
lessee of the property covered by the lease and (8) for unrated MLOs, the MLOs'
credit status analyzed according to the factors reviewed by rating agencies.

      Private Activity Obligations-Private activity obligations are issued to
finance, among other things, privately operated housing facilities, pollution
control facilities, convention or trade show facilities, mass transit, airport,
port or parking facilities and certain facilities for water supply, gas,
electricity, sewage or solid waste disposal.  Private activity obligations are
also issued to privately held or publicly owned corporations in the financing
of commercial or industrial facilities. The principal and interest on these
obligations may be payable from the general revenues of the users of such
facilities. Shareholders, depending on their individual tax status, may be
subject to the federal alternative minimum tax on the portion of a distribution
attributable to these obligations. Interest on private activity obligations
will be considered exempt from federal income taxes; however, shareholders
should consult their own tax advisers to determine whether they may be subject
to the federal alternative minimum tax.

      Ratings of Long-Term Obligations-The Portfolio utilizes ratings provided
by the following nationally recognized statistical rating organizations
("Rating Organizations") in order to determine eligibility of long-term
obligations.

      The four highest Moody's Investors Service, Inc. ("Moody's") ratings for
long-term obligations (or issuers thereof) are Aaa, Aa, A and Baa. Obligations
rated Aaa are judged by Moody's to be of the best quality. Obligations rated Aa
are judged to be of high quality by all standards. Together with the Aaa group,
such debt comprises what is generally known as high-grade debt. Moody's states
that debt rated Aa is rated lower than Aaa debt because margins of protection
or other elements make long-term risks appear somewhat larger than for Aaa
debt. Obligations which are rated A by Moody's possess many favorable
investment attributes and are considered "upper medium-grade obligations."
Obligations which are rated Baa by Moody's are considered to be medium grade
obligations, i.e., they are neither highly protected or poorly secured.
Interest payments and principal security appear adequate for the present but
certain protective elements may be lacking or may be characteristically
unreliable over any great length of time. Moody's also supplies numerical
indicators 1, 2, and 3 to rating categories. The modifier 1 indicates that the
security is in the higher end of its rating category; the modifier 2 indicates
a mid-range ranking; and modifier 3 indicates a ranking toward the lower end of
the category.

      The four highest Standard & Poor's ratings for long-term obligations are
AAA, AA, A and BBB. Obligations rated AAA have the highest rating assigned by
Standard & Poor's. Capacity to pay interest and repay principal is extremely
strong.  Obligations rated AA have a very strong capacity to pay interest and
repay principal and differs from the highest rated issues only in a small
degree. Obligations rated A have a strong capacity to pay principal and
interest, although they are somewhat more susceptible to the adverse effects of
changes in circumstances and economic conditions. Obligations rated BBB by
Standard & Poor's are regarded as having adequate capacity to pay interest and
repay principal. Whereas it normally exhibits adequate protection parameters,
adverse economic conditions or changing circumstances are more likely to lead
to a weakened capacity to pay interest and repay principal for debt in this
category than in higher rated categories.

      Duff & Phelps' four highest ratings for long-term obligations are AAA,
AA, A and BBB. Obligations rated AAA have the highest credit quality with risk
factors being negligible. Obligations rated AA are of high credit quality and
strong protection factors. Risk is modest but may vary slightly from time to
time because of economic conditions.  Obligations rated A have average but
adequate protection factors. However, risk factors are more variable and
greater in periods of economic stress. Obligations rated BBB have below average
protection factors with considerable variability in risk during economic
cycles, but are still considered sufficient for prudent investment.

      Thomson BankWatch ("BankWatch") long-term debt ratings apply to specific
issues of long-term debt and preferred stock. They specifically assess the
likelihood of an untimely repayment of principal or interest over the





                                       30
<PAGE>   75
term to maturity of the rated instrument. BankWatch's four highest ratings for
long-term obligations are AAA, AA, A and BBB. Obligations rated AAA indicate
that the ability to repay principal and interest on a timely basis is very
high.  Obligations rated AA indicate a superior ability to repay principal and
interest on a timely basis, with limited incremental risk compared to issues
rated in the highest category. Obligations rated A indicate the ability to
repay principal and interest is strong. Issues rated A could be more vulnerable
to adverse developments (both internal and external) than obligations with
higher ratings. BBB is the lowest investment grade category and indicates an
acceptable capacity to repay principal and interest. Issues rated BBB are,
however, more vulnerable to adverse developments (both internal and external)
than obligations with higher ratings.

   
      Fitch IBCA, Inc. ("Fitch") investment grade bond ratings provide a guide
to investors in determining the credit risk associated with a particular
security. The ratings represent Fitch's assessment of the issuer's ability to
meet the obligations of a specific debt issue or class of debt in a timely
manner. Obligations rated AAA are considered to be investment grade and of the
highest credit quality. The obligor has an exceptionally strong ability to pay
interest and repay principal, which is unlikely to be affected by reasonable
foreseeable events. Bonds rated AA are considered to be investment grade and of
very high credit quality. The obligor's ability to pay interest and repay
principal is very strong, although not quite as strong as bonds rated AAA.
Bonds rated A are considered to be investment grade and of high credit quality.
The obligor's ability to pay interest and repay principal is considered to be
strong, but may be more vulnerable to adverse changes in economic conditions
and circumstances than bonds with higher ratings. Bonds rated BBB are
considered to be investment grade and of satisfactory credit quality. The
obligor's ability to pay interest and repay principal is considered to be
adequate. Adverse changes in economic conditions and circumstances, however,
are more likely to have adverse impact on these bonds, and therefore impair
timely payment. The likelihood that the ratings of these bonds will fall below
investment grade is higher than for bonds with higher ratings.
    

      Standard & Poor's, Duff & Phelps and Fitch apply indicators, such as
"+","-," or no character, to indicate relative standing within the major rating
categories.

   
      Ratings of Municipal Obligations-Moody's ratings for state and municipal
short-term obligations are designated Moody's Investment Grade or "MIG" with
variable rate demand obligations being designated as "VMIG." A VMIG rating also
may be assigned to commercial paper programs which are characterized as having
variable short-term maturities but having neither a variable rate nor demand
feature. Factors used in determination of ratings include liquidity of the
borrower and short-term cyclical elements.
    

      Standard & Poor's uses SP-1, SP-2, and SP-3 to rate short-term municipal
obligations. A rating of SP-1 denotes a very strong or strong capacity to pay
principal and interest.

      Ratings of Short-term Obligations-The rating P-1 is the highest
short-term rating assigned by Moody's. Among the factors considered by Moody's
in assigning ratings are the following: (1) evaluations of the management of
the issuer; (2) economic evaluation of the issuer's industry or industries and
an appraisal of speculative-type risks which may be inherent in certain areas;
(3) evaluation of the issuer's products in relation to competition and customer
acceptance; (4) liquidity; (5) amount and quality of long-term debt; (6) trend
of earnings over a period of ten years; (7) financial strength of a parent
company and the relationships which exist with the issuer; and (8) recognition
by the management of obligations which may be present or may arise as a result
of public interest questions and preparations to meet such obligations.

      Short-term obligations (or issuers thereof) rated A-1 by Standard &
Poor's have the following characteristics.  Liquidity ratios are adequate to
meet cash requirements. The issuer has access to at least two additional
channels of borrowing. Basic earnings and cash flow have an upward trend with
allowance made for unusual circumstances. Typically, the issuer's industry is
well established and the issuer has a strong position within the industry. The
reliability and quality of management are unquestioned. Relative strength or
weakness of the above factors determines whether the issuer's short-term
obligation is rated A-1, A-2, or A-3.

      IBCA's short-term rating of A-1 indicates obligations supported by the
highest capacity for timely repayment.  Where issues possess particularly
strong credit features, a rating of A-1+ is assigned. Obligations rated A-2 are
supported by a good capacity for timely repayment.

      The distinguishing feature of Duff & Phelps Credit Ratings' short-term
rating is the refinement of the traditional 1 category. The majority of
short-term debt issuers carry the highest rating, yet quality differences exist
within that tier. Obligations rated D-1+ indicate the highest certainty of
timely payment. Safety is just below





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risk-free U.S. Treasury obligations. Obligations rated D-1 have a very high
certainty of timely payment. Risk factors are minor. Obligations rated D-1-
have a high certainty of timely payment. Risk factors are very small.
Obligations rated D-2 have good certainty of timely payment. Liquidity factors
and company fundamentals are sound. Although ongoing funding needs may enlarge
total financing requirements, access to capital markets is good. Risk factors
are small.

      Thomson BankWatch short-term ratings are intended to assess the
likelihood of an untimely or incomplete payment of principal or interest.
Obligations rated TBW-1 indicate a very high likelihood that principal and
interest will be paid on a timely basis. While the degree of safety regarding
timely payment of principal and interest is strong for an obligation rated
TBW-2, the relative degree of safety is not as high as for issues rated TBW-1.

      Fitch's short-term ratings apply to debt obligations that are payable on
demand or have original maturities of generally up to three years, including
commercial paper, certificates of deposit, medium-term notes, and municipal and
investment notes. A rating of F-1+ indicates exceptionally strong credit
quality. Issues assigned this rating are regarded as having the strongest
degree of assurance for timely payment. Obligations rated F-1 have very strong
credit quality. Issues assigned this rating reflect an assurance of timely
payment only slightly less in degree than issues rated F-1+. Issues assigned a
rating of F-2 indicate good credit quality. Issues assigned this rating have a
satisfactory degree of assurance for timely payment, but the margin of safety
is not as great as for issues assigned F- 1+ and F-1 ratings.

      Repurchase Agreements-A repurchase agreement, which provides a means to
earn income on funds for periods as short as overnight, is an arrangement under
which the purchaser (e.g., a Portfolio) purchases securities and the seller
agrees, at the time of sale, to repurchase the securities at a specified time
and price. The repurchase price will be higher than the purchase price, the
difference being income to the purchaser, or the purchase and repurchase prices
may be the same, with interest at a stated rate due to the purchaser together
with the repurchase price on repurchase. In either case, the income to the
purchaser is unrelated to the interest rate on the securities subject to the
repurchase agreement.

      Each Portfolio may enter into repurchase agreements with any bank or
registered broker-dealer who, in the opinion of the AMR Trust Board, presents a
minimum risk of bankruptcy during the term of the agreement based upon
guidelines that periodically are reviewed by the AMR Trust Board. Each
Portfolio may enter into repurchase agreements as a short- term investment of
its idle cash in order to earn income. The securities will be held by a
custodian (or agent) approved by the AMR Trust Board during the term of the
agreement. However, if the market value of the securities subject to the
repurchase agreement becomes less than the repurchase price (including
interest), the Portfolio will direct the seller of the securities to deliver
additional securities so that the market value of all securities subject to the
repurchase agreement will equal or exceed the repurchase price.

      In the event of the commencement of bankruptcy or insolvency proceedings
with respect to the seller of the securities before the repurchase of the
securities under a repurchase agreement, a Portfolio may encounter a delay and
incur costs before being able to sell the security being held as collateral.
Delays may involve loss of interest or decline in price of the securities.
Apart from the risk of bankruptcy or insolvency proceedings, there is also the
risk that the seller may fail to repurchase the securities, in which case a
Portfolio may incur a loss if the proceeds to the Portfolio from the sale of
the securities to a third party are less than the repurchase price.

      Reverse Repurchase Agreements-The Portfolios may borrow funds for
temporary purposes by entering into reverse repurchase agreements. Pursuant to
such agreements, a Portfolio would sell portfolio securities to financial
institutions such as banks and broker/dealers and agree to repurchase them at a
mutually agreed-upon date and price. The Portfolios intend to enter into
reverse repurchase agreements only to avoid selling securities to meet
redemptions during market conditions deemed unfavorable by the investment
adviser possessing investment authority. At the time a Portfolio enters into a
reverse repurchase agreement, it will place in a segregated custodial account
assets such as liquid high quality debt securities having a value not less than
100% of the repurchase price (including accrued interest), and will
subsequently monitor the account to ensure that such required value is
maintained. Reverse repurchase agreements involve the risk that the market
value of the securities sold by a Portfolio may decline below the price at
which such Portfolio is obligated to repurchase the securities. Reverse
repurchase agreements are considered to be borrowings by an investment company
under the 1940 Act.





                                       32
<PAGE>   77
      Resource Recovery Obligations-Resource recovery obligations are a type of
municipal revenue obligation issued to build facilities such as solid waste
incinerators or waste-to-energy plants. Usually, a private corporation will be
involved and the revenue cash flow will be supported by fees or units paid by
municipalities for use of the facilities.  The viability of a resource recovery
project, environmental protection regulations and project operator tax
incentives may affect the value and credit quality of these obligations.

      Revenue Obligations-Revenue obligations are backed by the revenue cash
flow of a project or facility.

      Rights and Warrants-Rights are short-term warrants issued in conjunction
with new stock issues. Warrants are options to purchase an issuer's securities
at a stated price during a stated term. There is no specific limit on the
percentage of assets a Portfolio may invest in rights and warrants, although
the ability of some of the Portfolios to so invest is limited by their
investment objectives or policies.

      Separately Traded Registered Interest and Principal Securities and Zero
Coupon Obligations-Separately traded registered interest and principal
securities or "STRIPS" and zero coupon obligations are securities that do not
make regular interest payments. Instead they are sold at a discount from their
face value. Each Portfolio will take into account as income a portion of the
difference between these obligations' purchase prices and their face values.
Because they do not pay coupon income, the prices of STRIPS and zero coupon
obligations can be very volatile when interest rates change. STRIPS are zero
coupon bonds issued by the U.S. Treasury.

      Tax, Revenue or Bond Anticipation Notes-Tax, revenue or bond anticipation
notes are issued by municipalities in expectation of future tax or other
revenues which are payable from these specific taxes or revenues. Bond
anticipation notes usually provide interim financing in advance of an issue of
bonds or notes, the proceeds of which are used to repay the anticipation notes.
Tax-exempt commercial paper is issued by municipalities to help finance
short-term capital or operating needs in anticipation of future tax or other
revenue.

      U.S. Government Securities-U.S. Government securities are issued or
guaranteed by the U.S. Government and include U.S. Treasury obligations (see
definition below) and securities issued by U.S. agencies and instrumentalities.

      U. S. Government agencies or instrumentalities that issue or guarantee
securities include, but are not limited to, the Federal Housing Administration,
Farmers Home Administration, Export-Import Bank of the United States, Small
Business Administration, GNMA, General Services Administration, Central Bank
for Cooperatives, Federal Home Loan Banks, FHLMC, Federal Intermediate Credit
Banks, Federal Land Banks, Maritime Administration, Tennessee Valley Authority,
District of Columbia Armory Board, Inter-American Development Bank,
Asian-American Development Bank, Agency for International Development, Student
Loan Marketing Association and International Bank of Reconstruction and
Development.

      Obligations of U.S. Government agencies and instrumentalities may or may
not be supported by the full faith and credit of the United States. Some are
backed by the right of the issuer to borrow from the Treasury; others are
supported by discretionary authority of the U.S. Government to purchase the
agencies' obligations; while still others, such as the Student Loan Marketing
Association, are supported only by the credit of the instrumentality. In the
case of securities not backed by the full faith and credit of the United
States, the investor must look principally to the agency issuing or
guaranteeing the obligation for ultimate repayment, and may not be able to
assert a claim against the United States itself in the event the agency or
instrumentality does not meet its commitment.

      U.S. Treasury Obligations-U.S. Treasury obligations include bills, notes
and bonds issued by the U.S. Treasury and Separately Traded Registered Interest
and Principal component parts of such obligations known as STRIPS.

      Variable or Floating Rate Obligations-A variable rate obligation is one
whose terms provide for the adjustment of its interest rate on set dates and
which, upon such adjustment, can reasonably be expected to have a market value
that approximates its par value. A floating rate obligation is one whose terms
provide for the adjustment of its interest rate whenever a specified interest
rate changes and which, at any time, can reasonably be expected to have a
market value that approximates its par value. Variable or floating rate
obligations may be secured by bank letters of credit.





                                       33
<PAGE>   78
      Pursuant to Rule 2a-7 under the 1940 Act, variable or floating rate
obligations with stated maturities of more than 397 days may be deemed to have
shorter maturities as follows:

      (1) An obligation that is issued or guaranteed by the United States
Government or any agency thereof which has a variable rate of interest
readjusted no less frequently than every 762 days will be deemed by a Portfolio
to have a maturity equal to the period remaining until the next readjustment of
the interest rate.

      (2) A variable rate obligation, the principal amount of which is
scheduled on the face of the instrument to be paid in 397 days or less, will be
deemed by a Portfolio to have a maturity equal to the period remaining until
the next readjustment of the interest rate.

      (3) A variable rate obligation that is subject to a demand feature will
be deemed by a Portfolio to have a maturity equal to the longer of the period
remaining until the next readjustment of the interest rate or the period
remaining until the principal amount can be recovered through demand.

      (4) A floating rate obligation that is subject to a demand feature will
be deemed by a Portfolio to have a maturity equal to the period remaining until
the principal amount can be recovered through demand.

      As used above, an obligation is "subject to a demand feature" when a
Portfolio is entitled to receive the principal amount of the obligation either
at any time on no more than 30 days' notice or at specified intervals not
exceeding one year and upon no more than 30 days' notice.

      Variable Rate Auction and Residual Interest Obligations-Variable rate
auction and residual interest obligations are created when an issuer or dealer
separates the principal portion of a long-term, fixed-rate municipal bond into
two long-term, variable-rate instruments. The interest rate on one portion
reflects short-term interest rates, while the interest rate on the other
portion is typically higher than the rate available on the original fixed-rate
bond.

   
      When-Issued and Delayed Delivery Securities-Delivery of and payment for
securities on a when-issued or delayed delivery basis may take place as long as
a month or more after the date of the purchase commitment. The value of these
securities is subject to market fluctuation during this period and no income
accrues to a Portfolio until settlement takes place. A Portfolio maintains with
the Custodian a segregated account containing high grade liquid securities in
an amount at least equal to these commitments. When entering into a when-issued
or delayed delivery transaction, the Portfolio will rely on the other party to
consummate the transaction; if the other party fails to do so, the Portfolio
may be disadvantaged.
    

                              FINANCIAL STATEMENTS

   
      The Mileage Trust's Annual Report to Shareholders for the period ended
October 31, 1997 is supplied with the Statement of Additional Information, and
the financial statements and accompanying notes appearing therein are
incorporated by reference in this Statement of Additional Information.
    





                                       34
<PAGE>   79
   
                                   APPENDIX A


      The following table shows the performance of the S&P 500 Composite Stock
Price Index for the periods indicated.  Stock prices fluctuated widely during
the periods but were higher at the end than at the beginning. The results shown
should not be considered as a representation of the income or capital gain or
loss that may be generated by the Index in the future or should this be
considered a representation of the past or future performance of the S&P 500
Index Fund.
    


   
<TABLE>
<CAPTION>
                    Year              Total Return          Year             Total Return          Year              Total Return
                    <S>                    <C>              <C>                   <C>              <C>                    <C>
                    1997                                    1973                  -14.66%          1949                    18.79%
                    1996                    23.03%          1972                   18.98%          1948                     5.50%
                    1995                    37.49%          1971                   14.31%          1947                     5.71%
                    1994                     1.32%          1970                    4.01%          1946                    -8.07%
                    1993                     9.99%          1969                   -8.51%          1945                    36.44%
                    1992                     7.67%          1968                   11.06%          1944                    19.75%
                    1991                    30.55%          1967                   23.98%          1943                    25.90%
                    1990                    -3.17%          1966                  -10.06%          1942                    20.34%
                    1989                    31.49%          1965                   12.45%          1941                   -11.59%
                    1988                    16.81%          1964                   16.48%          1940                    -9.78%
                    1987                     5.23%          1963                   22.08%          1939                    -0.41%
                    1986                    18.47%          1962                   -8.73%          1938                    31.12%
                    1985                    32.16%          1961                   26.89%          1937                   -35.03%
                    1984                     6.27%          1960                    0.47%          1936                    33.92%
                    1983                    22.51%          1959                   11.96%          1935                    47.67%
                    1982                    21.41%          1958                   43.36%          1934                    -1.44%
                    1981                    -4.91%          1957                  -10.78%          1933                    53.99%
                    1980                    32.42%          1956                    6.56%          1932                    -8.19%
                    1979                    18.44%          1955                   31.56%          1931                   -43.34%
                    1978                     6.56%          1954                   52.62%          1930                   -24.90%
                    1977                    -7.18%          1953                   -0.99%          1929                    -8.42%
                    1976                    23.84%          1952                   18.73%          1928                    43.61%
                    1975                    37.20%          1951                   24.02%          1927                    37.49%
                    1974                   -26.47%          1950                   31.71%          1926                    11.62%

</TABLE>
    




                                       35
<PAGE>   80
                               TABLE OF CONTENTS
   
<TABLE>
<S>                                                                                                                   <C>
Investment Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1


Trustees and Officers of the Mileage Trust and the AMR Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5


Trustees and Officers of the Equity 500 Index Portfolio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8


Management, Administrative Services and Distribution Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9


Approach to Stock Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10


Redemptions in Kind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10


Investment Advisory Agreements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10


Portfolio Securities Transactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12


Net Asset Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13


Tax Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14


Yield and Total Return Quotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16


Description of the Mileage Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19


Control Persons and 5% Shareholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20


Other Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20


Financial Statements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33


Appendix A  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34

</TABLE>
    




                                       36
<PAGE>   81
 
   
THIS PROSPECTUS contains important information about the Platinum Class of the
AMERICAN AADVANTAGE FUNDS ("AAdvantage Trust") and the AMERICAN AADVANTAGE
MILEAGE FUNDS ("Mileage Trust"), each an open-end management investment company
which consists of multiple investment portfolios. This Prospectus pertains only
to the four funds listed on this cover page (individually referred to as a
"Fund" and, collectively, the "Funds"). EACH FUND SEEKS ITS INVESTMENT
OBJECTIVE BY INVESTING ALL OF ITS INVESTABLE ASSETS IN A CORRESPONDING
PORTFOLIO (INDIVIDUALLY REFERRED TO AS A "PORTFOLIO" AND, COLLECTIVELY,
"PORTFOLIOS") OF THE AMR INVESTMENT SERVICES TRUST ("AMR TRUST") WHICH HAS AN
INVESTMENT OBJECTIVE IDENTICAL TO THE INVESTING FUND. The investment experience
of each Fund will correspond directly with the investment experience of each
Portfolio. Each Fund consists of multiple classes of shares designed to meet
the needs of different groups of investors. Platinum Class shares are offered
exclusively to customers of certain broker-dealers. Prospective Platinum Class
investors should read this Prospectus carefully before making an investment
decision and retain it for future reference.
    
 
   
IN ADDITION TO THIS PROSPECTUS, a Statement of Additional Information ("SAI")
for the Platinum Class dated March 1, 1998 has been filed with the Securities
and Exchange Commission and is incorporated herein by reference. The SAI
contains more detailed information about the Funds. For a free copy of the SAI,
call 800-973-7977. For further information on the Funds, refer to the address
and phone number on the back cover.
    
 
AN INVESTMENT IN THE FUNDS IS NEITHER INSURED NOR GUARANTEED BY THE U.S.
GOVERNMENT AND THERE CAN BE NO ASSURANCE THAT THEY WILL BE ABLE TO MAINTAIN A
STABLE PRICE OF $1.00 PER SHARE.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 

                                   Prospectus
                                 March 1, 1998
                        [AMERICAN AADVANTAGE FUNDS LOGO]
                                 Platinum Class
                               MONEY MARKET FUND
                          MUNICIPAL MONEY MARKET FUND
                       U.S. GOVERNMENT MONEY MARKET FUND
                    [AMERICAN AADVANTAGE MILEAGE FUNDS LOGO]
                           MONEY MARKET MILEAGE FUND
                                        
                               Available through
                                        
                                        
                                        
                          [SOUTHWEST SECURITIES LOGO]
<PAGE>   82
 
   
The AMERICAN AADVANTAGE MONEY MARKET FUNDSM ("Money Market Fund"), AMERICAN
AADVANTAGE MUNICIPAL MONEY MARKET FUNDSM ("Municipal Money Market Fund") and
AMERICAN AADVANTAGE U.S. GOVERNMENT MONEY MARKET FUNDSM ("U.S. Government Money
Market Fund") (collectively, "AAdvantage Funds") and the AMERICAN AADVANTAGE
MONEY MARKET MILEAGE FUNDSM ("Mileage Fund") each seeks current income,
liquidity, and the maintenance of a stable price per share of $1.00. The Money
Market Fund and the Mileage Fund each seeks its investment objective by
investing all of its investable assets in the Money Market Portfolio of the AMR
Trust ("Money Market Portfolio"); the Municipal Money Market Fund seeks its
investment objective by investing all of its investable assets in the Municipal
Money Market Portfolio of the AMR Trust ("Municipal Money Market Portfolio");
and the U.S. Government Money Market Fund seeks its investment objective by
investing all of its investable assets in the U.S. Government Money Market
Portfolio of the AMR Trust ("U.S. Government Money Market Portfolio"),
(collectively, the "Portfolios"), which in turn invest in high quality,
short-term obligations. The Municipal Money Market Portfolio invests primarily
in municipal obligations and the U.S. Government Money Market Portfolio invests
exclusively in obligations issued or guaranteed by the U.S. Government, its
agencies or instrumentalities and in repurchase agreements that are
collateralized by such obligations.
    
 
   
    Under a master-feeder operating structure, each Fund seeks its investment
objective by investing all of its investable assets in a corresponding Portfolio
as described above. Each Portfolio's investment objective is identical to that
of its corresponding Fund. Whenever the phrase "all of the Fund's investable
assets" is used, it means that the only investment securities that will be held
by a Fund will be that Fund's interest in its corresponding Portfolio. AMR
Investment Services, Inc. ("Manager") provides investment management and
administrative services to the Portfolios and administrative services to the
Funds. This master-feeder operating structure is different from that of many
other investment companies which directly acquire and manage their own
portfolios of securities. Accordingly, investors should carefully consider this
investment approach. See "Investment Objectives, Policies and
Risks -- Additional Information About the Portfolios." An AAdvantage Fund or the
Mileage Fund may withdraw its investment in a corresponding Portfolio at any
time if the applicable Trust's Board of Trustees ("Board") determines that it
would be in the best interest of that Fund and its shareholders to do so. Upon
any such withdrawal, that Fund's assets would be invested in accordance with the
investment policies and restrictions described in this Prospectus and the SAI.
    
 
   
<TABLE>
    <S>                                              <C>
    TABLE OF FEES AND EXPENSES......................   3
    FINANCIAL HIGHLIGHTS............................   4
    INTRODUCTION....................................   7
    INVESTMENT OBJECTIVES, POLICIES AND RISKS.......   8
    INVESTMENT RESTRICTIONS.........................  16
    YIELDS AND TOTAL RETURNS........................  17
    MANAGEMENT AND ADMINISTRATION OF THE TRUSTS.....  17
    AADVANTAGE(R) MILES.............................  20
    HOW TO PURCHASE SHARES..........................  21
    HOW TO REDEEM SHARES............................  23
    VALUATION OF SHARES.............................  24
    DIVIDENDS AND TAX MATTERS.......................  25
    GENERAL INFORMATION.............................  26
    SHAREHOLDER COMMUNICATIONS......................  27
</TABLE>
    
 
PROSPECTUS
 
                                        2
<PAGE>   83
 
TABLE OF FEES AND EXPENSES
 
     Annual Operating Expenses (as a percentage of average net assets):
 
<TABLE>
<CAPTION>
                                                      MUNICIPAL      U.S. GOVERNMENT       MONEY
                                        MONEY           MONEY             MONEY           MARKET
                                        MARKET         MARKET            MARKET           MILEAGE
                                         FUND           FUND              FUND             FUND
<S>                                     <C>           <C>            <C>                  <C>
Management Fees                          0.15%          0.15%             0.15%            0.15%
 
12b-1 Fees                               0.25%          0.25%             0.25%            0.25%(1)
 
Other Expenses                           0.53%          0.65%             0.60%            0.69%
                                         ----         ------         ---------            -----
 
Total Operating Expenses                 0.93%          1.05%             1.00%            1.09%
                                         ====         ======         =========            =====
</TABLE>
 
(1) The Mileage Trust anticipates that a portion of the "12b-1 Fees" charged for
    the current fiscal year will be used to pay for AAdvantage miles. See
    "AAdvantage Miles." The Manager anticipates waiving a portion of the 12b-1
    fees of the Mileage Fund.
 
    The above expenses reflect the expenses of each Fund and the Portfolio in
which it invests. The Board believes that the aggregate per share expenses of
each Fund and its corresponding Portfolio will be approximately equal to the
expenses that the Fund would incur if its assets were invested directly in the
type of securities held by the Portfolio.
 
EXAMPLES
 
    A Platinum Class investor in each Fund would directly or indirectly pay on a
cumulative basis the following expenses on a $1,000 investment assuming a 5%
annual return:
 
<TABLE>
<CAPTION>
                                                            1              3              5              10
                                                           YEAR          YEARS          YEARS          YEARS
<S>                                                       <C>           <C>            <C>            <C>
Money Market Fund                                            9             30             51             114
 
Municipal Money Market Fund                                 11             33             58             128
 
U.S. Government Money Market Fund                           10             32             55             122
Money Market Mileage Fund                                   11             35             60             133
</TABLE>
 
    The purpose of the table above is to assist a potential investor in
understanding the various costs and expenses expected to be incurred directly or
indirectly as a Platinum Class shareholder in a Fund. Additional information may
be found under "Management and Administration of the Trusts."
 
THE FOREGOING EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES MAY BE GREATER OR LESS THAN
THOSE SHOWN AND PERFORMANCE MAY BE BETTER OR WORSE THAN THE 5% ANNUAL RETURN
ASSUMED IN THE EXAMPLES.
 
                                                                      PROSPECTUS
 
                                        3
<PAGE>   84
 
FINANCIAL HIGHLIGHTS
 
The financial highlights in the following tables for the AAdvantage Funds and
the Mileage Fund have been derived from financial statements of the AAdvantage
Trust and the Mileage Trust, respectively. The information has been audited by
Ernst & Young LLP, independent auditor. Such information should be read in
conjunction with the financial statements and the report of the independent
auditor appearing in the Annual Report of the AAdvantage Trust and the Mileage
Trust incorporated by reference in the SAI, which contains further information
about performance of the Funds and can be obtained by investors without charge.
 
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
   
<TABLE>
<CAPTION>
                                                                   MONEY MARKET FUND
                              -------------------------------------------------------------------------------------------
                                  PLATINUM CLASS
                              ----------------------                           INSTITUTIONAL CLASS
                                 YEAR        PERIOD      ----------------------------------------------------------------
                                 ENDED       ENDED                            YEAR ENDED OCTOBER 31,
                               OCT. 31,     OCT. 31,     ----------------------------------------------------------------
                                 1997       1996(1)         1996           1995       1994(2)        1993         1992
                              -------------------------------------------------------------------------------------------
<S>                           <C>           <C>          <C>            <C>          <C>          <C>          <C>
Net asset value,
beginning of period            $   1.00     $   1.00     $     1.00     $     1.00   $     1.00   $     1.00   $     1.00
                                 ------         ----          -----          -----        -----        -----        -----
Net investment income                           0.05(3)        0.05(3)        0.06         0.04         0.03         0.04
Less dividends from net
 investment income                             (0.05)         (0.05)         (0.06)       (0.04)       (0.03)       (0.04)
                                 ------         ----          -----          -----        -----        -----        -----
Net asset value, end of
period                         $   1.00     $   1.00     $     1.00     $     1.00   $     1.00   $     1.00   $     1.00
                                 ======         ====          =====          =====        =====        =====        =====
Total return (annualized)              %        4.85%(4)       5.57%          5.96%        3.85%        3.31%        4.41%
                                 ======         ====          =====          =====        =====        =====        =====
Ratios/supplemental data:
 Net assets, end of period
  (in thousands)                            $119,981     $1,406,939     $1,206,041   $1,893,144   $2,882,947   $2,223,829
 Ratios to average net
  assets (annualized)(5)(6):
  Expenses                                      0.94%(3)       0.24%(3)       0.23%        0.21%        0.23%        0.26%
  Net investment income                         4.63%(3)       5.41%(3)       5.79%        3.63%        3.23%        4.06%
 
<CAPTION>
                                          MONEY MARKET FUND
                              -----------------------------------------
 
                                         INSTITUTIONAL CLASS
                              -----------------------------------------
                                       YEAR ENDED OCTOBER 31,
                              -----------------------------------------
                                1991       1990       1989       1988
                              -----------------------------------------
<S>                           <C>        <C>        <C>        <C>
Net asset value,
beginning of period           $   1.00   $   1.00   $   1.00   $   1.00
                                  ----       ----       ----       ----
Net investment income             0.07       0.08       0.09       0.08
Less dividends from net
 investment income               (0.07)     (0.08)     (0.09)     (0.08)
                                  ----       ----       ----       ----
Net asset value, end of
period                        $   1.00   $   1.00   $   1.00   $   1.00
                                  ====       ====       ====       ====
Total return (annualized)         7.18%      8.50%      9.45%      7.54%
                                  ====       ====       ====       ====
Ratios/supplemental data:
 Net assets, end of period
  (in thousands)              $715,280   $745,405   $385,916   $330,230
 Ratios to average net
  assets (annualized)(5)(6):
  Expenses                        0.24%      0.20%      0.22%      0.28%
  Net investment income           6.93%      8.19%      9.11%      7.54%
</TABLE>
    
 
(1) The Money Market Fund commenced active operations on September 1, 1987. The
    Platinum Class commenced active operations on November 7, 1995.
 
(2) Average shares outstanding for the period rather than end of period shares
    were used to compute net investment income per share.
 
(3) The per share amounts and ratios reflect income and expenses assuming
    inclusion of the Fund's proportionate share of the income and expenses of
    the Money Market Portfolio.
 
(4) Total return for the Platinum Class for the period ended October 31, 1996,
    reflects Institutional Class returns from November 1, 1995 through November
    6, 1995 and returns of the Platinum Class through October 31, 1996. Due to
    the different expense structures between the classes, total return would
    vary from the results shown had the Platinum Class been in operation for the
    entire year.
 
(5) The method of determining average net assets was changed from a monthly
    average to a daily average starting with the year ended October 31, 1992.
 
(6) Effective October 1, 1990, expenses include administrative services fees
    paid by the Fund to the Manager. Prior to that date, expenses exclude
    shareholder services fees paid directly by shareholders to the Manager,
    which amounted to less than $.01 per share in each period on an annualized
    basis.
 
PROSPECTUS
 
                                        4
<PAGE>   85
 
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
   
<TABLE>
<CAPTION>
                                                                             MUNICIPAL MONEY MARKET FUND
                                                     ----------------------------------------------------------------------------
                                                            PLATINUM CLASS                          INSTITUTIONAL CLASS
                                                     -----------------------------        ---------------------------------------
                                                      YEAR ENDED     PERIOD ENDED          YEAR ENDED OCT. 31,       PERIOD ENDED
                                                       OCT. 31,        OCT. 31,           ---------------------        OCT. 31,
                                                         1997          1996(1)             1996          1995          1994(1)
                                                     ----------------------------------------------------------------------------
<S>                                                  <C>            <C>                   <C>           <C>          <C>
Net asset value, beginning of period                    $1.00          $  1.00            $ 1.00        $ 1.00          $ 1.00
                                                      -------        ---------               ---          ----         -------
Net investment income                                                     0.03(2)           0.04(3)       0.04            0.02
Less dividends from net investment income                                (0.03)            (0.04)        (0.04)          (0.02)
                                                      -------        ---------               ---          ----         -------
Net asset value, end of period                          $1.00          $  1.00            $ 1.00        $ 1.00          $ 1.00
                                                      =======        =========               ===          ====         =======
Total return (annualized)                                    %            2.88%(3)          3.59%         3.75%           2.44%
                                                      =======        =========               ===          ====         =======
Ratios/supplemental data:
 Net assets, end of period (in thousands)                              $49,862            $    6        $    7          $9,736
 Ratios to average net assets (annualized)(4)(5):
  Expenses                                                                0.97%(2)          0.27%(2)      0.35%           0.30%
  Net investment income                                                   2.72%(2)          3.49%(2)      3.70%           2.38%
</TABLE>
    
 
   
(1) The Municipal Money Market Fund commenced active operations on November 10,
    1993. The Platinum Class commenced active operations on November 7, 1995.
    
   
(2) The per share amounts and ratios reflect income and expenses assuming
    inclusion of the Fund's proportionate share of the income and expenses of
    its corresponding Portfolio.
    
 
   
(3) Total return for the Platinum Class for the period ended October 31, 1996,
    reflects Institutional Class returns from November 1, 1995 through November
    6, 1995 and returns of the Platinum Class through October 31, 1996. Due to
    the different expense structures between the classes, total return would
    vary from the results shown had the Platinum Class been in operation for the
    entire year.
    
 
   
(4) Operating results of the Municipal Money Market Fund exclude management and
    administrative services fees waived by the Manager. Had the Fund paid such
    fees, the ratio of expenses and net investment income to average net assets
    of the Institutional Class would have been 0.50% and 2.18%, respectively for
    the period ended October 31, 1994; 0.55% and 3.50%, respectively, for the
    year ended October 31, 1995, and 0.33% and 3.43%, respectively for the year
    ended October 31, 1996. The ratio of expenses and net investment income to
    average net assets of the Platinum Class would have been 1.02% and 2.67%,
    respectively for the period ended October 31, 1996.
    
 
   
(5) The method of determining average net assets was changed from a monthly
    average to a daily average starting with the period ended October 31, 1994.
    
 
                                                                      PROSPECTUS
 
                                        5
<PAGE>   86
 
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
   
<TABLE>
<CAPTION>
                                                                U.S. GOVERNMENT MONEY MARKET FUND
                                -------------------------------------------------------------------------------------------------
                                     PLATINUM CLASS                           INSTITUTIONAL CLASS
                                -------------------------      -------------------------------------------------
                                YEAR ENDED   PERIOD ENDED                   YEAR ENDED OCTOBER 31,                   PERIOD ENDED
                                 OCT. 31,      OCT. 31,        -------------------------------------------------       OCT. 31,
                                   1997        1996(1)          1996           1995        1994(2)        1993         1992(1)
                                -------------------------------------------------------------------------------------------------
<S>                             <C>          <C>               <C>           <C>           <C>          <C>          <C>
Net asset value, beginning of
period                            $1.00        $  1.00         $  1.00       $   1.00      $  1.00      $   1.00       $  1.00
                                 ------       --------           -----          -----        -----         -----      --------
Net investment income                             0.04(3)         0.05(3)        0.06         0.04          0.03          0.02
Less dividends from net
investment income                                (0.04)          (0.05)         (0.06)       (0.04)        (0.03)        (0.02)
                                 ------       --------           -----          -----        -----         -----      --------
Net asset value, end of period    $1.00        $  1.00         $  1.00       $   1.00      $  1.00      $   1.00       $  1.00
                                 ======       ========           =====          =====        =====         =====      ========
Total return (annualized)              %          4.58%(4)        5.29%          5.67%        3.70%         3.07%         3.61%
                                 ======       ========           =====            ===        =====         =====      ========
Ratios/supplemental data:
 Net assets, end of period (in
  thousands)                                   $52,153         $25,595       $ 47,184      $67,607      $136,813       $91,453
 Ratios to average net assets
  (annualized)(5)(6):
  Expenses                                        1.00%(3)        0.32%(3)       0.32%        0.25%         0.23%         0.27%(7)
  Net investment income                           4.35%(3)        5.16%(3)       5.49%        3.44%         2.96%         3.46%(7)
</TABLE>
    
 
   
(1) Prior to March 1, 1997 the U.S. Government Money Market Fund was known as
    the American AAdvantage U.S. Treasury Money Market Fund and operated under
    different investment policies. The American AAdvantage U.S. Treasury Money
    Market Fund commenced active operations on March 2, 1992. The Platinum Class
    commenced active operations on November 7, 1995.
    
 
(2) Average shares outstanding for the period rather than end of period shares
    were used to compute net investment income per share.
 
(3) The per share amounts and ratios reflect income and expenses assuming
    inclusion of the Fund's proportionate share of the income and expenses of
    its corresponding Portfolio.
 
(4) Total return for the Platinum Class for the period ended October 31, 1996,
    reflects Institutional Class returns from November 1, 1995 through November
    6, 1995 and returns of the Platinum Class through October 31, 1996. Due to
    the different expense structures between the classes, total return would
    vary from the results shown had the Platinum Class been in operation for the
    entire year.
 
(5) Operating results of the Municipal Money Market Fund exclude management and
    administrative services fees waived by the Manager. Had the Fund paid such
    fees, the ratio of expenses and net investment income to average net assets
    of the Institutional Class would have been 0.50% and 2.18%, respectively for
    the period ended October 31, 1994; 0.55% and 3.50%, respectively, for the
    year ended October 31, 1995, and 0.33% and 3.43%, respectively for the year
    ended October 31, 1996. The ratio of expenses and net investment income to
    average net assets of the Platinum Class would have been 1.02% and 2.67%,
    respectively for the period ended October 31, 1996.
 
(6) The method of determining average net assets was changed from a monthly
    average to a daily average starting with the period ended October 31, 1994.
 
(7) Estimated based on expected annual expenses and actual average net assets.
 
PROSPECTUS
 
                                        6
<PAGE>   87
 
                           (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
   
<TABLE>
<CAPTION>
                                                 MONEY MARKET MILEAGE FUND
                              ---------------------------------------------------------------
                                            PLATINUM CLASS
                              ------------------------------------------      MILEAGE CLASS
                                  YEAR ENDED            PERIOD ENDED        -----------------
                              -------------------    -------------------       YEAR ENDED
                              OCTOBER 31, 1996(1)    OCTOBER 31, 1996(1)    OCTOBER 31, 1996
                              -------------------    -------------------    -----------------
<S>                           <C>                    <C>                    <C>
Net asset value, beginning
  of period                          $  1.00                $  1.00             $   1.00
                                      ------                 ------              -------
Net investment income                                          0.03                 0.05
Less dividends from net
  investment income                                           (0.03)              (0.05)
                                      ------                 ------              -------
Net asset value, end of
  period                             $  1.00                $  1.00             $   1.00
                                      ======                 ======              =======
Total return (annualized)                   %                  4.78%(2)             5.12%
                                      ======                 ======              =======
Ratios/supplemental data:
  Net assets, end of period
    (in thousands)                                          $15,429             $106,709
  Ratios to average net
    assets
    (annualized)(3)(4):
    Expenses                                                   1.09%                0.67%
    Net investment income                                      4.48%                5.02%
</TABLE>
    
 
(1) The Platinum Class of the Money Market Mileage Fund commenced active
    operations on January 29, 1996, and at that time the existing shares of the
    Fund were designated as Mileage Class shares.
 
(2) Total return for the Platinum Class for the period ended October 31, 1996,
    reflects Mileage Class returns from November 1, 1995 through January 27,
    1996 and returns of the Platinum Class through October 31, 1996. Due to the
    different expense structures between the classes, total return would vary
    from the results shown had the Platinum Class been in operation for the
    entire year.
 
(3) The per share amounts reflect income and expenses assuming inclusion of the
    Fund's proportionate share of the income and expenses of the Money Market
    Portfolio.
 
(4) Operating results exclude expenses reimbursed by the Manager. Had the Fund
    paid such fees, the ratio of expenses and net investment income to average
    net assets would have been 1.24% and 4.33%, respectively for the Platinum
    Class for the period ended October 31, 1996 and 0.78% and 4.91%,
    respectively for the Mileage Class for the year ended October 31, 1996.
 
                                                                      PROSPECTUS
 
                                        7
<PAGE>   88
 
INTRODUCTION
 
   
    The AAdvantage Trust and the Mileage Trust are open-end, diversified
management investment companies, organized as Massachusetts business trusts on
January 16, 1987 and February 22, 1995, respectively. The AAdvantage Funds are
three of the several investment portfolios of the AAdvantage Trust and the
Mileage Fund is a separate investment portfolio of the Mileage Trust. Each Fund
has the same investment objective but may have different investment policies.
Each Fund invests all of its investable assets in a corresponding Portfolio of
the AMR Trust with an identical investment objective. Each AAdvantage Fund
currently consists of three classes of shares, including: the "Platinum Class,"
which is available to customers of certain broker-dealers as an investment for
cash balances in their brokerage accounts; the "Institutional Class," which is
available to institutional investors investing at least $2 million in the Funds;
and the "PlanAhead Class," which is available to all investors, including
smaller institutional investors, investors using intermediary organizations such
as discount brokers or plan sponsors, individual retirement accounts and self-
employed individual retirement plans. The Money Market Mileage Fund currently
consists of two classes of shares: the "Platinum Class," as described above; and
the "Mileage Class." The Money Market Mileage Fund is available only to
individuals and certain grantor trusts. Qualified retirement plans (i.e, IRAs,
Keogh, profit sharing plans) and institutional investors are not eligible to
invest in the Money Market Mileage Fund. This Prospectus relates only to the
Platinum Class. For further information about the other classes, or to obtain a
prospectus free of charge, call (800) 967-9009 or write to P.O. Box 619003, MD
5645, Dallas/Ft. Worth Airport, Texas 75261.
    
 
    Although each class of shares is designed to meet the needs of different
categories of investors, all classes of each Fund share the same portfolio of
investments and a common investment objective. See "Investment Objectives,
Policies and Risks." There is no guarantee that a Fund will achieve its
investment objective. Based on its value, a share of a Fund, regardless of
class, will receive a proportionate share of the investment income and the gains
(or losses) earned (or incurred) by the Fund. It also will bear its
proportionate share of expenses that are allocated to the Fund as a whole.
However, certain expenses are allocated separately to each class of shares.
 
    The Manager provides the Funds and their corresponding Portfolios with
investment advisory and administrative services. Investment decisions for the
Portfolios are made by the Manager in accordance with the investment objectives,
policies and restrictions described in this Prospectus and in the SAI.
 
   
    Shares are sold without a sales charge at the next share price calculated
after an investment is received and accepted. Shares will be redeemed at the
next share price calculated after receipt of a redemption order. See "How to
Purchase Shares" and "How to Redeem Shares."
    
 
PROSPECTUS
 
                                        8
<PAGE>   89
 
     Each shareholder in the Mileage Fund will receive American Airlines(R)
AAdvantage(R) travel awards program ("AAdvantage") miles.((1)) AAdvantage miles
will be posted monthly to each shareholder's AAdvantage account at an annual
rate of one mile for every $10 invested in the Fund. See "AAdvantage Miles."
 
INVESTMENT OBJECTIVES, POLICIES AND RISKS
 
    The investment objective and policies of each Fund and its corresponding
Portfolio are described below. Except as otherwise indicated, the investment
policies of any Fund may be changed at any time by the applicable Board to the
extent that such changes are consistent with the investment objective of the
applicable Fund. However, each Fund's investment objective may not be changed
without a majority vote of that Fund's outstanding shares, which is defined as
the lesser of (a) 67% of the shares of the applicable Fund present or
represented if the holders of more than 50% of the shares are present or
represented at the shareholders' meeting, or (b) more than 50% of the shares of
the applicable Fund (hereinafter, "majority vote"). A Portfolio's investment
objective may not be changed without a majority vote of that Portfolio's
interest holders.
 
    Each Fund has a fundamental investment policy which allows it to invest all
of its investable assets in its corresponding Portfolio. All other fundamental
investment policies and the non-fundamental investment policies of each Fund and
its corresponding Portfolio are identical. Therefore, although the following
discusses the investment policies of each Portfolio and the AMR Trust's Board of
Trustees ("AMR Trust Board"), it applies equally to each Fund and the applicable
Board.
 
INVESTMENT OBJECTIVE OF THE FUNDS -- The investment objective of each of the
Funds is to seek current income, liquidity and the maintenance of a stable $1.00
price per share. The Funds seek to achieve this objective by investing all of
their investable assets in their corresponding Portfolios, which invest in high
quality, U.S. dollar-denominated short-term obligations that have been
determined by the Manager or the AMR Trust Board to present minimal credit
risks. Portfolio investments are valued based on the amortized cost valuation
technique pursuant to Rule 2a-7 under the Investment Company Act of 1940 ("1940
Act"). See the SAI for an explanation of amortized cost. Obligations in which
the Portfolios invest generally have remaining maturities of 397 days or less,
although instruments subject to repurchase agreements and certain variable and
floating rate obligations may bear longer final maturities. The average
dollar-weighted portfolio maturity of each Portfolio will not exceed 90 days.
 
- - ---------------
 
(1) American Airlines and AAdvantage are registered trademarks of American
    Airlines, Inc.
 
                                                                      PROSPECTUS
 
                                        9
<PAGE>   90
 
   
AMERICAN AADVANTAGE MONEY MARKET FUND AND AMERICAN AADVANTAGE MONEY MARKET
MILEAGE FUND -- The Funds' corresponding Portfolio may invest in obligations
permitted to be purchased under Rule 2a-7 of the 1940 Act including, but not
limited to, (1) obligations of the U.S. Government or its agencies or
instrumentalities; (2) loan participation interests, medium-term notes, funding
agreements and asset-backed securities; (3) domestic, Yankeedollar and
Eurodollar certificates of deposit, time deposits, bankers' acceptances,
commercial paper, bank deposit notes and other promissory notes including
floating or variable rate obligations issued by U.S. or foreign bank holding
companies and their bank subsidiaries, branches and agencies; and (4) repurchase
agreements involving the obligations listed above. The Money Market Portfolio
will invest only in issuers or instruments that at the time of purchase (1) have
received the highest short-term rating by two nationally recognized statistical
rating organizations ("Rating Organizations") such as "A-1" by Standard & Poor's
and "P-1" by Moody's Investor Services, Inc.; (2) are single rated and have
received the highest short-term rating by a Rating Organization; or (3) are
unrated, but are determined to be of comparable quality by the Manager pursuant
to guidelines approved by the AMR Trust Board and subject to ratification by the
AMR Trust Board. See the SAI for definitions of the foregoing instruments and
rating systems. The Portfolio may invest in other investment companies.
    
 
   
    The Portfolio will invest more than 25% of its assets in obligations issued
by the banking industry. However, for temporary defensive purposes during
periods when the Manager believes that maintaining this concentration may be
inconsistent with the best interests of shareholders, the Portfolio may not
maintain this concentration.
    
 
    Investments in Eurodollar (U.S. dollar obligations issued outside the United
States by domestic or foreign entities) and Yankeedollar (U.S. dollar
obligations issued inside the United States by foreign entities) obligations
involve additional risks. Most notably, there generally is less publicly
available information about foreign issuers; there may be less governmental
regulation and supervision; foreign issuers may use different accounting and
financial standards; and the adoption of foreign governmental restrictions may
affect adversely the payment of principal and interest on foreign investments.
In addition, not all foreign branches of United States banks are supervised or
examined by regulatory authorities as are United States banks, and such branches
may not be subject to reserve requirements.
 
   
    Variable amount master demand notes in which the Portfolio may invest are
unsecured demand notes that permit the indebtedness thereunder to vary, and
provide for periodic adjustments in the interest rate. Because master demand
notes are direct lending arrangements between the Portfolio and the issuer, they
are not normally traded. There is no secondary market for the notes; however,
the period of time remaining until payment of principal and accrued interest can
be recovered under a variable amount master demand note generally will not
exceed seven days. To the extent this period is exceeded, the note in question
would be considered illiquid. Issuers of
    
 
PROSPECTUS
 
                                       10
<PAGE>   91
 
variable amount master demand notes must satisfy the same criteria as set forth
for other promissory notes (e.g. commercial paper). The Portfolio will invest in
variable amount master demand notes only when such notes are determined by the
Manager, pursuant to guidelines established by the AMR Trust Board, to be of
comparable quality to rated issuers or instruments eligible for investment by
the Portfolio. In determining average dollar-weighted portfolio maturity, a
variable amount master demand note will be deemed to have a maturity equal to
the longer of the period of time remaining until the next readjustment of the
interest rate or the period of time remaining until the principal amount can be
recovered from the issuer on demand.
 
   
    The Portfolio also may engage in dollar rolls or purchase or sell securities
on a "when-issued" or "forward commitment" basis. The purchase or sale of
when-issued securities enables an investor to hedge against anticipated changes
in interest rates and prices by locking in an attractive price or yield. The
price of when-issued securities is fixed at the time the commitment to purchase
or sell is made, but delivery and payment for the when-issued securities take
place at a later date, normally one to two months after the date of purchase.
During the period between purchase and settlement, no payment is made by the
purchaser to the issuer and no interest accrues to the purchaser. Such
transactions therefore involve a risk of loss if the value of the security to be
purchased declines prior to the settlement date or if the value of the security
to be sold increases prior to the settlement date. A sale of a when-issued
security also involves the risk that the other party will be unable to settle
the transaction. Dollar rolls are a type of forward commitment transaction.
Purchases and sales of securities on a forward commitment basis involve a
commitment to purchase or sell securities with payment and delivery to take
place at some future date, normally one to two months after the date of the
transaction. As with when-issued securities, these transactions involve certain
risks, but they also enable an investor to hedge against anticipated changes in
interest rates and prices. Forward commitment transactions are executed for
existing obligations, whereas in a when-issued transaction, the obligations have
not yet been issued. When purchasing securities on a when-issued or forward
commitment basis, a segregated account of liquid assets at least equal to the
value of purchase commitments for such securities will be maintained until the
settlement date.
    
 
   
AMERICAN AADVANTAGE MUNICIPAL MONEY MARKET FUND -- The Fund's corresponding
Portfolio may invest in municipal obligations issued by or on behalf of the
governments of states, territories, or possessions of the United States; the
District of Columbia; and their political subdivisions, agencies and
instrumentalities if the interest these obligations provide is generally exempt
from federal income tax. The Municipal Money Market Portfolio will invest only
in issuers or instruments that at the time of purchase (1) are guaranteed by the
U.S. Government, its agencies, or instrumentalities; (2) are secured by letters
of credit that are irrevocable and issued by banks which qualify as authorized
issuers for the Money Market Portfolio (see "American AAdvantage Money Market
Fund"); (3) are guaranteed by one or more municipal bond insurance policies that
cannot be canceled and are issued by third-party guarantors possessing the
    
 
                                                                      PROSPECTUS
 
                                       11
<PAGE>   92
 
   
highest claims-paying rating from a Rating Organization; (4) have received one
of the two highest short-term ratings from at least two Rating Organizations;
(5) are single rated and have received one of the two highest short-term ratings
from that Rating Organization; (6) have no short-term rating but the instrument
is comparable to the issuer's rated short-term debt; (7) have no short-term
rating (or comparable rating) but have received one of the top two long-term
ratings from all Rating Organizations rating the issuer or instrument; or (8)
are unrated, but are determined to be of comparable quality by the Manager
pursuant to guidelines approved by, and subject to the oversight of, the AMR
Trust Board. The Portfolio also may invest in other investment companies.
Ordinarily at least 80% of the Portfolio's net assets will be invested in
municipal obligations, the interest from which is exempt from federal income
tax. However, should market conditions warrant, the Portfolio may invest up to
20% (or for temporary defensive purposes, up to 100%) of its assets in eligible
investments for the Money Market Portfolio which are subject to federal income
tax.
    
 
    The Portfolio may invest in certain municipal obligations which have rates
of interest that are adjusted periodically according to formulas intended to
minimize fluctuations in the values of these instruments. These instruments,
commonly known as variable rate demand obligations, are long-term instruments
which allow the purchaser, at its discretion, to redeem securities before their
final maturity at par plus accrued interest upon notice (typically 7 to 30
days).
 
   
    Municipal obligations may be backed by the full taxing power of a
municipality ("general obligations"), or by the revenues from a specific project
or the credit of a private organization ("revenue obligations"). Some municipal
obligations are collateralized as to payment of principal and interest by an
escrow of U.S. Government or federal agency obligations, while others are
insured by private insurance companies, while still others may be supported by
letters of credit furnished by domestic or foreign banks. The Portfolio's
investments in municipal obligations may include fixed, variable, or floating
rate general obligations and revenue obligations (including municipal lease
obligations and resource recovery obligations); zero coupon and asset-backed
obligations; variable rate auction and residual interest obligations; tax,
revenue, or bond anticipation notes; and tax-exempt commercial paper. See the
SAI for a further discussion of the foregoing obligations. The Portfolio may
purchase or sell securities on a when-issued or forward commitment basis as
described under "American AAdvantage Money Market Fund and American AAdvantage
Money Market Mileage Fund."
    
 
    The Portfolio may invest more than 25% of the value of its total assets in
municipal obligations which are related in such a way that an economic, business
or political development or change affecting one such security would also affect
the other securities; for example, securities the interest of which is paid from
revenues of similar types of projects, or securities whose issuers are located
in the same state. As a result, the Portfolio may be subject to greater risk
compared to a fund that does not follow
 
PROSPECTUS
 
                                       12
<PAGE>   93
 
this practice. However, this risk is mitigated because it is anticipated that
most of the Portfolio's assets will be insured or backed by bank letters of
credit. Additionally, the Portfolio may invest more than 25% of the value of its
total assets in industrial development bonds which, although issued by
industrial development authorities, may be backed only by the assets and
revenues of the non-governmental users.
 
   
    The Portfolio also may invest in municipal obligations that constitute
"private activity obligations." These include obligations that finance student
loans, residential rental projects, and solid waste disposal facilities. To the
extent the Portfolio earns interest income on private activity obligations,
shareholders will be required to treat the portion of the Fund's distributions
attributable to its share of such interest as a "tax preference item" for
purposes of determining their liability for the federal alternative minimum tax
("AMT") and, as a result, may become subject to (or increase their liability
for) the AMT. Shareholders should consult their own tax advisers to determine
whether they may be subject to the AMT. The Portfolio may invest in private
activity obligations without limitation and it is anticipated that a substantial
portion of the Portfolio's assets will be invested in these obligations. As a
result, a substantial portion of the Fund's distributions may be a tax
preference item, which will reduce the net return from the Fund for taxpayers
subject to the AMT. Interest on "qualified" private activity obligations is
exempt from federal income tax.
    
 
   
AMERICAN AADVANTAGE U.S. GOVERNMENT MONEY MARKET FUND -- The Fund's
corresponding Portfolio will invest exclusively in obligations issued or
guaranteed by the U.S. Government, its agencies or instrumentalities and
repurchase agreements which are collateralized by such obligations. U.S.
Government securities include direct obligations of the U.S. Treasury (such as
Treasury bills, Treasury notes and Treasury bonds). The Fund may invest in
securities issued by the Agency for International Development, Farmers Home
Administration, Farm Credit Banks, Federal Home Loan Bank, Federal Intermediate
Credit Bank, Federal Financing Bank, Federal Land Bank, FNMA, GNMA, General
Services Administration, Rural Electrification Administration, Small Business
Administration, Tennessee Valley Authority and others. Some of these
obligations, such as those issued by the Federal Home Loan Bank and FHLMC, are
supported only by the credit of the agency or instrumentality issuing the
obligation and the discretionary authority of the U.S. Government to purchase
the agency's obligations. See the SAI for a further discussion of the foregoing
obligations. Counterparties for repurchase agreements must be approved by the
AMR Trust Board. The Portfolio may purchase or sell securities on a when-issued
or forward commitment basis as described under "American AAdvantage Money Market
Fund and American AAdvantage Money Market Mileage Fund."
    
 
   
OTHER INVESTMENT POLICIES -- In addition to the investment policies described
previously, each Portfolio also may lend its securities, enter into fully
collateralized repurchase agreements and invest in private placement offerings.
    
 
                                                                      PROSPECTUS
 
                                       13
<PAGE>   94
 
   
    SECURITIES LENDING. Each Portfolio may lend securities to broker-dealers or
other institutional investors pursuant to agreements requiring that the loans be
continuously secured by any combination of cash, securities of the U.S.
Government and its agencies and instrumentalities and approved bank letters of
credit that at all times equal at least 100% of the market value of the loaned
securities. Such loans will not be made if, as a result, the aggregate amount of
all outstanding securities loans by any Portfolio would exceed 33 1/3% of its
total assets. A Portfolio continues to receive interest on the securities loaned
and simultaneously earns either interest on the investment of the cash
collateral or fee income if the loan is otherwise collateralized. Should the
borrower of the securities fail financially, there is a risk of delay in
recovery of the securities loaned or loss of rights in the collateral. However,
the Portfolios seek to minimize this risk by making loans only to borrowers
which are deemed by the Manager to be of good financial standing and which have
been approved by the AMR Trust Board. For purposes of complying with each
Portfolio's investment policies and restrictions, collateral received in
connection with securities loans will be deemed an asset of a Portfolio to the
extent required by law. The Manager will receive compensation for administrative
and oversight functions with respect to securities lending. The amount of such
compensation will depend on the income generated by the loan of each Portfolio's
securities. The SEC has granted exemptive relief that permits the Portfolios to
invest cash collateral received from securities lending transactions in shares
of one or more private investment companies managed by the Manager. Subject to
receipt of exemptive relief from the SEC, the Portfolios also may invest cash
collateral received from securities lending transactions in shares of one or
more registered investment companies managed by the Manager. See the SAI for
further information regarding loan transactions.
    
 
    REPURCHASE AGREEMENTS. A repurchase agreement is an agreement under which
securities are acquired by a Portfolio from a securities dealer or bank subject
to resale at an agreed upon price on a later date. The acquiring Portfolio bears
a risk of loss in the event that the other party to a repurchase agreement
defaults on its obligations and the Portfolio is delayed or prevented from
exercising its rights to dispose of the collateral securities. However, the
Manager attempts to minimize this risk by entering into repurchase agreements
only with financial institutions which are deemed to be of good financial
standing and which have been approved by the AMR Trust Board. See the SAI for
more information regarding repurchase agreements.
 
   
    PRIVATE PLACEMENT OFFERINGS. Investments in private placement offerings are
made in reliance on the "private placement" exemption from registration afforded
by Section 4(2) of the Securities Act of 1933 (the "1933 Act"), and resold to
qualified institutional buyers under Rule 144A under the 1933 Act ("Section 4(2)
securities"). Section 4(2) securities are restricted as to disposition under the
federal securities laws, and generally are sold to institutional investors, such
as the Portfolios, that agree they are purchasing the securities for investment
and not with an intention to distribute to the public. Any resale by the
purchaser must be pursuant to an exempt transaction and
    
 
PROSPECTUS
 
                                       14
<PAGE>   95
 
may be accomplished in accordance with Rule 144A. Section 4(2) securities
normally are resold to other institutional investors such as the Portfolios
through or with the assistance of the issuer or dealers that make a market in
the Section 4(2) securities, thus providing liquidity. The Portfolios will not
invest more than 10% of their respective net assets in Section 4(2) securities
and other illiquid securities unless the Manager determines, by continuous
reference to the appropriate trading markets and pursuant to guidelines approved
by the AMR Trust Board, that any Section 4(2) securities held by such Portfolio
in excess of this level are at all times liquid.
 
    The AMR Trust Board and the Manager, pursuant to the guidelines approved by
the AMR Trust Board, will carefully monitor the Portfolios' investments in
Section 4(2) securities offered and sold under Rule 144A, focusing on such
important factors, among others, as: valuation, liquidity, and availability of
information. Investments in Section 4(2) securities could have the effect of
reducing a Portfolio's liquidity to the extent that qualified institutional
buyers no longer wish to purchase these restricted securities.
 
   
BROKERAGE PRACTICES -- The Portfolios normally will not incur any brokerage
commissions on their transactions because money market instruments are generally
traded on a "net" basis with dealers acting as principal for their own accounts
and without a stated commission. The price of the obligation, however, usually
includes a profit to the dealer. Obligations purchased in underwritten offerings
include a fixed amount of compensation to the underwriter, generally referred to
as the underwriter's concession or discount. No commissions or discounts are
paid when securities are purchased directly from an issuer.
    
 
ADDITIONAL INFORMATION ABOUT THE PORTFOLIOS -- As previously described,
investors should be aware that each Fund, unlike mutual funds that directly
acquire and manage their own portfolios of securities, seeks to achieve its
investment objective by investing all of its investable assets in a
corresponding Portfolio of the AMR Trust, which is a separate investment
company. Since a Fund will invest only in its corresponding Portfolio, that
Fund's shareholders will acquire only an indirect interest in the investments of
the Portfolio.
 
   
    The Manager expects, although it cannot guarantee, that the AAdvantage Trust
and the Mileage Trust will achieve economies of scale by investing in the AMR
Trust. In addition to selling their interests to the Funds, the Portfolios sell
their interests to other non-affiliated investment companies and/or other
institutional investors. All institutional investors in a Portfolio pay a
proportionate share of the Portfolio's expenses and invest in that Portfolio on
the same terms and conditions. However, other investment companies investing all
of their assets in a Portfolio are not required to sell their shares at the same
public offering price as a Fund and are allowed to charge different sales
commissions. Therefore, investors in a Fund may experience different
    
 
                                                                      PROSPECTUS
 
                                       15
<PAGE>   96
 
returns from investors in another investment company that invests exclusively in
that Fund's corresponding Portfolio.
 
   
    The Fund's investment in a Portfolio may be affected materially by the
actions of large investors in that Portfolio, if any. For example, as with all
open-end investment companies, if a large investor were to redeem its interest
in a Portfolio, that Portfolio's remaining investors could experience higher pro
rata operating expenses, thereby producing lower returns. As a result, that
Portfolio's security holdings may become less diverse, resulting in increased
risk. Institutional investors in a Portfolio that have a greater pro rata
ownership interest in the Portfolio than the Fund could have effective voting
control over the operation of that Portfolio. A material change in a Portfolio's
fundamental objective, policies and restrictions, that is not approved by the
shareholders of its corresponding Fund could require that Fund to redeem its
interest in the Portfolio. Any such redemption could result in a distribution in
kind of portfolio securities (as opposed to a cash distribution) by the
Portfolio. Should such a distribution occur, that Fund could incur brokerage
fees or other transaction costs in converting such securities to cash. In
addition, a distribution in kind could result in a less diversified portfolio of
investments for that Fund and could affect its liquidity adversely.
    
 
   
    The Portfolios' and their corresponding Funds' investment objectives and
policies are described above. See "Investment Restrictions" for a description of
their investment restrictions. The investment objective of a Fund can be changed
only with shareholder approval. The approval of a Fund and of other investors in
its corresponding Portfolio, if any, is not required to change the investment
objective, policies or limitations of that Portfolio, unless otherwise
specified. Written notice would be provided to shareholders of a Fund within
thirty days prior to any changes in its corresponding Portfolio's investment
objective. If the investment objective of a Portfolio changes and the
shareholders of its corresponding Fund do not approve a parallel change in that
Fund's investment objective, the Fund would seek an alternative investment
vehicle or the Manager would actively manage the Fund.
    
 
    See "Management and Administration of the Trusts" for a complete description
of the investment management fee and other expenses associated with a Fund's
investment in its corresponding Portfolio. This Prospectus and the SAI contain
more detailed information about each Fund and its corresponding Portfolio,
including information related to (1) the investment objective, policies and
restrictions of each Fund and its corresponding Portfolio, (2) the Board of
Trustees and officers of the AAdvantage Trust, the Mileage Trust and the AMR
Trust, (3) brokerage practices, (4) the Funds' shares, including the rights and
liabilities of its shareholders, (5) additional performance information,
including the method used to calculate yield and total return, and (6) the
determination of the value of each Fund's shares.
 
PROSPECTUS
 
                                       16
<PAGE>   97
 
INVESTMENT RESTRICTIONS
 
    The following fundamental investment restrictions and the non-fundamental
investment restriction are identical for each Fund and its corresponding
Portfolio. Therefore, although the following discusses the investment
restrictions of each Portfolio and the AMR Trust Board, it applies equally to
each Fund and its respective Board. The following fundamental investment
restrictions may be changed with respect to a particular Fund by the majority
vote of that Fund's outstanding shares or with respect to a Portfolio by the
majority vote of that Portfolio's interest holders. No Portfolio may:
 
   
    - Invest more than 5% of its total assets (taken at market value) in
      securities of any one issuer, other than obligations issued by the U.S.
      Government, its agencies and instrumentalities, or purchase more than 10%
      of the voting securities of any one issuer, with respect to 75% of a
      Portfolio's total assets. In addition, although not a fundamental
      investment restriction and therefore subject to change without shareholder
      vote, the Money Market Portfolio and the U.S. Government Money Market
      Portfolio apply this restriction with respect to 100% of their assets.
    
 
   
    - Invest more than 25% of its total assets in the securities of companies
      primarily engaged in any one industry, provided that: (i) this limitation
      does not apply to obligations issued or guaranteed by the U.S. Government,
      its agencies and instrumentalities; (ii) municipalities and their agencies
      and authorities are not deemed to be industries; and (iii) financial
      service companies are classified according to the end users of their
      services (for example, automobile finance, bank finance, and diversified
      finance will be considered separate industries). With respect to the Money
      Market Portfolio, this restriction does not apply to the banking industry.
    
 
    The following non-fundamental investment restriction may be changed with
respect to a particular Fund by a vote of a majority of its respective Board or
with respect to a Portfolio by a vote of a majority of the AMR Trust Board: no
Portfolio may invest more than 10% of its net assets in illiquid securities,
including time deposits and repurchase agreements that mature in more than seven
days.
 
    The above percentage limits are based upon asset values at the time of the
applicable transaction; accordingly, a subsequent change in asset values will
not affect a transaction that was in compliance with the investment restrictions
at the time such transaction was effected. See the SAI for other investment
limitations.
 
                                                                      PROSPECTUS
 
                                       17
<PAGE>   98
 
YIELDS AND TOTAL RETURNS
 
   
    From time to time the Platinum Class of the Funds may advertise its "current
yield" and "effective yield." Both yield figures are based on historical
earnings and are not intended to indicate future performance. The current yield
refers to the investment income generated by an investment over a seven
calendar-day period (which period will be stated in the advertisement). This
yield is then annualized by assuming the amount of investment income generated
during that week is earned each week over a one-year period, and is shown as a
percentage of the investment. The effective yield is calculated similarly but,
when annualized, the investment income earned is assumed to be reinvested. The
effective yield will be slightly higher than the current yield because of the
compounding effect of this assumed reinvestment. The Municipal Money Market Fund
also may quote "tax equivalent yields," which show the taxable yields a
shareholder would have to earn before federal income taxes to equal this Fund's
tax-exempt yields. The tax equivalent yield is calculated by dividing the Fund's
tax-exempt yield by the result of one minus a stated federal income tax rate. If
only a portion of the Fund's income was tax-exempt, only that portion is
adjusted in the calculation. As stated earlier, the Fund considers interest on
private activity obligations to be exempt from federal income tax. Total return
quotations advertised by the Funds may reflect the average annual compounded (or
aggregate compounded) rate of return during the designated time period based on
a hypothetical initial investment and the redeemable value of that investment at
the end of the period. The Funds will at times compare their performance to
applicable published indices, and also may disclose their performance as ranked
by certain ranking entities. Each class of a Fund has different expenses which
will impact its performance. See the SAI for more information about the
calculation of yields and total returns.
    
 
MANAGEMENT AND ADMINISTRATION OF THE TRUSTS
 
   
FUND MANAGEMENT AGREEMENT -- The AAdvantage Trust's Board and the Mileage
Trust's Board have general supervisory responsibility over their respective
Trust's affairs. The Manager provides or oversees all administrative, investment
advisory and portfolio management services for the AAdvantage Trust pursuant to
a Management Agreement, dated April 3, 1987, as amended on July 25, 1997,
together with the Administrative Services Agreement described below. The Manager
provides or oversees all administrative, investment advisory and portfolio
management services for the Mileage Trust pursuant to a Management Agreement,
dated October 1, 1995 as amended November 21, 1997. The AMR Trust and the
Manager also entered into a Management Agreement dated, October 1, 1995, as
amended July 25, 1997, which obligates the Manager to provide or oversee all
administrative, investment advisory and portfolio management services for the
AMR Trust. The Manager, located at 4333 Amon Carter Boulevard, MD 5645, Fort
Worth, Texas 76155, is a wholly owned subsidiary of AMR Corporation ("AMR"), the
parent company of American
    
 
PROSPECTUS
 
                                       18
<PAGE>   99
 
   
Airlines, Inc., and was organized in 1986 to provide investment management,
advisory, administrative and asset management consulting services. The Manager
serves as the sole investment adviser to the Portfolios. As of December 31,
1997, the Manager had assets under management totaling approximately $
billion, including approximately $     billion under active management and
$     billion as named fiduciary or fiduciary adviser. Of the total,
approximately $     billion of assets are related to AMR. American Airlines,
Inc. is not responsible for investments made in the American AAdvantage Funds or
the American AAdvantage Mileage Funds.
    
 
   
    The Manager provides the AAdvantage Trust, the Mileage Trust and the AMR
Trust with office space, office equipment and personnel necessary to manage and
administer the Trusts' operations. This includes complying with reporting
requirements; corresponding with shareholders; maintaining internal bookkeeping,
accounting and auditing services and records; and supervising the provision of
services to the Trusts by third parties. The Manager oversees each Portfolio's
participation in securities lending activities and any actions taken by a
securities lending agent in connection with those activities to ensure
compliance with all applicable regulatory and investment guidelines. The Manager
also develops the investment programs for each Portfolio.
    
 
   
    The Manager bears the expense of providing the above services. As
compensation for providing the Portfolios with advisory services, the Manager
receives from the AMR Trust an annualized advisory fee that is calculated and
accrued daily, equal to 0.15% of the net assets of the Portfolios. To the extent
that a Fund invests all of its investable assets in its corresponding Portfolio,
the Manager receives no advisory fee from the AAdvantage Trust or the Mileage
Trust. The Manager receives compensation in connection with securities lending
activities. If a Portfolio lends its portfolio securities and receives cash
collateral from the borrower, the Manager may receive up to 25% of the net
annual interest income (the gross interest earned by the investment less the
amount paid to the borrower as well as related expenses) received from the
investment of such cash. If a borrower posts collateral other than cash, the
borrower will pay to the lender a loan fee. The Manager may receive up to 25% of
the loan fees posted by borrowers. Currently, the Manager receives 10% of the
net annual interest income from the investment of cash collateral or 10% of the
loan fees posted by borrowers. The fees received by the Manager from the AMR
Trust are payable quarterly in arrears. In addition, the Manager is compensated
through the Administrative Services Agreement as described below for other
services provided.
    
 
    Each Management Agreement will continue in effect provided that annually
such continuance is specifically approved by a vote of the applicable Board
including the affirmative votes of a majority of the Trustees of each Board who
are not parties to the Management Agreement or "interested persons" as defined
in the 1940 Act of any such party ("Independent Trustees"), cast in person at a
meeting called for the purpose of considering such approval, or by the vote of a
Fund's shareholders or a Portfolio's
 
                                                                      PROSPECTUS
 
                                       19
<PAGE>   100
 
interest holders. A Management Agreement may be terminated with respect to a
Fund or a Portfolio at any time, without penalty, by a majority vote of
outstanding Fund shares or Portfolio interests on sixty (60) days' written
notice to the Manager, or by the Manager, on sixty (60) days' written notice to
the AAdvantage Trust, the Mileage Trust or the AMR Trust. A Management Agreement
will automatically terminate in the event of its "assignment" as defined in the
1940 Act.
 
   
    The AAdvantage Trust and the Mileage Trust each is responsible for expenses
not otherwise assumed by the Manager, including the following expenses: audits
by independent auditors; transfer agency, custodian, dividend disbursing agent
and shareholder recordkeeping services; taxes, if any, and the preparation of
each Fund's tax returns; interest; costs of Trustee and shareholder meetings;
printing and mailing prospectuses and reports to existing shareholders; fees for
filing reports with regulatory bodies and the maintenance of the Funds'
existence; legal fees; fees to federal and state authorities for the
registration of shares; fees and expenses of Independent Trustees; insurance and
fidelity bond premiums; and any extraordinary expenses of a nonrecurring nature.
    
 
   
    A majority of the Independent Trustees of each Board has adopted written
procedures reasonably appropriate to deal with potential conflicts of interest
between the AAdvantage Trust or the Mileage Trust and the AMR Trust.
    
 
ADMINISTRATIVE SERVICES PLAN -- The Manager has entered into separate
Administrative Services Plans with the AAdvantage Trust and the Mileage Trust
which obligate the Manager to provide the Platinum Class with administrative
services either directly or through the various broker-dealers that offer
Platinum Class shares. These services include, but are not limited to, the
payment of fees for record maintenance, forwarding shareholder communications to
the shareholders and aggregating and processing orders for the purchase and
redemption of Platinum Class shares. As compensation for these services, the
Manager receives an annualized fee of up to 0.50% and 0.55% of the net assets of
the Platinum Class of the AAdvantage Funds and the Mileage Fund, respectively.
The fee is payable quarterly in arrears.
 
   
DISTRIBUTION PLAN -- The AAdvantage Trust and the Mileage Trust have each
adopted a Platinum Class distribution plan (the "Plans") pursuant to Rule 12b-1
under the 1940 Act, which will continue in effect so long as approved at least
annually by a majority of the applicable Board's Trustees, including the
affirmative votes of a majority of the Independent Trustees of the applicable
Board, cast in person at a meeting called for the purpose of considering such
approval, or by the vote of shareholders of the Platinum Class. The Plans may be
terminated with respect to a particular Platinum Class at any time, without
payment of any penalty, by a vote of a majority of the Independent Trustees of
the applicable Board or by a vote of a majority of the outstanding voting
securities of that class.
    
 
PROSPECTUS
 
                                       20
<PAGE>   101
 
   
    The Plans provide that each Platinum Class will pay 0.25% per annum of its
average daily net assets to the Manager (or another entity approved by the
applicable Board) for distribution-related services. The fee will be payable
quarterly in arrears without regard to whether the amount of the fee is more or
less than the actual expenses incurred in a particular quarter by the entity for
the services provided pursuant to the Plans. The Plans authorize the Manager, or
any other entity approved by the applicable Board, to spend Rule 12b-1 fees on
any activities or expenses intended to result in the sale or servicing of
Platinum Class shares including but not limited to, advertising, expenses of
various broker-dealers relating to selling efforts, transfer agency fees and the
preparation and distribution of advertising material and sales literature. In
addition, the Mileage Fund's Plan authorizes expenses incurred in connection
with participation in the AAdvantage program.
    
 
ALLOCATION OF FUND EXPENSES -- Expenses of each Fund generally are allocated
equally among the shares of that Fund, regardless of class. However, certain
expenses approved by the applicable Board will be allocated solely to the class
to which they relate.
 
PRINCIPAL UNDERWRITER -- BROKERS TRANSACTION SERVICES, INC. ("BTS"), 7001
Preston Road, Dallas, Texas, 75205 serves as the principal underwriter of the
AAdvantage Trust and the Mileage Trust.
 
   
CUSTODIAN AND TRANSFER AGENT -- STATE STREET BANK & TRUST COMPANY, Boston,
Massachusetts, serves as custodian for the Portfolios and the Funds and as
transfer agent for the Platinum Class.
    
 
INDEPENDENT AUDITOR -- The independent auditor for the Funds and the AMR Trust
is ERNST & YOUNG LLP, Dallas, Texas.
 
AADVANTAGE(R) MILES
 
    The AAdvantage program offers the opportunity to obtain free upgrades and
travel awards on American Airlines and AAdvantage airline participants, as well
as upgrades and discounts on car rentals and hotel accommodations. For more
information about the AAdvantage program, call American Airlines at (800)
433-7300.
 
    AAdvantage miles will be posted monthly in arrears to each shareholder's
AAdvantage account based on the shareholder's average daily account balance
during the previous month. Miles are posted at an annual rate of one mile per
$10 maintained in the Mileage Fund. Mileage is calculated on the average daily
balance and posted monthly. The average daily balance is calculated by adding
each day's balance and dividing by the number of days in the month. For example,
the average daily balance on a $50,000 account funded on the 16th day of a month
having 30 days (and
 
                                                                      PROSPECTUS
 
                                       21
<PAGE>   102
 
maintained at that balance through the end of the month) would be $25,000.
Mileage received for that month would be 208 miles. If the same balance were
maintained through the next month, the average daily balance would be $50,000,
and the mileage would be 417 miles that month and every month the $50,000
investment was maintained in the Mileage Fund. These miles appear on subsequent
AAdvantage program statements.
 
    In the case of Trust Accounts, AAdvantage miles will be posted only in a
trustee's individual name, and not in the name of the Trust Account. Before
investing in a Fund, trustees of the Trust Accounts should consult their own
legal and tax advisers as to the tax effect of this arrangement and whether this
arrangement is consistent with their legal duties as trustees. American Airlines
has informed the Funds that in administering an AAdvantage member's AAdvantage
account, it shall not be required to distinguish between AAdvantage miles
accumulated by the individual in his/her capacity as trustee to a Trust Account
from AAdvantage miles accumulated in an individual capacity or from other
sources.
 
    The Manager reserves the right to discontinue the posting of AAdvantage
miles or to change the mileage calculation at any time upon notice to
shareholders. See also "Dividends and Tax Matters."
 
    American Airlines may find it necessary to change AAdvantage program rules,
regulations, travel awards and special offers at any time. This means that
American Airlines may initiate changes impacting, for example, participant
affiliations, rules for earning mileage credit, mileage levels and rules for the
use of travel awards, continued availability of travel awards, blackout dates
and limited seating for travel awards, and the features of special offers.
American Airlines reserves the right to end the AAdvantage program with six
months' notice. AAdvantage travel awards, mileage accrual and special offers are
subject to governmental regulations.
 
HOW TO PURCHASE SHARES
 
   
    Platinum Class shares are offered on a continuous basis at net asset value
through selected financial services firms. The Platinum Class has established a
minimum initial investment of $1,000 and $100 minimum for subsequent
investments, but these minimums may be changed at any time at the AAdvantage
Trust's or the Mileage Trust's discretion.
    
 
   
    An order to purchase Platinum Class shares received by wire transfer in the
form of federal funds will be effected at the next determined net asset value.
    
 
PROSPECTUS
 
                                       22
<PAGE>   103
 
    Orders for purchase accompanied by a check or other negotiable bank draft
will be accepted and effected as of 3:00 p.m. Eastern time on the next Business
Day following receipt and such shares will receive the dividend for the Business
Day following the day the purchase is effected. If an order is accompanied by a
check drawn on a foreign bank, funds must normally be collected from such check
before shares will be purchased. The AAdvantage Trust and the Mileage Trust
reserve the right to reject any order for the purchase of shares and to limit or
suspend, without prior notice, the offering of shares.
 
   
    Shares are offered and orders are accepted for the Money Market Fund, and
the Mileage Fund until 3:00 p.m. Eastern time, or the close of the Exchange
(whichever comes first) Monday through Friday, excluding the following business
holidays: New Year's Day, Martin Luther King's Birthday, President's Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day,
Thanksgiving Day and Christmas Day ("Business Day"). Shares are offered and
orders are accepted for the U.S. Government Money Market Fund until 2:00 p.m.
Eastern time, or the close of the Exchange (whichever comes first) on each
Business Day and for the Municipal Money Market Fund until 12:00 p.m. Eastern
time, or close of the Exchange (whichever comes first) on each Business Day.
These purchases will receive that day's dividend.
    
 
    Firms provide varying arrangements for their clients with respect to the
purchase and redemption of Platinum Class shares and the confirmation thereof
and may arrange with their clients for other investment or administrative
services. Such firms are responsible for the prompt transmission of purchase and
redemption orders. Some firms may establish higher or lower minimum investment
requirements than set forth above. Such firms may independently establish and
charge additional amounts to their clients for their services, which charges
would reduce their clients' yield or return. Firms also may hold Platinum Class
shares in nominee or street name as agent for and on behalf of their clients. In
such instances, the transfer agent will have no information with respect to or
control over the accounts of specific shareholders. Such shareholders may obtain
access to their accounts and information about their accounts only from their
firm. Certain of these firms may receive compensation from the Manager for
recordkeeping and other expenses relating to these nominee accounts. In
addition, certain privileges with respect to the purchase and redemption of
shares (such as check writing or a debit card) may not be available through such
firms or may only be available subject to certain conditions or limitations.
Some firms may participate in a program allowing them access to their clients'
accounts for servicing, including, without limitation, transfers of registration
and dividend payee changes, and may perform functions such as generation of
confirmation statements and disbursements of cash dividends.
 
                                                                      PROSPECTUS
 
                                       23
<PAGE>   104
 
HOW TO REDEEM SHARES
 
    Shareholders should contact the firm through which their shares were
purchased for redemption instructions. Shares of a Fund may be redeemed by
telephone, by writing a check, by pre-authorized automatic redemption or by mail
on any Business Day. Shares will be redeemed at the net asset value next
calculated after the applicable Fund has received and accepted the redemption
request. Proceeds from a redemption of shares purchased by check or
pre-authorized automatic purchase may be withheld until the funds have cleared,
which may take up to 15 days. Although the Funds intend to redeem shares in
cash, each Fund reserves the right to pay the redemption price in whole or in
part by a distribution of readily marketable securities held by the applicable
Fund's corresponding Portfolio. See the SAI for further information concerning
redemptions in kind.
 
   
    Firms may charge a fee for wire redemptions to cover transaction costs.
Redemption proceeds generally will be sent within one Business Day. However, if
making immediate payment could affect a Fund adversely, it may take up to seven
days to send payment.
    
 
    To ensure acceptance of a redemption request, be sure to adhere to the
following procedures.
 
   
REDEEMING BY CHECK -- Upon request, shareholders will be provided with drafts to
be drawn on the shareholder's Fund account ("Redemption Checks"). Redemption
Checks may be made payable to the order of any person for an amount not less
than $250 and not more than $5 million. When a Redemption Check is presented for
payment, a sufficient number of full and fractional shares in the shareholder's
account will be redeemed at the next determined net asset value to cover the
amount of the Redemption Check. This will enable the shareholder to continue
earning dividends until the Fund receives the Redemption Check. A shareholder
wishing to use this method of redemption must complete and file an account
application which is available from the Funds or firm through which shares were
purchased. Redemption Checks should not be used to close an account since the
account normally includes accrued but unpaid dividends. The Funds reserve the
right to terminate or modify this privilege at any time. This privilege may not
be available through some firms that distribute shares of the Funds. In
addition, firms may impose minimum balance requirements in order to obtain this
feature. Firms also may impose fees on investors for this privilege or, if
approved by the Funds, establish variations on minimum check amounts.
    
 
   
    Unless only one signature is authorized on the account application,
Redemption Checks must be signed by all shareholders. Any change in the
signature authorization must be made by written notice to the firm. Shares
purchased by check or through an Automated Clearing House ("ACH") transaction
may not be redeemed by
    
 
PROSPECTUS
 
                                       24
<PAGE>   105
 
Redemption Check until the shares have been on the Fund's books for at least 15
days. The Funds reserve the right to terminate or modify this privilege at any
time.
 
   
    The Funds may refuse to honor Redemption Checks whenever the right of
redemption has been suspended or postponed, or whenever the account is otherwise
impaired. A $15 service fee will be charged when a Redemption Check is presented
to redeem Fund shares in excess of the value of that Fund account or for an
amount less than $250 or when a Redemption Check is presented that would require
redemption of shares that were purchased by check or ACH transaction within 15
days. A fee of $12 will be charged when "stop payment" of a Redemption Check is
requested. Firms may charge different service fees in place of or in addition to
these fees.
    
 
PRE-AUTHORIZED AUTOMATIC REDEMPTIONS -- Shareholders purchasing through some
firms can arrange to have a pre-authorized amount ($100 or more) redeemed from
their shareholder account and automatically deposited into a bank account on one
or more specified day(s) of each month. For more information regarding
pre-authorized automatic redemptions, contact your firm.
 
FULL REDEMPTIONS -- Unpaid dividends credited to an account up to the date of
redemption of all shares of a Fund generally will be paid at the time of
redemption.
 
VALUATION OF SHARES
 
   
    The net asset value of each share (share price) of the Funds is determined
as of the close of the Exchange, generally 4:00 p.m. Eastern time, on each
Business Day. The net asset value of Platinum Class Shares of the Funds will be
determined based on a pro rata allocation of the Fund's corresponding
Portfolio's investment income, expenses and total capital gains and losses. The
allocation will be based on comparative net asset value at the beginning of the
day except for expenses related solely to one class of shares ("Class Expenses")
which will be borne only by the appropriate class of shares. Because of Class
Expenses, the net income attributable to and the dividends payable may be
different for each class of shares.
    
 
    Obligations held by the Portfolios are valued in accordance with the
amortized cost method, which is designed to enable those Portfolios and their
corresponding Funds to maintain a consistent $1.00 per share net asset value.
The amortized cost method is described in the SAI.
 
                                                                      PROSPECTUS
 
                                       25
<PAGE>   106
 
DIVIDENDS AND TAX MATTERS
 
   
    Dividends paid on each class of a Fund's shares are calculated at the same
time and in the same manner. All of each Fund's net investment income and net
short-term capital gain, if any, generally will be declared as dividends on each
Business Day immediately prior to the determination of the net asset value.
Dividends generally are paid on the first day of the following month. A Fund's
net investment income attributable to the Platinum Class consists of that class'
pro rata share of the Fund's share of interest accrued and discount earned on
its corresponding Portfolio's securities, less amortization of premium, and the
estimated expenses of both the Portfolio and the Fund attributable to the
Platinum Class. The Portfolios do not expect to realize net capital gain,
therefore the Funds do not foresee paying any capital gain distributions. If any
Fund (either directly or indirectly through its corresponding Portfolio)
incurred or anticipated any unusual expenses, loss or depreciation that would
adversely affect its net asset value or income for a particular period, the
Board would at that time consider whether to adhere to the dividend policy
described above or to revise it in the light of the then prevailing
circumstances.
    
 
   
    Unless a shareholder elects otherwise on the account application, all
dividends on a Fund's Platinum Class shares will be automatically paid in
additional Platinum Class shares of that Fund. However, a shareholder may choose
to have dividends paid in cash. An election may be changed at any time by
delivering written notice to your firm at least ten days prior to the payment
date for a dividend.
    
 
    Each Fund is treated as a separate corporation for federal income tax
purposes and intends to continue to qualify for treatment as a regulated
investment company under the Internal Revenue Code of 1986, as amended. In each
taxable year that a Fund so qualifies, the Fund (but not its shareholders) will
be relieved of federal income tax on that part of its investment company taxable
income (generally, taxable net investment income plus any net short-term capital
gain) that it distributed to its shareholders. However, a Fund will be subject
to a nondeductible 4% excise tax to the extent that it fails to distribute by
the end of any calendar year substantially all of its ordinary income for that
calendar year and its net capital gain for the one-year period ending on October
31 of that year, plus certain other amounts. For these and other purposes,
dividends declared by a Fund in December of any year and payable to shareholders
of record on a date in that month will be deemed to have been paid by the Fund
and received by the shareholders on December 31 of that year if they are paid by
the Fund during the following January. Each Portfolio has received a ruling from
the Internal Revenue Service that it is classified for federal income tax
purposes as a partnership; accordingly, no Portfolio is subject to federal
income tax.
 
   
    Dividends from a Fund's investment company taxable income are taxable to its
shareholders as ordinary income to the extent of the Fund's earnings and
profits, whether received in cash or paid in additional Platinum Class shares.
Distributions by
    
 
PROSPECTUS
 
                                       26
<PAGE>   107
 
   
the Municipal Money Market Fund that it designates as "exempt-interest
dividends" generally may be excluded from gross income by its shareholders. If
the Municipal Money Market Portfolio earns taxable income from any of its
investments, the Municipal Money Market Fund's share of that income will be
distributed to its shareholders as a taxable dividend. To the extent that
Portfolio invests in certain private activity obligations, that Fund's
shareholders will be required to treat a portion of its dividends as a "tax
preference item" in determining their liability for the AMT. Exempt-interest
dividends also may be subject to tax under state and local income tax laws.
Because some states exempt from income tax the interest on their own obligations
and obligations of governmental agencies and municipalities in the state,
shareholders will receive tax information each year regarding the Municipal
Money Market Fund's exempt-interest income by state. Interest on indebtedness
incurred or continued by a shareholder to purchase or carry shares of that Fund
is not deductible.
    
 
    Each Fund notifies its shareholders following the end of each calendar year
of the amounts of dividends paid (or deemed paid) that year. The notice sent by
the Municipal Money Market Fund specifies the amounts of exempt-interest
dividends (and the portion thereof, if any, that is a tax preference item for
purposes of the AMT) and any taxable dividends. The Mileage Fund's notice also
might include in taxable dividends a nominal amount reflecting the value of
AAdvantage Miles credited to the shareholders' accounts, which are deemed by the
Internal Revenue Service to constitute taxable distributions by the Fund. Each
Fund is required to withhold 31% of all taxable dividends payable to any
individuals and certain other non-corporate shareholders who do not provide the
Fund with a correct taxpayer identification number or who otherwise are subject
to back-up withholding.
 
    The foregoing is only a summary of some of the important tax considerations
generally affecting the Funds and their shareholders. Prospective investors are
urged to consult their own tax advisers regarding specific questions as to the
effect of federal, state or local income taxes on any investment in the
AAdvantage Trust or the Mileage Trust or any tax consequences as a result of the
receipt of AAdvantage miles. For further tax information, see the SAI.
 
GENERAL INFORMATION
 
   
    The AAdvantage Trust currently is comprised of ten separate investment
portfolios and the Mileage Trust currently is comprised of nine separate
investment portfolios. Each AAdvantage Fund included in this Prospectus is
comprised of three classes of shares. The Mileage Fund is comprised of two
classes of shares. Shares of each AAdvantage Fund and each Mileage Fund can be
issued in an unlimited number. Each AAdvantage Fund and Mileage Fund share
represents an equal proportionate beneficial interest in that Fund and is
entitled to one vote. Only shares of a particular
    
 
                                                                      PROSPECTUS
 
                                       27
<PAGE>   108
 
class may vote on matters affecting that class. Only shares of a particular Fund
may vote on matters affecting that Fund. All shares of a Trust vote on matters
affecting that Trust as a whole. Share voting rights are not cumulative, and
shares have no preemptive or conversion rights. Shares of the AAdvantage Trust
and the Mileage Trust are nontransferable.
 
    On most issues subjected to a vote of a Portfolio's interest holders, as
required by the 1940 Act, its corresponding Fund will solicit proxies from its
shareholders and will vote its interest in the Portfolio in proportion to the
votes cast by the Fund's shareholders. Because a Portfolio interest holder's
votes are proportionate to its percentage interests in that Portfolio, one or
more other Portfolio investors could, in certain instances, approve an action
against which a majority of the outstanding voting securities of its
corresponding Fund had voted. This could result in that Fund's redeeming its
investment in its corresponding Portfolio, which could result in increased
expenses for that Fund. Whenever the shareholders of a Fund are called to vote
on matters related to its corresponding Portfolio, the Board shall vote shares
for which they receive no voting instructions in the same proportion as the
shares for which they do receive voting instructions. Any information received
from a Portfolio in the Portfolio's report to shareholders will be provided to
the shareholders of its corresponding Fund.
 
    As Massachusetts business trusts, the AAdvantage Trust and the Mileage Trust
are not obligated to conduct annual shareholder meetings. However, the Trusts
will hold special shareholder meetings whenever required to do so under the
federal securities laws or their Declarations of Trust or By-Laws. Trustees of
either Trust can be removed by a shareholder vote at special shareholder
meetings.
 
SHAREHOLDER COMMUNICATIONS
 
   
    Shareholders will receive periodic reports, including annual and semi-annual
reports, which will include financial statements showing the results of the
Funds' operations and other information. The financial statements of the Funds
and the AMR Trust will be audited by Ernst & Young LLP, independent auditor, at
least annually. Shareholder inquiries and requests for information regarding the
other investment companies which also invest in the AMR Trust should be made by
contacting your firm or by calling (800) 388-3344 or by writing to the Funds at
P.O. Box 619003, MD 5645, Dallas/Fort Worth Airport, Texas 75261-9003.
    
 
    NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND IN SALES
LITERATURE SPECIFICALLY APPROVED BY OFFICERS OF THE AADVANTAGE TRUST AND THE
MILEAGE TRUST FOR USE IN CONNECTION WITH THE OFFER OF ANY FUND'S SHARES, AND, IF
GIVEN OR MADE, SUCH OTHER INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON
AS HAVING BEEN AUTHORIZED BY THE FUNDS. THIS PROSPECTUS DOES NOT CONSTITUTE AN
OFFER IN ANY JURISDICTION IN WHICH, OR TO ANY PERSON TO WHOM, SUCH OFFERING MAY
NOT LAWFULLY BE MADE.
 
PROSPECTUS
 
                                       28
<PAGE>   109
 
   
American AAdvantage Funds and American AAdvantage Mileage Funds are registered
service marks of AMR Corporation. Mileage Class, American AAdvantage Money
Market Fund and PlanAhead Class are registered service marks and Platinum Class,
American AAdvantage Money Market Mileage Fund, American AAdvantage Municipal
Money Market Fund and American AAdvantage U.S. Government Money Market Fund are
service marks of AMR Investment Services, Inc.
    
 
                                                                      PROSPECTUS
 
                                       29
<PAGE>   110
 
   
                        [AMERICAN ADVANTAGE FUNDS LOGO]
    
                                P.O. BOX 619003
                        DALLAS/FORT WORTH AIRPORT, TEXAS
                                   75261-9003
 
                               Available through
 
                          [SOUTHWEST SECURITIES LOGO]
 
                          1201 Elm Street, Suite 3500
                                 Dallas, Texas
                                     75270
 
                                 (800) 973-7977
<PAGE>   111
                      STATEMENT OF ADDITIONAL INFORMATION

                          AMERICAN AADVANTAGE FUNDS(R)
                     AMERICAN AADVANTAGE MILEAGE FUNDS(sm)

                            -- PLATINUM CLASS(sm) --
   

                                 MARCH 1, 1998

      The American AAdvantage Money Market Fund(sm) (the "Money Market Fund"),
the American AAdvantage Municipal Money Market Fund(sm) (the "Municipal Money
Market Fund"), and the American AAdvantage U.S. Government Money Market
Fund(sm), formerly the American AAdvantage U.S. Treasury Money Market Fund (the
"U.S. Government Money Market Fund"), are three separate investment portfolios
of the American AAdvantage Funds (the "AAdvantage Trust"). The American
AAdvantage Money Market Mileage Fund (the "Mileage Fund") is a separate
investment portfolio of the American AAdvantage Mileage Funds (the "Mileage
Trust") (individually, a "Fund" and, collectively, the "Funds").  The
AAdvantage Trust and the Mileage Trust (collectively the "Trusts") are
open-end, diversified management investment companies.  Each Fund consists of
multiple classes of shares designed to meet the needs of different groups of
investors.  This Statement of Additional Information ("SAI") relates only to
the Platinum Class of the Funds.
    

      Each Fund seeks its investment objective by investing all of its
investable assets in a corresponding portfolio (individually, a "Portfolio"
and, collectively, the "Portfolios") of the AMR Investment Services Trust ("AMR
Trust") that has a similar name and an identical investment objective to the
investing Fund.

   
      This SAI should be read in conjunction with the Platinum Class prospectus
dated March 1, 1998 ("Prospectus"), a copy of which may be obtained without
charge by calling (800) 388-3344.
    

      This SAI is not a prospectus and is authorized for distribution to
prospective investors only if preceded or accompanied by a current Prospectus.


                            INVESTMENT RESTRICTIONS

      Each Fund has the following fundamental investment policy that enables it
to invest in a corresponding Portfolio of the AMR Trust:

            Notwithstanding any other limitation, the Fund may invest all of
            its investable assets in an open-end management investment company
            with substantially the same investment objectives, policies and
            limitations as the Fund.  For this purpose, "all of the Fund's
            investable assets" means that the only investment securities that
            will be held by the Fund will be the Fund's interest in the
            investment company.

      All other fundamental investment policies and the non-fundamental
policies of each Fund and its corresponding Portfolio are identical.
Therefore, although the following discusses the investment policies of each
Portfolio and the AMR Trust's Board of Trustees ("AMR Trust Board"), it applies
equally to each Fund and the AAdvantage Trust's Board of Trustees ("AAdvantage
Board") and the Mileage Trust's Board of Trustees ("Mileage Trust Board"), as
applicable.

      In addition to the investment limitations noted in the Prospectus, the
following seven restrictions have been adopted by each Portfolio and may be
changed with respect to any Portfolio only by the majority vote of that
Portfolio's outstanding interests. "Majority of the outstanding voting
securities" under the Investment Company Act of 1940, as amended (the "1940
Act"), and as used herein means, with respect to the Portfolio, the lesser of
(a) 67% of the interests of the Portfolio present at the meeting if the holders
of more than 50% of the interests are present and represented at the interest
holders' meeting or (b) more than 50% of the interests of the Portfolio.
Whenever a Fund is requested to vote on a change in the investment restrictions
of its corresponding Portfolio, that Fund will hold a meeting of its
shareholders and will cast its votes as instructed by its shareholders.  The
percentage of a Fund's votes representing that Fund's shareholders not voting
will be voted by the AAdvantage Board and the Mileage Trust Board in the same
proportion as those Fund shareholders who do, in fact, vote.
<PAGE>   112
No Portfolio may:

      1.     Purchase or sell real estate or real estate limited partnership 
      interests, provided, however, that the Portfolio may invest in securities
      secured by real estate or interests therein or issued by companies which
      invest in real estate or interests therein when consistent with the other
      policies and limitations described in the Prospectus.

   
      2.     Purchase or sell commodities (including direct interests and/or 
      leases in oil, gas or minerals) or commodities contracts, except with
      respect to forward foreign currency exchange contracts, foreign currency
      futures contracts and  when-issued  securities when consistent with the
      other policies and limitations described in the Prospectus.
    

      3.     Engage in the business of underwriting securities issued by 
      others except to the extent that, in connection with the disposition of
      securities, the Portfolio may be deemed an underwriter under federal
      securities law.

      4.     Make loans to any person or firm, provided, however, that the 
      making of a loan shall not be construed to include (i) the acquisition
      for investment of bonds, debentures, notes or other evidences of
      indebtedness of any corporation or government which are publicly
      distributed or (ii) the entry into repurchase agreements and further
      provided, however, that each Portfolio may lend its investment securities
      to broker-dealers or other institutional investors in accordance with the
      guidelines stated in the Prospectus.

   
      5.     Purchase from or sell portfolio securities to its officers, 
      Trustees or other "interested persons" of the AMR Trust, as defined in
      the  1940 Act, including its investment advisers and their affiliates,
      except as permitted by the 1940 Act and exemptive rules or orders
      thereunder.
    

      6.     Issue senior securities except that the Portfolio may engage in 
      when-issued and forward commitment transactions.

      7.     Borrow money, except from banks or through reverse repurchase 
      agreements for temporary purposes in an aggregate amount not to exceed
      10% of the value of its total assets at the time of borrowing.  In
      addition, although not a fundamental policy, the Portfolios intend to
      repay any money borrowed before any additional portfolio securities are
      purchased.  See "Other Information" for a further description regarding
      reverse repurchase agreements.

      The following non-fundamental investment restriction applies to each
Portfolio and may be changed with respect to a Portfolio by a majority vote of
the AMR Trust Board: no Portfolio may purchase securities on margin, effect
short sales (except that the Portfolio may obtain such short-term credits as
may be necessary for the clearance of purchases or sales of securities) or
purchase or sell call options or engage in the writing of such options.

      All Portfolios may invest up to 10% of their total assets in the 
securities of other investment companies to the extent permitted by law.  A
Portfolio may incur duplicate advisory or management fees when investing in
another mutual fund.


             TRUSTEES AND OFFICERS OF THE TRUSTS AND THE AMR TRUST

      The AAdvantage Board, the Mileage Trust Board and the AMR Trust Board
provide broad supervision over each Trust's affairs.  AMR Investment Services,
Inc. (the "Manager") is responsible for the management and the administration
of each Trust's assets, and each Trust's officers are responsible for the
respective Trust's operations.  The Trustees and officers of the Trusts and the
AMR Trust are listed below, together with their principal occupations during
the past five years.  Unless otherwise indicated, the address of each person
listed below is 4333 Amon Carter Boulevard, MD 5645, Fort Worth, Texas  76155.

                                       2
<PAGE>   113
   
<TABLE>
<CAPTION>
                                      POSITION WITH
 NAME, AGE AND ADDRESS                 EACH TRUST          PRINCIPAL OCCUPATION DURING PAST 5 YEARS
 ---------------------                -------------        ----------------------------------------
 <S>                                  <C>                  <C>
 William F. Quinn* (50)               Trustee and          President, AMR Investment Services, Inc. (1986-
                                      President            Present); Chairman, American Airlines Employees
                                                           Federal Credit Union (October 1989-Present);
                                                           Trustee, American Performance Funds (1990-1994);
                                                           Director, Crescent Real Estate Equities, Inc.
                                                           (1994 - Present); Trustee, American AAdvantage
                                                           Funds (1987-Present); Trustee, American
                                                           AAdvantage Mileage Funds (1995-Present).

 Alan D. Feld (60)                    Trustee              Partner, Akin, Gump, Strauss, Hauer & Feld, LLP
 1700 Pacific Avenue                                       (1960-Present)#; Director, Clear Channel
 Suite 4100                                                Communications (1984-Present); Director,
 Dallas, Texas  75201                                      CenterPoint Properties, Inc. (1994-Present);
                                                           Trustee, American AAdvantage Funds (1993-
                                                           Present); Trustee, American AAdvantage
                                                           Funds(1996- Present); Trustee American
                                                           AAdvantage Mileage Funds (1996-Present).

 Ben J. Fortson (65)                  Trustee              President and CEO, Fortson Oil Company (1958-
 301 Commerce Street                                       Present); Director, Kimbell Art Foundation
 Suite 3301                                                (1964-Present); Director, Burnett Foundation
 Fort Worth, Texas  76102                                  (1987-Present); Honorary Trustee, Texas
                                                           Christian University (1986-Present); Trustee,
                                                           American AAdvantage Funds (1996-Present);
                                                           Trustee, American AAdvantage Mileage Funds
                                                           (1996-Present).

 John S. Justin (81)                  Trustee              Chairman and Chief Executive Officer, Justin
 2821 West Seventh Street                                  Industries, Inc. (a diversified holding company)
 Fort Worth, Texas  76107                                  (1969-Present); Executive Board Member, Blue
                                                           Cross/Blue Shield of Texas (1985-Present); Board
                                                           Member, Zale Lipshy Hospital (June 1993-
                                                           Present); Trustee, Texas Christian University
                                                           (1980-Present); Director and Executive Board
                                                           Member, Moncrief Radiation Center (1985-
                                                           Present); Director, Texas New Mexico Enterprises
                                                           (1984-1993); Director, Texas New Mexico Power
                                                           Company (1979-1993); Trustee, American
                                                           AAdvantage Funds (1989-Present); Trustee,
                                                           American AAdvantage Mileage Funds (1995-
                                                           Present).

 Stephen D. O'Sullivan* (62)          Trustee              Consultant (1994-Present); Vice President and
                                                           Controller (1985-1994), American Airlines, Inc.;
                                                           Trustee, American AAdvantage Funds (1987-
                                                           Present); Trustee, American AAdvantage Mileage
                                                           Funds (1995-Present).
</TABLE>
    

                                       3
<PAGE>   114
   
<TABLE>
<CAPTION>
                                      POSITION WITH
 NAME, AGE AND ADDRESS                 EACH TRUST          PRINCIPAL OCCUPATION DURING PAST 5 YEARS
 ---------------------                -------------        ----------------------------------------
 <S>                                  <C>                  <C>
 Roger T. Staubach (56)               Trustee              Chairman of the Board and Chief Executive
 6750 LBJ Freeway                                          Officer of The Staubach Company (a commercial
 Dallas, TX  75240                                         real estate company) (1982-present); Director,
                                                           Halliburton Company (1991-present); Director,
                                                           First USA, Inc. (1993-present); Director,
                                                           Brinker International (1993-present); Director,
                                                           Columbus Realty Trust (1994-present); Member of
                                                           the Advisory Board, The Salvation Army; Trustee,
                                                           Institute for Aerobics Research; Member of
                                                           Executive Council, Daytop/Dallas; former
                                                           quarterback of the Dallas Cowboys professional
                                                           football team; Trustee, American AAdvantage
                                                           Funds (1995-Present); Trustee, American
                                                           AAdvantage Mileage Funds (1995-Present).

 Kneeland Youngblood, M.D. (41)       Trustee              Physician (1982-Present); President, Youngblood
 2305 Cedar Springs Road                                   Enterprises, Inc. (a health care investment and
 Suite 401                                                 management firm) (1983-Present); Trustee,
 Dallas, Texas  75201                                      Teachers Retirement System of Texas (1993-
                                                           Present); Director, United States Enrichment
                                                           Corporation (1993-Present), Director, Just For
                                                           the Kids (1995-Present); Member, Council on
                                                           Foreign Relations (1995-Present); Trustee,
                                                                                          =          
                                                           American AAdvantage Funds (1996-Present);
                                                           Trustee, American AAdvantage Mileage Funds
                                                           (1996-Present).

 Nancy A. Eckl (35)                   Vice President       Vice President, AMR Investment Services, Inc.
                                                           (December 1990-Present).

 Michael W. Fields (44)               Vice President       Vice President, AMR Investment Services, Inc.
                                                           (August 1988-Present).

 Barry Y. Greenberg (34)              Vice President       Director, Legal and Compliance, AMR Investment
                                      and Assistant        Services, Inc. (1995-Present); Branch Chief
                                      Secretary            (1992-1995) and Staff Attorney (1988-1992),
                                                           Securities and Exchange Commission.

 Rebecca L. Harris (31)               Treasurer            Director of Finance (1995-Present), Controller
                                                           (1991-1995), AMR Investment Services, Inc.

 John B. Roberson (39)                Vice President       Vice President, AMR Investments Services, Inc.
                                                           (1991-Present).

 Thomas E. Jenkins, Jr. (31)          Assistant            Senior Compliance Analyst, AMR Investment
                                      Secretary            Services, Inc. (1996-Present); Staff Accountant
                                                           (1994-1996) and Compliance Examiner (1991-1994),
                                                           Securities and Exchange Commission.
</TABLE>
    

                                       4
<PAGE>   115
   
<TABLE>
<CAPTION>
                                      POSITION WITH
 NAME, AGE AND ADDRESS                 EACH TRUST          PRINCIPAL OCCUPATION DURING PAST 5 YEARS
 ---------------------                -------------        ----------------------------------------
 <S>                                  <C>                  <C>
 Adriana R. Posada (43)               Assistant            Senior Compliance Analyst (1996-Present) and
                                      Secretary            Compliance Analyst (1993- 1996), AMR Investment
                                                           Services, Inc.; Special Sales Representative,
                                                           American Airlines, Inc. (1991-1993).

 Clifford J. Alexander (54)           Secretary            Partner, Kirkpatrick & Lockhart LLP (law firm)
 1800 Massachusetts Ave. NW
 Washington, D.C. 20036

 Robert J. Zutz (45)                  Assistant            Partner, Kirkpatrick & Lockhart LLP (law firm)
 1800 Massachusetts Ave. NW           Secretary
 Washington, D.C. 20036
</TABLE>
    

#    The law firm of Akin, Gump, Strauss, Hauer & Feld LLP ("Akin, Gump")
     provides legal services to American Airlines, Inc., an affiliate of the
     Manager.  Mr. Feld has advised the Trusts that he has had no material
     involvement in the services provided by Akin, Gump to American Airlines,
     Inc. and that he has received no material benefit in connection with these
     services.  Akin, Gump does not provide legal services to the Manager or
     AMR Corporation.

*    Messrs. Quinn and O'Sullivan, by virtue of their current or former
     positions, are deemed to be "interested persons" of each Trust and the AMR
     Trust as defined by the 1940 Act.

     All Trustees and officers as a group own less than 1% of the outstanding
shares of any of the Funds.

   
     As compensation for their service to the Trusts and the AMR Trust, the
Independent Trustees and their spouses receive free air travel from American
Airlines, Inc., an affiliate of the Manager.  The Trusts and the AMR Trust do
not pay for these travel arrangements. However, the Trusts and the AMR Trust
compensate each Trustee with payments in an amount equal to the Trustees'
income tax on the value of this free airline travel.  Mr. O'Sullivan, whom as a
retiree of American Airlines, Inc. already receives free airline travel,
receives compensation annually of up to three round trip airline tickets for
each of his three adult children.  Trustees are also reimbursed for any
expenses incurred in attending Board meetings.  These amounts are reflected in
the following table for the fiscal year ended October 31, 1997.
    

   
<TABLE>
<CAPTION>
                                                                         Pension or                                      
                                                                         Retirement                                      
                                     Aggregate          Aggregate         Benefits                                       
                                    Compensation      Compensation     Accrued as Part     Estimated           Total     
                                      From the          From the           of the            Annual        Compensation  
                                     AAdvantage          Mileage           Trusts'       Benefits Upon    From AAdvantage
 Name of Trustee                       Trust              Trust           Expenses         Retirement      Funds Complex 
 ---------------                    ------------      ------------     ---------------   -------------    ---------------
 <S>                                  <C>                <C>                 <C>               <C>           <C>            
 William F. Quinn                     $      0           $      0        $      0          $      0            $      0
 Alan D. Feld                         $ 15,962           $ 15,962        $      0          $      0            $ 63,850
 Ben J. Fortson                       $  6,802           $  6,802        $      0          $      0            $ 27,209
 John S. Justin                       $    225           $    225        $      0          $      0            $    901
 Stephen D. O'Sullivan                $    493           $    493        $      0          $      0            $  1,973
 Roger T. Staubach                    $  8,269           $  8,269        $      0          $      0            $ 33,076
 Kneeland Youngblood, M.D.            $  9,525           $  9,525        $      0          $      0            $ 38,099
 </TABLE>
    

                                       5
<PAGE>   116

           MANAGEMENT, ADMINISTRATIVE SERVICES AND DISTRIBUTION FEES

   
      As described more fully in the Prospectus, the Manager is paid a
management fee as compensation  for its administrative services, for paying
investment advisory fees and for providing the Portfolios with advisory and
asset allocation services.  Management fees for the AAdvantage Trust for the
fiscal years ended October 31 were approximately as follows:  1995, $7,603,000
of which approximately $3,985,000 was paid by the Manager to the other
investment advisers;  1996, $10,853,000 of which approximately $5,403,000 was
paid by the Manager to the other investment advisers; and 1997, $13,730,443 of
which approximately $7,061,014 was paid by the Manager to the other investment
advisers.  Management fees in the amount of approximately  $29,000, $44,000 and
$7,309 were waived by the Manager during the fiscal years ended October 31,
1995 , 1996 and 1997, respectively.  These amounts include payments by
Portfolios in the AAdvantage Trust other than the Funds.

      In addition to the management fee, the Manager is paid an administrative
services fee for providing administrative and management services (other than
investment advisory services) to the Funds.  Administrative services fees for
the AAdvantage Trust for the fiscal years ended October 31 were approximately
as follows:  1995, $2,731,000;  1996, $2,893,400; and 1997, $4,538,345.
Administrative service fees in the amount of approximately  $9,000 were waived
by the Manager during the fiscal  year ended October 31, 1995.  These amounts
include payments by Portfolios in the AAdvantage Trust other than the Funds.

      Brokers Transaction Services, Inc. ("BTS"), is the distributor of the
Funds' shares and, as such, receives an annualized fee of $50,000 from the
Manager for distributing the shares of the Trusts.
    


                              REDEMPTIONS IN KIND

      Although each Fund intends to redeem shares in cash, each reserves the
right to pay the redemption price in whole or in part by a distribution of
readily marketable securities held by the applicable Fund's corresponding
Portfolio.  However, shareholders always will be entitled to redeem shares for
cash up to the lesser of $250,000 or 1% of the applicable Fund's net asset
value during any 90 day period.  Redemption in kind is not as liquid as a cash
redemption.  In addition, if redemption is made in kind, shareholders who
receive securities and sell them could receive less than the redemption value
of their securities and could incur certain transactions costs.


                                NET ASSET VALUE

   
      It is the policy of the Funds to attempt to maintain a constant price per
share of $1.00.  There can be no assurance that a $1.00 net asset value per
share will be maintained.  The portfolio instruments held by each Fund's
corresponding Portfolio are valued based on the amortized cost valuation
technique pursuant to Rule 2a-7 under the 1940 Act.  This involves valuing an
instrument at its cost and thereafter assuming a constant amortization to
maturity of any discount or premium, even though the portfolio security may
increase or decrease in market value.  Such market fluctuations are generally
in response to changes in interest rates.  Use of the amortized cost valuation
method requires the Funds' corresponding Portfolios to purchase instruments
having remaining maturities of 397 days or less, to maintain a dollar-weighted
average portfolio maturity of 90 days or less, and to invest only in securities
determined by the AMR Trust Board to be of high quality with minimal credit
risks.  The corresponding portfolios of the Money Market Funds may invest in
issuers or instruments that at the time of purchase have received the highest
short-term rating by two Rating Organizations, such as "D-1" by Duff & Phelps
and "F-1" by Fitch  IBCA, Inc., and have received the next highest short-term
rating by other Rating Organizations, such as "A-2" by Standard & Poors and
"P-2" by Moody's Investors Service, Inc.  See "Ratings of Municipal
Obligations" and "Ratings of Short-Term Obligations" for further information
concerning ratings.
    

                                       6
<PAGE>   117
                                TAX INFORMATION

TAXATION OF THE FUNDS

      To qualify for treatment as a regulated investment company ("RIC") under
the Internal Revenue Code of 1986, as amended ("Code"), each Fund (each of
which is treated as a separate corporation for these purposes) must, among
other requirements:

      Derive at least 90% of its gross income each taxable year from dividends,
      interest, payments with respect to securities loans and gains from the
      sale or other disposition of securities or certain other income;
   

    
      Diversify its investments in securities within certain statutory limits; 
      and

      Distribute annually to its shareholders at least 90% of its investment
      company taxable income (generally, taxable net investment income plus net
      short-term capital gain)  plus, in the case of the Municipal Money Market
      Fund, net interest income excludable from gross income under Section
      103(a) of the Code ("Distribution Requirement").

   
      Each Fund has received either a ruling from the Internal Revenue Service
("IRS") or an opinion of counsel that the Fund, as an investor in its
corresponding Portfolio, is deemed to own a proportionate share of the
Portfolio's assets and to earn the income on that share for purposes of
determining whether the Fund satisfies the income and diversification
requirements described above to qualify as a RIC.
    

      See the next section for a discussion of the tax consequences to the
Funds of certain investments by the Portfolios.

TAXATION OF THE PORTFOLIOS

   
      Each Portfolio has received a ruling from the IRS or an opinion of
counsel to the effect that, among other things, each Portfolio is  or should be
classified as a separate partnership for federal income tax purposes and is not
a "publicly traded partnership."  As a result,  each Portfolio is not or should
not be subject to federal income tax; instead, each investor in a Portfolio,
such as a Fund, is required to take into account in determining its federal
income tax liability its share of the Portfolio's income, gains, losses,
deductions, credits and tax preference items, without regard to whether it has
received any cash distributions from the Portfolio.

      Because, as noted above, each Fund is deemed to own a proportionate share
of its corresponding Portfolio's assets and to earn a proportionate share of
its corresponding Portfolio's income for purposes of determining whether the
Fund satisfies the requirements to qualify as a RIC, each Portfolio intends to
conduct its operations so that its corresponding Fund will be able to satisfy
all those requirements.
    

      Distributions to a Fund from its corresponding Portfolio (whether
pursuant to a partial or complete withdrawal or otherwise) will not result in
the Fund's recognition of any gain or loss for federal income tax purposes,
except that (1) gain will be recognized to the extent any cash that is
distributed exceeds the Fund's basis for its interest in the Portfolio before
the distribution, (2) income or gain will be recognized if the distribution is
in liquidation of the Fund's entire interest in the Portfolio and includes a
disproportionate share of any unrealized receivables held by the Portfolio and
(3) loss will be recognized if a liquidation distribution consists solely of
cash and/or unrealized receivables.  A Fund's basis for its interest in its
corresponding Portfolio generally will equal the amount of cash and the basis
of any property the Fund invests in the Portfolio, increased by the Fund's
share of the Portfolio's net income and gains and decreased by (a) the amount
of cash and the basis of any property the Portfolio distributes to the Fund and
(b) the Fund's share of the Portfolio's losses.

      The Municipal Money Market Fund's corresponding Portfolio may acquire
zero coupon or other securities issued with original issue discount.  As an
investor in the Portfolio that holds those securities, the Municipal

                                       7
<PAGE>   118
Money Market Fund would have to include in its income its share of the original
issue discount that accrues on the securities during the taxable year, even if
the Portfolio (and, hence, the Fund) receives no corresponding payment on the
securities during the year.  Because each Fund annually must distribute
substantially all of its investment company taxable income, including any
original issue discount, to satisfy the Distribution Requirement and avoid
imposition of the 4% excise tax described in the Prospectus, the Municipal
Money Market Fund may be required in a particular year to distribute as a
dividend an amount that is greater than the total amount of cash it actually
receives.  Those distributions would be made from the Fund's cash assets, if
any, or the proceeds of redemption of a portion of the Municipal Money Market
Fund's interest in its corresponding Portfolio (which redemption proceeds would
be paid from the Portfolio's cash assets or the proceeds of sales of portfolio
securities, if necessary).  The Portfolio might realize capital gains or losses
from any such sales, which would increase or decrease the Municipal Money
Market Fund's investment company taxable income and/or net capital gain (the
excess of net long-term capital gain over net short-term capital loss).  In
addition, any such gains might be realized on the disposition of securities
held for less than three months.  Because of the Short-Short Limitation
applicable to the Fund, any such gains would reduce the Portfolio's ability to
sell other securities held for less than three months that it might wish to
sell in the ordinary course of its portfolio management.

TAXATION OF THE FUNDS' SHAREHOLDERS

   
      Distributions by the Municipal Money Market Fund of the amount by which
the Fund's share of its corresponding Portfolio's income on tax-exempt
securities exceeds certain amounts disallowed as deductions, designated by  the
Fund as "exempt-interest dividends," generally may be excluded from gross
income by its shareholders.  Dividends paid by the Municipal Money Market Fund
will qualify as exempt-interest dividends if, at the close of each quarter of
its taxable year, at least 50% of the value of its total assets (including its
share of the Municipal Money Market Portfolio's assets) consists of securities
the interest on which is excludable from gross income under Section 103(a) of
the Code.  The Municipal Money Market Fund intends to continue to satisfy this
requirement.  The aggregate dividends excludable from shareholders' gross
income may not exceed the Municipal Money Market Fund's net tax-exempt income.
The shareholders' treatment of dividends from the Municipal Money Market Fund
under state and local  income tax laws may differ from the treatment thereof
under the Code.
    

      Exempt-interest dividends received by a corporate shareholder may be
indirectly subject to the alternative minimum tax.  In addition, entities or
persons who are "substantial users" (or persons related to "substantial users")
of facilities financed by private activity bonds ("PABs") or industrial
development bonds ("IDBs") should consult their tax advisers before purchasing
shares of the Municipal Money Market Fund because, for users of certain of
these facilities, the interest on those bonds is not exempt from federal income
tax.  For these purposes, the term "substantial user" is defined generally to
include a "non-exempt person" who regularly uses in trade or business a part of
a facility financed from the proceeds of PABs or IDBs.

      Up to 85% of social security and railroad retirement benefits may be
included in taxable income for recipients whose adjusted gross income
(including income from tax-exempt sources such as the Municipal Money Market
Fund) plus 50% of their benefits exceeds certain base amounts.  Exempt-interest
dividends from the Municipal Money Market Fund still are tax-exempt to the
extent described above; they are only included in the calculation of whether a
recipient's income exceeds the established amounts.

      The foregoing is only a summary of some of the important federal tax
considerations affecting the Funds and their shareholders and is not intended
as a substitute for careful tax planning.  Accordingly, prospective investors
are advised to consult their own tax advisers for more detailed information
regarding the above and for information regarding federal, state, local and
foreign taxes.


                       YIELD AND TOTAL RETURN QUOTATIONS

      The Platinum Class of the AAdvantage Trust commenced operations on
November 7, 1995 and the Platinum Class of the Mileage Trust commenced
operations on January 29, 1996.  For purposes of advertising performance, and
in accordance with Securities and Exchange Commission staff interpretations,
the Funds in the AAdvantage Trust have adopted the performance of the
Institutional Class of the Funds in the AAdvantage Trust for periods prior to
the inception date.  The Mileage Fund has adopted the performance of the
American AAdvantage Money Market Mileage Fund - Mileage Class for periods prior
to its inception date. The performance results for the Platinum Class will be
lower, because the figures for the other classes (except for the Mileage

                                       8
<PAGE>   119
Fund) do not reflect the 12b-1 fees, Administrative Services Plan fees or other
class expenses that will be borne by the Platinum Class.

      A quotation of yield on shares of the Funds may appear from time to time
in advertisements and in communications to shareholders and others.  Quotations
of yields are indicative of yields for the limited historical period used but
not for the future.  Yield will vary as interest rates and other conditions
change.  Yield also depends on the quality, length of maturity and type of
instruments invested in by the Funds, and the applicable Fund's operating
expenses.  A comparison of the quoted yields offered for various investments is
valid only if yields are calculated in the same manner.  In addition, other
similar investment companies may have more or less risk due to differences in
the quality or maturity of securities held.

      The yields of the Funds may be calculated in one of two ways:

   
      (1)  Current Yield--the net average annualized return without compounding
      accrued interest income.  For a 7-day current yield, this is computed by
      dividing the net change in value over a 7 calendar-day period of a
      hypothetical account having one share at the beginning of a 7
      calendar-day period by the value of the account at the beginning of this
      period to determine the "base period return".  The quotient is multiplied
      by 365 divided by 7 and stated to two decimal places.  A daily current
      yield is calculated by multiplying the net change in value over one day
      by 365 and stating it to two decimal places.   Income other than
      investment income and capital changes, such as realized gains and losses
      from the sale of securities and unrealized appreciation and depreciation,
      are excluded in calculating the net change in value of an account.
      However, this calculation includes the aggregate fees and other expenses
      that are charged to all shareholder accounts in a Fund.  In determining
      the net change in value of a hypothetical account, this value is adjusted
      to reflect the value of any additional shares purchased with dividends
      from the original share and dividends declared on both the original share
      and any such additional shares.
    

      (2)  Effective Yield--the net average annualized return as computed by
      compounding accrued interest income.  In determining the 7-day effective
      yield, a Fund will compute the "base period return" in the same manner
      used to compute the "current yield" over a 7 calendar-day period as
      described above.  One is then added to the base period return and the sum
      is raised to the 365/7 power.  One is subtracted from the result,
      according to the following formula:

            EFFECTIVE YIELD = [ (BASE PERIOD RETURN + 1)365/7 ] - 1

      The current and effective yields for the Funds are as follows:

   
<TABLE>
<CAPTION>
                                                                                Current yield for       Effective yield for  
                                                            Current daily      the seven-day period     the seven-day period 
                                                             yield as of              ended                    ended         
                Platinum Class                            October 31,  1997      October 31,  1997        October 31,  1997   
                --------------                            -----------------      -----------------        -----------------   
                  <S>                                           <C>                     <C>                      <C>
                  Money Market Fund                             4.83%                   4.82%                    4.94%
                  Municipal Money Market Fund                   2.79%                   2.79%                    2.83%
                  U.S. Government Money Market Fund             4.72%                   4.64%                    4.75%
                  Mileage Fund                                  4.69%                   4.68%                    4.79%
 </TABLE>
    


      The Municipal Money Market Fund also may advertise a tax-equivalent
current and effective yield.  The tax- equivalent yields are calculated as
follows:

     CURRENT YIELD/(1 - APPLICABLE TAX RATE) = CURRENT TAX-EQUIVALENT YIELD

   EFFECTIVE YIELD/(1 - APPLICABLE TAX RATE) = EFFECTIVE TAX-EQUIVALENT YIELD

                                       9
<PAGE>   120
   
      Based on these formulas, the current and effective tax-equivalent yields
for the Municipal Money Market Fund for the seven day period ending October 31,
1997 were  4.62% and 4.69%, respectively (based upon a 39.6% personal tax
rate).
    

      The advertised total return for a class of a Fund would be calculated by
equating an initial amount invested in a class of a Fund to the ending
redeemable value, according to the following formula:

                                 P(1 + T)(N)= ERV

where "P" is a hypothetical initial payment of $1,000; "T" is the average
annual total return for the Fund; "n" is the number of years involved; and
"ERV" is the ending redeemable value of a hypothetical $1,000 payment made in
the Fund at the beginning of the investment period covered.

   
      Based on this formula, annualized total returns were as follows for the
periods indicated:
    

   
<TABLE>
<CAPTION>
                                                                                                                   For the period
                                                            For the one-     For the five-                        from commencement
                                                             year period      year period     For the ten-year      of operations
                                                            ended October    ended October      period ended       through October
                                                             31, 1997(1)      31, 1997(1)        October 31,         31, 1997(1)
                                                                                                    1997(1)
              <S>                                                <C>              <C>                <C>                 <C>
             Platinum Class
               Money Market Fund                                4.88%            4.59%              5.95%               5.98%
               Municipal Money Market Fund                      2.82%             N/A(2)            N/A(2)              2.97%
               U. S. Government Money Mkt. Fund (3)             4.63%            4.35%              N/A(2)              4.25%
                Mileage Fund                                    4.72%            4.36%              5.81%               5.84%
</TABLE>
    

(1) Performance of the Funds of the AAdvantage Trust represents total returns
achieved by the Institutional Class from the inception date of each Fund up to
the inception date of the Platinum Class on 11/7/95.  Performance of the
Mileage Fund represents total return of the Money Market Fund-Institutional
Class (9/1/87-10/31/91); the Money Market Fund- Mileage Class
(11/1/91-10/31/95); the Money Market Mileage Fund-Mileage Class
(11/1/95-1/28/96) and the Money Market Mileage Fund-Platinum Class since its
1/29/96 inception.  Total returns have not been adjusted for any difference
between the fees and expenses of each Fund and the historical fees and expenses
of the predecessor Funds. Inception dates are: Money Market Fund-Institutional
Class, 9/1/87; Municipal Money Market Fund-Institutional Class, 11/10/93; U.S.
Government Money Market Fund-Institutional Class, 3/1/92.

   
(2) The  Fund was not  operational during this period.
    

(3) Prior to March 1, 1997, the U.S. Government Money Market Fund was known as
the U.S. Treasury Money Market Fund and operated under different investment
policies.

     Each Fund also may use "aggregate" total return figures for various
periods which represent the cumulative change in value of an investment in a
Fund for the specific period.  Such total returns reflect changes in share
prices of a Fund and assume reinvestment of dividends and distributions.

   
      In reports or other communications to shareholders or in advertising
material, each class of a Fund may from time to time compare its performance
with that of other mutual funds in rankings prepared by Lipper Analytical
Services, Inc., Morningstar, Inc., IBC Financial Data, Inc. and other similar
independent services which monitor the performance of mutual funds or
publications such as the "New York Times," "Barrons" and the "Wall Street
Journal."  Each Fund  also may compare its performance with various indices
prepared by independent services such as Standard & Poor's, Morgan Stanley or
Lehman Brothers or to unmanaged indices that may assume reinvestment of
dividends but generally do not reflect deductions for administrative and
management costs.
    

                                       10
<PAGE>   121
   
      Advertisements for the Funds may mention that the Funds offer a variety
of investment options.  They  also may compare the Funds to federally insured
investments such as bank certificates of deposit and credit union deposits,
including the long-term effects of inflation on these types of investments.
Advertisements  also may compare the historical rate of return of different
types of investments. Information concerning broker-dealers who sell the Funds
also may appear in advertisements for the Funds, including their ranking as
established by various publications compared to other broker-dealers.
    

      From time to time, the Manager may use contests as a means of promoting
the American AAdvantage Funds and the American AAdvantage Mileage Funds.
Prizes may include free air travel and/or hotel accommodations.  Listings for
certain of the Funds may be found in newspapers under the heading Amer AAdvant.

      Each Fund may advertise the standard deviation of its returns for various
time periods and compare its standard deviation to that of various indices.
Standard deviation of returns over time is a measure of volatility.  It
indicates the spread of returns about their central tendency or mean.  In
theory, a Fund that is more volatile should receive a higher return in exchange
for taking extra risk.  Standard deviation is a well-accepted statistic to
gauge the riskiness of an investment strategy and measure its historical
volatility as a predictor of risk, although the measure is subject to time
selection bias.


                            DESCRIPTION OF THE TRUST

      The AAdvantage Trust, organized on January 16, 1987 and the Mileage
Trust, organized on February 22, 1995, (originally named American AAdvantage
Funds II) are entities of the type commonly known as a "Massachusetts business
trust." Under Massachusetts law, shareholders of such a trust may, under
certain circumstances, be held personally liable for its obligations.  However,
each Trust's Declaration of Trust contains an express disclaimer of shareholder
liability for acts or obligations of the Trust and provides for indemnification
and reimbursement of expenses out of Trust property for any shareholder held
personally liable for the obligations of the Trust.  The Declaration of Trust
also provides that the Trusts may maintain appropriate insurance (for example,
fidelity bonding) for the protection of the Trust, its shareholders, Trustees,
officers, employees and agents to cover possible tort and other liabilities.
Thus, the risk of a shareholder incurring financial loss due to shareholder
liability is limited to circumstances in which both inadequate insurance
existed and the Trust itself was unable to meet its obligations.  The Trust has
not engaged in any other business.  The Platinum Class was created as an
investment vehicle for cash balances of customers of certain broker-dealers.


                      CONTROL PERSONS AND 5% SHAREHOLDERS

      There are no persons deemed to control any Funds by virtue of their
ownership of more than 25% of the outstanding shares of a Fund as of January
31, 1997:


                               OTHER INFORMATION

      Bank Deposit Notes-Bank deposit notes are obligations of a bank, rather
than bank holding company corporate debt.  The only structural difference
between bank deposit notes and certificates of deposit is that interest on bank
deposit notes is calculated on a 30/360 basis as are corporate notes/bonds.
Similar to certificates of deposit, deposit notes represent bank level
investments and, therefore, are senior to all holding company corporate debt.

      Bankers' Acceptances-Bankers' acceptances are short-term credit
instruments designed to enable businesses to obtain funds to finance commercial
transactions.  Generally, an acceptance is a time draft drawn on a bank by an
exporter or an importer to obtain a stated amount of funds to pay for specific
merchandise.  The draft is then "accepted" by a bank that, in effect,
unconditionally guarantees to pay the face value of the instrument on its
maturity date.  The acceptance may then be held by the accepting bank as an
earning asset or it may be sold in the secondary market at the going rate of
discount for a specific maturity.  Although maturities for acceptances can be
as long as 270 days, most acceptances have maturities of six months or less.

                                       11
<PAGE>   122
      Cash Equivalents-Cash equivalents include certificates of deposit, bearer
deposit notes, bankers' acceptances, government obligations, commercial paper,
short-term corporate debt securities and repurchase agreements.

      Certificates of Deposit-Certificates of deposit are issued against funds
deposited in an eligible bank (including its domestic and foreign branches,
subsidiaries and agencies), are for a definite period of time, earn a specified
rate of return and are normally negotiable.

      Commercial Paper-Commercial paper refers to promissory notes representing
an unsecured debt of a corporation or finance company with a fixed maturity of
no more than 270 days.  A variable amount master demand note (which is a type
of commercial paper) represents a direct borrowing arrangement involving
periodically fluctuating rates of interest under a letter agreement between a
commercial paper issuer and an institutional lender pursuant to which the
lender may determine to invest varying amounts.

      Derivatives-Generally, a derivative is a financial arrangement, the value
of which is based on, or "derived" from, a traditional security, asset or
market index.  Some "derivatives" such as mortgage-related and other
asset-backed securities are in many respects like any other investment,
although they may be more volatile or less liquid than more traditional debt
securities. There are, in fact, many different types of derivatives and many
different ways to use them. There are a range of risks associated with those
uses.

      Full Faith and Credit Obligations of the U.S. Government-Securities
issued or guaranteed by the U.S. Treasury, backed by the full taxing power of
the U.S. Government or the right of the issuer to borrow from the U.S.
Treasury.

      Illiquid Securities.  Historically, illiquid securities have included
securities subject to contractual or legal restrictions on resale because they
have not been registered under the 1933 Act, securities that are otherwise not
readily marketable and repurchase agreements having a remaining maturity of
longer than seven calendar days.  Securities that have not been registered
under the 1933 Act are referred to as private placements or restricted
securities and are purchased directly from the issuer or in the secondary
market.  Mutual funds do not typically hold a significant amount of these
restricted or other illiquid securities because of the potential for delays on
resale and uncertainty in valuation.  Limitations on resale may have an adverse
effect on the marketability of portfolio securities and a mutual fund might be
unable to dispose of restricted or other illiquid securities promptly or at
reasonable prices and might thereby experience difficulty satisfying
redemptions within seven calendar days.  A mutual fund also might have to
register such restricted securities in order to dispose of them resulting in
additional expense and delay. Adverse market conditions could impede such a
public offering of securities.

      In recent years, however, a large institutional market has developed for
certain securities that are not registered under the 1933 Act, including
repurchase agreements, commercial paper, foreign securities, municipal
securities and corporate bonds and notes.  Institutional investors depend on an
efficient institutional market in which the unregistered security can be
readily resold or on an issuer's ability to honor a demand for repayment.
However, the fact that there are contractual or legal restrictions on resale of
such investments to the general public or to certain institutions may not be
indicative of their liquidity.

   
      Loan Participation Interests-Loan participation interests represent
interests in bank loans made to corporations.  The contractual arrangement with
the bank transfers the cash stream of the underlying bank loan to the
participating investor.  Because the issuing bank does not guarantee the
participations, they are subject to the credit risks generally associated with
the underlying corporate borrower.  In addition, because it may be necessary
under the terms of the loan participation for the investor to assert through
the issuing bank such rights as may exist against the underlying corporate
borrower, in the event the underlying corporate borrower fails to pay principal
and interest when due, the investor may be subject to delays, expenses and
risks that are greater than those that would have been involved if the investor
had purchased a direct obligation (such as commercial paper) of such borrower.
Moreover, under the terms of the loan participation, the investor may be
regarded as a creditor of the issuing bank (rather than of the underlying
corporate borrower), so that the issuer  also may be subject to the risk that
the issuing bank may become insolvent.  Further, in the event of the bankruptcy
or insolvency of the corporate borrower, the loan participation may be subject
to certain defenses that can be asserted by such borrower as a result of
improper conduct by the issuing bank.  The secondary market, if any, for these
loan participations is extremely limited and any such participations purchased
by the investor are regarded as illiquid.
    

                                       12
<PAGE>   123
      Loan Transactions-Loan transactions involve the lending of securities to
a broker-dealer or institutional investor for its use in connection with short
sales, arbitrages or other security transactions.  The purpose of a qualified
loan transaction is to afford a lender the opportunity to continue to earn
income on the securities loaned and at the same time earn fee income or income
on the collateral held by it.

      Securities loans will be made in accordance with the following
conditions:  (1) the Portfolio must receive at least 100% collateral in the
form of cash or cash equivalents, securities of the U.S. Government and its
agencies and instrumentalities, and approved bank letters of credit; (2) the
borrower must increase the collateral whenever the market value of the loaned
securities (determined on a daily basis) rises above the level of collateral;
(3) the Portfolio must be able to terminate the loan after notice, at any time;
(4) the Portfolio must receive reasonable interest on the loan or a flat fee
from the borrower, as well as amounts equivalent to any dividends, interest or
other distributions on the securities loaned, and any increase in market value
of the loaned securities; (5) the Portfolio may pay only reasonable custodian
fees in connection with the loan; and (6) voting rights on the securities
loaned may pass to the borrower, provided, however, that if a material event
affecting the investment occurs, the AMR Trust Board must be able to terminate
the loan and vote proxies or enter into an alternative arrangement with the
borrower to enable the AMR Trust Board to vote proxies.

      While there may be delays in recovery of loaned securities or even a loss
of rights in collateral supplied should the borrower fail financially, loans
will be made only to firms deemed by the AMR Trust Board to be of good
financial standing and will not be made unless the consideration to be earned
from such loans would justify the risk.  Such loan transactions are referred to
in this Statement of Additional Information as "qualified" loan transactions.

      The cash collateral so acquired through qualified loan transactions may
be invested only in those categories of high quality liquid securities
previously authorized by the AMR Trust Board.

      Mortgage-Backed Securities-Mortgage-backed securities consist of both
collateralized mortgage obligations and mortgage pass-through certificates.

      Collateralized Mortgage Obligations ("CMOs")-CMOs and interests in real 
estate mortgage investment conduits ("REMICs") are debt securities
collateralized by mortgages, or mortgage pass-through securities. CMOs divide
the cash flow generated from the underlying mortgages or mortgage pass-through
securities into different groups referred to as "tranches," which are then
retired sequentially over time in order of priority. The principal governmental
issuers of such securities are the Federal National Mortgage Association
("FNMA"), a government sponsored corporation owned entirely by private
stockholders and the Federal Home Loan Mortgage Corporation ("FHLMC"), a
corporate instrumentality of the United States created pursuant to an act of
Congress which is owned entirely by Federal Home Loan Banks. The issuers of CMOs
are structured as trusts or corporations established for the purpose of issuing
such CMOs and often have no assets other than those underlying the securities
and any credit support provided. A REMIC is a mortgage securities vehicle that
holds residential or commercial mortgages and issues securities representing
interests in those mortgages. A REMIC may be formed as a corporation,
partnership, or segregated pool of assets. The REMIC itself is generally exempt
from federal income tax, but the income from the mortgages is reported by
investors. For investment purposes, interests in REMIC securities are virtually
indistinguishable from CMOs.

      Mortgage Pass-Through Certificates-Mortgage pass-through certificates are 
issued by governmental, government- related and private organizations which are
backed by pools of mortgage loans.

      (1)  Government National Mortgage Association ("GNMA") Mortgage
Pass-Through Certificates ("Ginnie Maes")-GNMA is a wholly-owned U.S.
Government corporation within the Department of Housing and Urban Development.
Ginnie Maes represent an undivided interest in a pool of mortgages that are
insured by the Federal Housing Administration or the Farmers Home
Administration or guaranteed by the Veterans Administration.  Ginnie Maes
entitle the holder to receive all payments (including prepayments) of principal
and interest owed by the individual mortgagors, net of fees paid to GNMA and to
the issuer which assembles the mortgage pool and passes through the monthly
mortgage payments to the certificate holders (typically, a mortgage banking
firm), regardless of whether the individual mortgagor actually makes the
payment.  Because payments are made to certificate holders regardless of
whether payments are actually received on the underlying mortgages, Ginnie Maes
are of the "modified pass-through" mortgage certificate type.  The GNMA is
authorized to guarantee the timely payment of principal and interest on the
Ginnie Maes.  The GNMA guarantee is backed by the full faith and credit of the
United States, and the GNMA has unlimited authority to borrow funds from the
U.S. Treasury to make payments under the guarantee.  The market for Ginnie Maes
is highly liquid

                                       13
<PAGE>   124
because of the size of the market and the active participation in the secondary
market of security dealers and a variety of investors.

      (2)  FHLMC Mortgage Participation Certificates ("Freddie Macs")-Freddie
Macs represent interests in groups of specified first lien residential
conventional mortgages underwritten and owned by the FHLMC.  Freddie Macs
entitle the holder to timely payment of interest, which is guaranteed by the
FHLMC.  The FHLMC guarantees either ultimate collection or timely payment of
all principal payments on the underlying mortgage loans.  In cases where the
FHLMC has not guaranteed timely payment of principal, the FHLMC may remit the
amount due because of its guarantee of ultimate payment of principal at any
time after default on an underlying mortgage, but in no event later than one
year after it becomes payable.  Freddie Macs are not guaranteed by the United
States or by any of the Federal Home Loan Banks and do not constitute a debt or
obligation of the United States or of any Federal Home Loan Bank.  The
secondary market for Freddie Macs is highly liquid because of the size of the
market and the active participation in the secondary market of the FHLMC,
security dealers and a variety of investors.

      (3)  FNMA Guaranteed Mortgage Pass-Through Certificates ("Fannie
Maes")-Fannie Maes represent an undivided interest in a pool of conventional
mortgage loans secured by first mortgages or deeds of trust, on one family or
two to four family, residential properties.  The FNMA is obligated to
distribute scheduled monthly installments of principal and interest on the
mortgages in the pool, whether or not received, plus full principal of any
foreclosed or otherwise liquidated mortgages.  The obligation of the FNMA under
its guarantee is solely its obligation and is not backed by, nor entitled to,
the full faith and credit of the United States.

      (4)  Mortgage-Related Securities Issued by Private Organizations-Pools
created by non-governmental issuers generally offer a higher rate of interest
than government and government-related pools because there are no direct or
indirect government guarantees of payments in such pools.  However, timely
payment of interest and principal of these pools is often partially supported
by various enhancements such as over-collateralization and senior/subordination
structures and by various forms of insurance or guarantees, including
individual loan, title, pool and hazard insurance.  The insurance and
guarantees are issued by government entities, private insurers or the mortgage
poolers.  Although the market for such securities is becoming increasingly
liquid, securities issued by certain private organizations may not be readily
marketable.

      Municipal Lease Obligations ("MLOs")-MLOs are issued by state and local
governments and authorities to acquire land and a wide variety of equipment and
facilities.  These obligations typically are not fully backed by the
municipality's credit and thus interest may become taxable if the lease is
assigned.  If funds are not appropriated for the following year's lease
payments, a lease may terminate with the possibility of default on the lease
obligation.  With respect to MLOs purchased by the corresponding Portfolio of
the Municipal Money Market Fund, the AMR Trust Board has established the
following guidelines for determining the liquidity of the MLOs in its
portfolio, and, subject to review by the AMR Trust Board, has delegated that
responsibility to the investment adviser:  (1) the frequency of trades and
quotes for the security; (2) the number of dealers willing to purchase or sell
the security and the number of other potential buyers; (3) the willingness of
dealers to undertake to make a market in the security; (4) the nature of the
marketplace trades; (5) the likelihood that the marketability of the obligation
will be maintained through the time the security is held by the Portfolio; (6)
the credit quality of the issuer and the lessee; (7) the essentiality to the
lessee of the property covered by the lease and (8) for unrated MLOs, the MLOs'
credit status analyzed according to the factors reviewed by rating agencies.

      Private Activity Obligations-Private activity obligations are issued to
finance, among other things, privately operated housing facilities, pollution
control facilities, convention or trade show facilities, mass transit, airport,
port or parking facilities and certain facilities for water supply, gas,
electricity, sewage or solid waste disposal.  Private activity obligations are
also issued to privately held or publicly owned corporations in the financing
of commercial or industrial facilities.  The principal and interest on these
obligations may be payable from the general revenues of the users of such
facilities.  Shareholders, depending on their individual tax status, may be
subject to the federal alternative minimum tax on the portion of a distribution
attributable to these obligations.  Interest on private activity obligations
will be considered exempt from federal income taxes; however, shareholders
should consult their own tax advisers to determine whether they may be subject
to the federal alternative minimum tax.

      Ratings of Long-Term Obligations-The Portfolio utilizes ratings provided
by the following nationally recognized statistical rating organizations
("Rating Organizations") in order to determine eligibility of long-term
obligations.

                                       14
<PAGE>   125
      The two highest Moody's Investors Service, Inc. ("Moody's") ratings for
long-term obligations (or issuers thereof) are Aaa and Aa.  Obligations rated
Aaa are judged by Moody's to be of the best quality.  Obligations rated Aa are
judged to be of high quality by all standards.  Together with the Aaa group,
such debt comprises what is generally known as high-grade debt.  Moody's states
that debt rated Aa is rated lower than Aaa debt because margins of protection
or other elements make long-term risks appear somewhat larger than for Aaa
debt. Moody's also supplies numerical indicators 1, 2, and 3 to rating
categories.  The modifier 1 indicates that the security is in the higher end of
its rating category; the modifier 2 indicates a mid-range ranking; and modifier
3 indicates a ranking toward the lower end of the category.

      The two highest Standard & Poor's ratings for long-term obligations are
AAA and AA.  Obligations rated AAA have the highest rating assigned by Standard
& Poor's.  Capacity to pay interest and repay principal is extremely strong.
Obligations rated AA have a very strong capacity to pay interest and repay
principal and differs from the highest rated issues only in a small degree.

      Duff & Phelps' two highest ratings for long-term obligations are AAA and
AA.  Obligations rated AAA have the highest credit quality with risk factors
being negligible.  Obligations rated AA are of high credit quality and strong
protection factors.  Risk is modest but may vary slightly from time to time
because of economic conditions.

      Thomson BankWatch ("BankWatch") long-term debt ratings apply to specific
issues of long-term debt and preferred stock.  They specifically assess the
likelihood of an untimely repayment of principal or interest over the term to
maturity of the rated instrument.  BankWatch's two  highest ratings for
long-term obligations are AAA and AA.  Obligations rated AAA indicate that the
ability to repay principal and interest on a timely basis is very high.
Obligations rated AA indicate a superior ability to repay principal and
interest on a timely basis, with limited incremental risk compared to issues
rated in the highest category.

   
      Fitch  IBCA, Inc. ("Fitch") investment grade bond ratings provide a guide
to investors in determining the credit risk associated with a particular
security.  The ratings represent Fitch's assessment of the issuer's ability to
meet the obligations of a specific debt issue or class of debt in a timely
manner.  Obligations rated AAA are considered to be investment grade and of the
highest credit quality.  The obligor has an exceptionally strong ability to pay
interest and repay principal, which is unlikely to be affected by reasonable
foreseeable events.  Bonds rated AA are considered to be investment grade and
of very high credit quality.  The obligor's ability to pay interest and repay
principal is very strong, although not quite as strong as bonds rated AAA.
    

      Standard & Poor's, Duff & Phelps and Fitch apply indicators, such as
"+","-," or no character, to indicate relative standing within the major rating
categories.

   
      Ratings of Municipal Obligations-Moody's ratings for state and municipal
short-term obligations are designated Moody's Investment Grade or "MIG" with
variable rate demand obligations being designated as "VMIG."  A VMIG rating
also may be assigned to commercial paper programs which are characterized as
having variable short-term maturities but having neither a variable rate nor
demand feature.  Factors used in determination of ratings include liquidity of
the borrower and short-term cyclical elements.
    

      Standard & Poor's uses SP-1, SP-2, and SP-3 to rate short-term municipal
obligations.  A rating of SP-1 denotes a very strong or strong capacity to pay
principal and interest.

      Ratings of Short-term Obligations-The rating P-1 is the highest
short-term rating assigned by Moody's.  Among the factors considered by Moody's
in assigning ratings are the following:  (1) evaluations of the management of
the issuer; (2) economic evaluation of the issuer's industry or industries and
an appraisal of speculative-type risks which may be inherent in certain areas;
(3) evaluation of the issuer's products in relation to competition and customer
acceptance; (4) liquidity; (5) amount and quality of long-term debt; (6) trend
of
                                       15
<PAGE>   126
earnings over a period of ten years; (7) financial strength of a parent company
and the relationships which exist with the issuer; and (8) recognition by the
management of obligations which may be present or may arise as a result of
public interest questions and preparations to meet such obligations.

      Short-term obligations (or issuers thereof) rated A-1 by Standard &
Poor's have the following characteristics.  Liquidity ratios are adequate to
meet cash requirements.  The issuer has access to at least two additional
channels of borrowing.  Basic earnings and cash flow have an upward trend with
allowance made for unusual circumstances.  Typically, the issuer's industry is
well established and the issuer has a strong position within the industry.  The
reliability and quality of management are unquestioned.  Relative strength or
weakness of the above factors determines whether the issuer's short-term
obligation is rated A-1, A-2, or A-3.
   

    
      The distinguishing feature of Duff & Phelps Credit Ratings' short-term
rating is the refinement of the traditional 1 category.  The majority of
short-term debt issuers carry the highest rating, yet quality differences exist
within that tier.  Obligations rated D-1+ indicate the highest certainty of
timely payment.  Safety is just below risk-free U.S.  Treasury obligations.
Obligations rated D-1 have a very high certainty of timely payment.  Risk
factors are minor.  Obligations rated D-1- have a high certainty of timely
payment.  Risk factors are very small.  Obligations rated D-2 have good
certainty of timely payment.  Liquidity factors and company fundamentals are
sound.  Although ongoing funding needs may enlarge total financing
requirements, access to capital markets is good.  Risk factors are small.

      Thomson BankWatch short-term ratings are intended to assess the
likelihood of an untimely or incomplete payment of principal or interest.
Obligations rated TBW-1 indicate a very high likelihood that principal and
interest will be paid on a timely basis.  While the degree of safety regarding
timely payment of principal and interest is strong for an obligation rated
TBW-2, the relative degree of safety is not as high as for issues rated TBW-1.

      Fitch's short-term ratings apply to debt obligations that are payable on
demand or have original maturities of generally up to three years, including
commercial paper, certificates of deposit, medium-term notes, and municipal and
investment notes.  A rating of F-1+ indicates exceptionally strong credit
quality.  Issues assigned this rating are regarded as having the strongest
degree of assurance for timely payment.   Obligations rated F-1 have very
strong credit quality.  Issues assigned this rating reflect an assurance of
timely payment only slightly less in degree than issues rated F-1+. Issues
assigned a rating of F-2 indicate good credit quality.  Issues assigned this
rating have a satisfactory degree of assurance for timely payment, but the
margin of safety is not as great as for issues assigned F- 1+ and F-1 ratings.

      Repurchase  Agreements-A repurchase agreement, which provides a means to
earn income on funds for periods as short as overnight, is an arrangement under
which the purchaser (e.g., a Portfolio) purchases securities and the seller
agrees, at the time of sale, to repurchase the securities at a specified time
and price.  The repurchase price will be higher than the purchase price, the
difference being income to the purchaser, or the purchase and repurchase prices
may be the same, with interest at a stated rate due to the purchaser together
with the repurchase price on repurchase.  In either case, the income to the
purchaser is unrelated to the interest rate on the securities subject to the
repurchase agreement.

      Each Portfolio may enter into repurchase agreements with any bank or
registered broker-dealer who, in the opinion of the AMR Trust Board presents a
minimum risk of bankruptcy during the term of the agreement based upon
guidelines that periodically are reviewed by the AMR Trust Board.  Each
Portfolio may enter into repurchase agreements as a short-term investment of
its idle cash in order to earn income.  The securities will be held by a
custodian (or agent) approved by the AMR Trust Board during the term of the
agreement.  However, if the market value of the securities subject to the
repurchase agreement becomes less than the repurchase price (including
interest), the Portfolio will direct the seller of the securities to deliver
additional securities so that the market value of all securities subject to the
repurchase agreement will equal or exceed the repurchase price.

      In the event of the commencement of bankruptcy or insolvency proceedings
with respect to the seller of the securities before the repurchase of the
securities under a repurchase agreement, a Portfolio may encounter a delay and
incur costs before being able to sell the security being held as collateral.
Delays may involve loss

                                       16
<PAGE>   127
of interest or decline in price of the securities.  Apart from the risk of
bankruptcy or insolvency proceedings, there is also the risk that the seller
may fail to repurchase the securities, in which case a Portfolio may incur a
loss if the proceeds to the Portfolio from the sale of the securities to a
third party are less than the repurchase price.

      Reverse Repurchase Agreements-The Portfolios may borrow funds for
temporary purposes by entering into reverse repurchase agreements.  Pursuant to
such agreements, a Portfolio would sell portfolio securities to financial
institutions such as banks and broker/dealers and agree to repurchase them at a
mutually agreed-upon date and price.  The Portfolios intend to enter into
reverse repurchase agreements only to avoid selling securities to meet
redemptions during market conditions deemed unfavorable by the investment
adviser possessing investment authority.  At the time a Portfolio enters into a
reverse repurchase agreement, it will place in a segregated custodial account
assets such as liquid high quality debt securities having a value not less than
100% of the repurchase price (including accrued interest), and will
subsequently monitor the account to ensure that such required value is
maintained.  Reverse repurchase agreements involve the risk that the market
value of the securities sold by a Portfolio may decline below the price at
which such Portfolio is obligated to repurchase the securities.  Reverse
repurchase agreements are considered to be borrowings by an investment company
under the 1940 Act.

      Resource Recovery Obligations-Resource recovery obligations are a type of
municipal revenue obligation issued to build facilities such as solid waste
incinerators or waste-to-energy plants.  Usually, a private corporation will be
involved and the revenue cash flow will be supported by fees or units paid by
municipalities for use of the facilities.  The viability of a resource recovery
project, environmental protection regulations and project operator tax
incentives may affect the value and credit quality of these obligations.

      Revenue Obligations-Revenue obligations are backed by the revenue cash
flow of a project or facility.

      Separately Traded Registered Interest and Principal Securities and Zero
Coupon Obligations-Separately traded registered interest and principal
securities or "STRIPS" and zero coupon obligations are securities that do not
make regular interest payments.  Instead they are sold at a discount from their
face value.  Each Portfolio will take into account as income a portion of the
difference between these obligations' purchase prices and their face values.
Because they do not pay coupon income, the prices of STRIPS and zero coupon
obligations can be very volatile when interest rates change.  STRIPS are zero
coupon bonds issued by the U.S. Treasury.

      Tax, Revenue or Bond Anticipation Notes-Tax, revenue or bond anticipation
notes are issued by municipalities in expectation of future tax or other
revenues which are payable from these specific taxes or revenues.  Bond
anticipation notes usually provide interim financing in advance of an issue of
bonds or notes, the proceeds of which are used to repay the anticipation notes.
Tax-exempt commercial paper is issued by municipalities to help finance
short-term capital or operating needs in anticipation of future tax or other
revenue.

      U.S. Government Securities-U.S. Government securities are issued or
guaranteed by the U.S. Government and include U.S. Treasury obligations (see
definition below) and securities issued by U.S. agencies and instrumentalities.

      U. S. Government agencies or instrumentalities that issue or guarantee
securities include, but are not limited to, the Federal Housing Administration,
Farmers Home Administration, Export-Import Bank of the United States, Small
Business Administration, GNMA, General Services Administration, Central Bank
for Cooperatives, Federal Home Loan Banks, FHLMC, Federal Intermediate Credit
Banks, Federal Land Banks, Maritime Administration, Tennessee Valley Authority,
District of Columbia Armory Board, Inter-American Development Bank,
Asian-American Development Bank, Agency for International Development, Student
Loan Marketing Association and International Bank of Reconstruction and
Development.

      Obligations of U.S. Government agencies and instrumentalities may or may
not be supported by the full faith and credit of the United States.  Some are
backed by the right of the issuer to borrow from the Treasury; others are
supported by discretionary authority of the U.S. Government to purchase the
agencies' obligations; while still others, such as the Student Loan Marketing
Association, are supported only by the credit of the instrumentality.  In the
case of securities not backed by the full faith and credit of the United
States, the investor must look principally to the agency issuing or
guaranteeing the obligation for ultimate repayment, and may not be able to
assert a claim against the United States itself in the event the agency or
instrumentality does not meet its commitment.

                                       17
<PAGE>   128
      U.S. Treasury Obligations-U.S. Treasury obligations include bills, notes
and bonds issued by the U.S. Treasury and Separately Traded Registered Interest
and Principal component parts of such obligations known as STRIPS.

      Variable or Floating Rate Obligations-A variable rate obligation is one
whose terms provide for the adjustment of its interest rate on set dates and
which, upon such adjustment, can reasonably be expected to have a market value
that approximates its par value.  A floating rate obligation is one whose terms
provide for the adjustment of its interest rate whenever a specified interest
rate changes and which, at any time, can reasonably be expected to have a
market value that approximates its par value.  Variable or floating rate
obligations may be secured by bank letters of credit.

      Pursuant to Rule 2a-7 under the 1940 Act, variable or floating rate
obligations with stated maturities of more than 397 days may be deemed to have
shorter maturities as follows:

      (1)  An obligation that is issued or guaranteed by the United States
Government or any agency thereof which has a variable rate of interest
readjusted no less frequently than every 762 days will be deemed by a Portfolio
to have a maturity equal to the period remaining until the next readjustment of
the interest rate.

      (2)  A variable rate obligation, the principal amount of which is
scheduled on the face of the instrument to be paid in 397 days or less, will be
deemed by a Portfolio to have a maturity equal to the period remaining until
the next readjustment of the interest rate.

      (3)  A variable rate obligation that is subject to a demand feature will
be deemed by a Portfolio to have a maturity equal to the longer of the period
remaining until the next readjustment of the interest rate or the period
remaining until the principal amount can be recovered through demand.

      (4)  A floating rate obligation that is subject to a demand feature will
be deemed by a Portfolio to have a maturity equal to the period remaining until
the principal amount can be recovered through demand.

      As used above, an obligation is "subject to a demand feature" when a
Portfolio is entitled to receive the principal amount of the obligation either
at any time on no more than 30 days' notice or at specified intervals not
exceeding one year and upon no more than 30 days' notice.

      Variable Rate Auction and Residual Interest Obligations-Variable rate
auction and residual interest obligations are created when an issuer or dealer
separates the principal portion of a long-term, fixed-rate municipal bond into
two long-term, variable-rate instruments.  The interest rate on one portion
reflects short-term interest rates, while the interest rate on the other
portion is typically higher than the rate available on the original fixed-rate
bond.

                              FINANCIAL STATEMENTS

   
      The American AAdvantage Money Market Funds' and the American AAdvantage
Mileage Funds' Annual Reports to Shareholders for the fiscal year ended October
31,  1997, as audited by Ernst & Young, LLP, are supplied with the SAI, and the
financial statements and accompanying notes appearing therein are incorporated
by reference in this SAI.
    

                                      18
<PAGE>   129
                               TABLE OF CONTENTS


   
<TABLE>
<S>                                                                                                                    <C>
Investment Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1


Trustees and Officers of the Trust and the AMR Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2


Management, Administrative Services and Distribution Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5


Redemptions in Kind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6


Net Asset Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6


Tax Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6


Yield and Total Return Quotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8


Description of the Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10


Control Persons and 5% Shareholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11


Other Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11


Financial Statements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
</TABLE>
    

<PAGE>   130
                       AMERICAN AADVANTAGE MILEAGE FUNDS

                           PART C. OTHER INFORMATION


Item 24.         Financial Statements and Exhibits

         (a)     Financial Statements included as a part of this Registration
Statement:

                 Included in Part A of the Registration Statement:  Financial
Highlights

                 American AAdvantage Mileage Balanced, Growth and Income,
                 International Equity, Short-Term Bond, Money Market, Municipal
                 Money Market and U.S. Government Money Market Funds  -- for
                 the period November 1, 1995 (commencement of operations) to
                 October 31, 1995 and the one year period ended October 31,
                 1996.

                 Platinum Class - American AAdvantage Mileage Money Market
                 Fund:  for the period January 29, 1996 (commencement of
                 offering Platinum Class shares) to October 31, 1996.

                 Platinum Class: American AAdvantage Money Market, Municipal
                 Money Market and U.S. Government Money Market Funds:  - for
                 the period November 7, 1995, (commencement of offering
                 Platinum Class shares) to October 31, 1996.

                 Institutional Class:  American AAdvantage Money Market Fund:
                 for the nine years ended October 31, 1996.  Municipal Money
                 Market Fund: for the period November 10, 1993 (commencement of
                 operations) to October 31, 1994, for the two years ended
                 October 31, 1996.  U.S. Government Money Market Fund: for the
                 period March 2, 1992 (commencement of operations) to October
                 31, 1992, for the four years ended October 31, 1996.

                 Included in Part B of the Registration Statement:  None

         (b)     Exhibits:

                 (1)      Amended and Restated Declaration of Trust - filed
                          herewith
                 (2)      Amended Bylaws - filed herewith

                 (3)      Voting trust agreement  -- none

                 (4)      Specimen security - none

                 (5)      (a)(i)  Management Agreement between American
                                  AAdvantage Mileage Funds and AMR Investment
                                  Services, Inc. dated October 1, 
                                  1995 - filed herewith
<PAGE>   131
                          (a)(ii)  Supplement to Management Agreement dated
                                   December 17, 1996 *

                          (b)(i)   Investment Advisory Agreement between AMR
                                   Investment Services, Inc. and Independence
                                   Investment Associates, Inc. dated November 1,
                                   1995 - filed herewith

                          (b)(ii)  Investment Advisory Agreement between AMR
                                   Investment Services, Inc. and Morgan Stanley
                                   Asset Management Inc. dated November 1, 1995
                                   - filed herewith

                          (b)(iii) Investment Advisory Agreement between AMR 
                                   Investment Services, Inc. and
                                   Templeton Investment Counsel, Inc. dated
                                   November 1, 1995 - filed herewith

                          (b)(iv)  Investment Advisory Agreement between AMR
                                   Investment Services, Inc. and Barrow, Hanley,
                                   Mewhinney & Strause, Inc. dated November 1,
                                   1995 - filed herewith

                          (b)(v)   Investment Advisory Agreement between AMR
                                   Investment Services, Inc. and GSB Investment
                                   Management, Inc. dated November 1, 1995 -
                                   filed herewith

                          (b)(vi)  Investment Advisory Agreement between AMR
                                   Investment Services, Inc. and Brandywine
                                   Asset Management, Inc. dated May 1, 1996 *

                          (b)(vii) Investment Advisory Agreement between AMR 
                                   Investment Services, Inc. and Hotchkis and 
                                   Wiley, a division of the Capital Management
                                   Group of Merrill Lynch Asset Management, 
                                   L.P. dated November 12, 1996 **

                 (6)      Distribution Agreement among the American AAdvantage
                          Mileage Funds, the American AAdvantage Funds and
                          Brokers Transaction Services, Inc. dated September 1,
                          1995 - filed herewith

                 (7)      Bonus, profit sharing or pension plans  -- none

                 (8)      Custodian Agreement between the American AAdvantage
                          Mileage Funds and NationsBank of Texas, N.A. dated
                          November 1, 1995 - filed herewith

                 (9)      Transfer Agency and Registrar Agreement among the
                          American AAdvantage Mileage Funds, AMR Investment
                          Services, Inc. and Goldman, Sachs & Co. dated
                          November 1, 1995 - filed herewith

                 (10)     Opinion and consent of counsel - filed herewith

                 (11)     Consent of Independent Auditors - none

                 (12)     Financial statements omitted from prospectus
                          (not applicable)

                 (13)     Letter of investment intent - filed herewith

                 (14)     Prototype retirement plan -- (not applicable)
<PAGE>   132
                 (15)     (a)     Plan pursuant to Rule 12b-1 for the Mileage
                                  Class - filed herewith
                          (b)     Plan pursuant to Rule 12b-1 for the Platinum
                                  Class - filed herewith
                          (c)     Administrative Services Plan for the
                                  Platinum Class - filed herewith
                 (16)     Schedule for Computation of Performance Quotations -
                          filed herewith

                 (17)     Financial Data Schedules - none

                 (18)     Plan Pursuant to Rule 18f-3 - filed herewith

                          Other:   Powers of Attorney for Trustees **

- - ------------------
*        Incorporated by reference to Post-Effective Amendment No. 3 to the
         American AAdvantage Mileage Funds' Registration Statement on Form N-1A
         as filed with the Securities and Exchange Commission on May 1, 1996.
**       Incorporated by reference to Post-Effective Amendment No. 4 to the
         American AAdvantage Mileage Funds' Registration Statement on Form N-1A
         as filed with the Securities and Exchange Commission on February 13,
         1997.

Item 25.         Persons Controlled by or under
                 Common Control with Registrant

                 None.

Item 26.         Number of Holders of Securities

<TABLE>
<CAPTION>
                                                           Number of Record Holders
Title of Fund                                              as of November 30, 1997
- - -------------                                              -----------------------
<S>                                                         <C>
American AAdvantage Mileage Funds:
         Balanced Mileage Fund                              130
         Growth and Income Mileage Fund                     311
         Short -Term Bond Mileage Fund                       22
         international Equity Mileage Fund                  199
         Money Market Mileage Fund                        1,421
         Municipal Money Market Mileage Fund                245
         U.S. Government Money Market Mileage Fund          166
Platinum Class:
         Money Market Mileage Fund                          978
</TABLE>





<PAGE>   133
Item 27.         Indemnification

         Article XI, Section 2 of the Declaration of Trust of the Mileage Trust
provides that:

         (a)     Subject to the exceptions and limitations contained in
paragraph (b) below:

                (i)  every person who is, or has been, a Trustee or officer of
                     the Mileage Trust (hereinafter referred to as "Covered
                     Person") shall be indemnified by the appropriate
                     portfolios to the fullest extent permitted by law against
                     liability and against all expenses reasonably incurred or
                     paid by him in connection with any claim, action, suit or
                     proceeding in which he becomes involved as a party or
                     otherwise by virtue of his being or having been a Trustee
                     or officer and against amounts paid or incurred by him in
                     the settlement thereof;

                (ii) the words "claim," "action," "suit," or "proceeding" shall
                     apply to all claims, actions, suits or proceedings (civil,
                     criminal or other, including appeals), actual or threatened
                     while in office or thereafter, and the words "liability"
                     and "expenses" shall include, without limitation,
                     attorneys' fees, costs, judgments, amounts paid in
                     settlement, fines, penalties and other liabilities.

         (b)     No indemnification shall be provided hereunder to a Covered
Person:

                 (i)      who shall have been adjudicated by a court or body
before which the proceeding was brought (A) to be liable to the Mileage Trust
or its Shareholders by reason of willful misfeasance, bad faith, gross
negligence or reckless disregard of the duties involved in the conduct of his
office or (B) not to have acted in good faith in the reasonable belief that his
action was in the best interest of the Mileage Trust; or

                 (ii)     in the event of a settlement, unless there has been a
determination that such Trustee or officer did not engage in willful
misfeasance, bad faith, gross negligence or reckless disregard of the duties
involved in the conduct of his office (A) by the court or other body approving
the settlement; (B) by at least a majority of those Trustees who are neither
interested persons of the Mileage Trust nor are parties to the matter based
upon a review of readily available facts (as opposed to a full trial-type
inquiry); or (C) by written opinion of independent legal counsel based upon a
review of readily available facts (as opposed to a full trial-type inquiry);
provided, however, that any Shareholder may, by appropriate legal proceedings,
challenge any such determination by the Trustees, or by independent counsel.

         (c)     The rights of indemnification herein provided may be insured
against by policies maintained by the Mileage Trust, shall be severable, shall
not be exclusive of or affect any other rights to which any Covered Person may
now or hereafter be entitled, shall continue as to a person who has ceased to
be such Trustee or officer and shall inure to the benefit of the heirs,
executors and administrators of such a person. Nothing contained herein shall
affect any rights to indemnification to which Mileage Trust personnel, other
than Trustees and officers, and other persons may be entitled by contract or
otherwise under law.

         (d)     Expenses in connection with the preparation and presentation
of a defense to any





<PAGE>   134
claim, action, suit, or proceeding of the character described in paragraph (a)
of this Section 2 may be paid by the applicable Portfolio from time to time
prior to final disposition thereof upon receipt of an undertaking by or on
behalf of such Covered Person that such amount will be paid over by him to the
Mileage Trust if it is ultimately determined that he is not entitled to
indemnification under this Section 2; provided, however, that:

                 (i)      such Covered Person shall have provided appropriate
security for such undertaking;

                 (ii)     the Mileage Trust is insured against losses arising
out of any such advance payments; or

                 (iii) either a majority of the Trustees who are neither
interested persons of the Mileage Trust nor parties to the matter, or
independent legal counsel in a written opinion, shall have determined, based
upon a review of readily available facts (as opposed to a trial-type inquiry or
full investigation), that there is reason to believe that such Covered Person
will be found entitled to indemnification under this Section 2.

         According to Article XII, Section 1 of the Declaration of Trust, the
Mileage Trust is a trust, not a partnership.  Trustees are not liable
personally to any person extending credit to, contracting with or having any
claim against the Mileage Trust, a particular Portfolio or the Trustees.  A
Trustee, however, is not protected from liability due to willful misfeasance,
bad faith, gross negligence or reckless disregard of the duties involved in the
conduct of his office.

         Article XII, Section 2 provides that, subject to the provisions of
Section 1 of Article XII and to Article XI, the Trustees are not liable for
errors of judgment or mistakes of fact or law, or for any act or omission in
accordance with advice of counsel or other experts or for failing to follow
such advice.

Item 28.    I.   Business and Other Connections of Investment Manager

         AMR Investment Services, Inc., 4333 Amon Carter Boulevard, MD 5645,
Fort Worth, Texas  76155, offers investment management and administrative
services.  Information as to the officers and directors of the Manager is
included in its current Form ADV filed with the SEC and is incorporated by
reference herein.

                 II.      Business and Other Connections of Investment Advisers

         The investment advisers listed below provide investment advisory
services to the Mileage Trust.

         Barrow, Hanley, Mewhinney & Strauss, 3232 McKinney Avenue, Dallas,
Texas  75204.

         Brandywine Asset Management, Inc., 201 North Walnut Street,
Wilmington, Delaware  19801.





<PAGE>   135
         GSB Investment Management, Inc., 301 Commerce Street, Suite 1501, Fort
Worth, Texas  76102.

         Hotchkis & Wiley, 800 West Sixth Street, 5th Floor, Los Angeles,
California  90017.

         Independence Investment Associates, Inc., 53 State Street, Boston,
Massachusetts  02109.

         Morgan Stanley Asset Management Inc., 1221 Avenue of the Americas,
21st Floor, New York, New York  10020.

         Templeton Investment Counsel, Inc. 500 East Broward Blvd., Ft.
Lauderdale, Florida  33394.

         Information as to the officers and directors of each of the above
investment advisers is included in that adviser's current Form ADV filed with
the SEC and is incorporated by reference herein.

Item 29.         Principal Underwriter

                 (a)      Brokers Transaction Services, Inc., 7001 Preston
Road, Dallas, TX  75205, is the principal underwriter for the Mileage Trust and
the American AAdvantage Funds.

                 (b) The directors and officers of the Mileage Trust's
principal underwriter are:

<TABLE>
<CAPTION>
                                     Positions & Offices                                Position
Name                                  with Underwriter                                  with Registrant
- - ----                                 -------------------                                ---------------
<S>                                  <C>                                                <C>
Don A. Buckholz                      Chairman, Director and Chief                       None
                                     Executive Officer

Raymond E. Wooldridge                Chief Operating Officer,                           None
                                     Director and President

William D. Felder                    Director, Executive Vice                           None
                                     President

Sue H. Peden                         Vice President                                     None
</TABLE>





<PAGE>   136
Item 30.         Location of Accounts and Records

         The books and other documents required by Rule 31a-1 under the
Investment Company Act of 1940 are maintained as follows:  31a-1(b)(1) -
Journals - in the physical possession of the Trust's custodian (NationsBank of
Texas, N.A.); 31- 1(b)(2)(I), (ii) & (iii) - in the physical possession of the
Trust's custodian; 31a-1()(2)(iv) - in the physical possession of the Trust's
transfer agents (NationsBank of Texas, N.A. and Goldman, Sachs & Co.);
31a-1(b)(4) - in the physical possession of the Trust's Manager; 31a-1(b)(5) -
in the physical possession of the Trust's investment advisers; 31a-1(b)(6) - in
the physical possession of the Trust's Manager, investment advisers and
custodian; 31a-1(b)(7) - in the physical possession of the Trust's custodian;
31a-1(b)(8) - in the physical possession of the Trust's custodian; 31a- 1(b)(9)
- - - in the physical possession of the Trust's investment advisers; 31a-1(b)(10) -
in the physical possession of the Trust's Manager; 31a-1(b)(11) - in the
physical possession of the Trust's Manager; 31a-1(b)(12) - in the physical
possession of the Trust's Manager, investment advisers and custodian.

Item 31.         Management Services

                 All substantive provisions of any management-related service
contract are discussed in Part A or Part B.

Item 32.         Undertakings

         Registrant hereby undertakes to furnish each person to whom a
prospectus is delivered with a copy of its latest annual report to
Shareholders, upon request and without charge.

         Registrant hereby undertakes to carry out all indemnification
provisions of its Declaration of Trust in accordance with Investment Company
Act Release No. 11330 (September 4, 1980) and successor releases.

         Insofar as indemnification for liability arising under the Securities
Act of 1933, as amended ("1933 Act"), may be permitted to trustees, officers
and controlling persons of the Registrant pursuant to the provisions in under
Item 27 herein, or otherwise, the Registrant has been advised that in the
opinion of the SEC such indemnification is against public policy as expressed
in the 1933 Act and is, therefore, unenforceable.  In the event that a claim
for indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a trustee, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such trustee, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the 1933
Act and will be governed by the final adjudication.





<PAGE>   137

                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as
amended, and the Investment Company Act of 1940, as amended, the Registrant has
duly caused this Post-Effective Amendment No. 5 to its Registration Statement
on Form N-1A to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Fort Worth and the State of Texas on December 15,
1997.

                                               AMERICAN AADVANTAGE MILEAGE FUNDS

                                               By: /s/ William F. Quinn
                                                   -----------------------------
                                                   William F. Quinn
                                                   President
Attest:

/s/ Barry Y. Greenberg
- - --------------------------------------
Barry Y. Greenberg
Vice President and Assistant Secretary

         Pursuant to the requirements of the Securities Act of 1933, as
amended, this Post-Effective Amendment No. 5 to the Registration Statement has
been signed below by the following persons in the capacities and on the dates
indicated.

<TABLE>
<CAPTION>


Signature                                    Title                            Date
- - ---------                                    -----                            ----
<S>                                        <C>                        <C> 
/s/ William F. Quinn                        President and               December 15, 1997
- - -------------------------                   Trustee
William F. Quinn

Alan D. Feld*                               Trustee                     December 15, 1997
- - -------------------------
Alan D. Feld

Ben J. Fortson*                             Trustee                     December 15, 1997
- - -------------------------
Ben J. Fortson

John S. Justin*                             Trustee                     December 15, 1997
- - -------------------------
John S. Justin

Stephen D. O'Sullivan*                      Trustee                     December 15, 1997
- - -------------------------
Stephen D. O'Sullivan

Roger T. Staubach*                          Trustee                     December 15, 1997
- - -------------------------
Roger T. Staubach

Dr. Kneeland Youngblood *                   Trustee                     December 15, 1997
- - -------------------------
Dr. Kneeland Youngblood

*By   /s/ William F. Quinn
      ----------------------------------
      William F. Quinn, Attorney-In-Fact
</TABLE>


<PAGE>   138


                                   SIGNATURES
         Pursuant to the requirements of the Securities Act of 1933, as
amended, and the Investment Company Act of 1940, as amended, AMR Investment
Services Trust has duly caused this Post-Effective Amendment No. 5 to the
Registration Statement on Form N-1A as it relates to the AMR Investment
Services Trust to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Fort Worth and the State of Texas on December 15,
1997.

                                                   AMR INVESTMENT SERVICES TRUST

                                                   By: /s/ William F. Quinn
                                                       -------------------------
                                                           William F. Quinn
                                                           President
Attest:

/s/ Barry Y. Greenberg
- - -------------------------
Barry Y. Greenberg
Vice President and Assistant Secretary

         Pursuant to the requirements of the Securities Act of 1933, as
amended, this Post-Effective Amendment No. 5 to the Registration Statement for
the American AAdvantage Mileage Funds has been signed below by the following
persons in the capacities and on the dates indicated.


<TABLE>
<CAPTION>

Signature                                               Title                 Date
- - ---------                                               -----                 ----
<S>                                                 <C>                  <C> 
/s/ William F. Quinn                                 President and        December 15, 1997
- - -------------------------                            Trustee
William F. Quinn

Alan D. Feld*                                        Trustee              December 15, 1997
- - -------------------------
Alan D. Feld

Ben J. Fortson*                                      Trustee              December 15, 1997
- - -------------------------
Ben J. Fortson

John S. Justin*                                      Trustee              December 15, 1997
- - -------------------------
John S. Justin

Stephen D. O'Sullivan*                               Trustee              December 15, 1997
- - -------------------------
Stephen D. O'Sullivan

Roger T. Staubach*                                   Trustee              December 15, 1997
- - -------------------------
Roger T. Staubach

Dr. Kneeland Youngblood *                            Trustee              December 15, 1997
- - -------------------------
Dr. Kneeland Youngblood

*By    /s/ William F. Quinn
       ----------------------------------
       William F. Quinn, Attorney-In-Fact
</TABLE>



<PAGE>   139

                                   SIGNATURES

   
         Equity 500 Index Portfolio has duly caused this Post-Effective
Amendment No. 5 to the Registration Statement on Form N-1A of the American
AAdvantage Mileage Funds, as it relates to the American AAdvantage S&P 500 
Index Mileage Fund, to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Pittsburgh and the Commonwealth of
Pennsylvania on December 15, 1997.
    

                                                      EQUITY 500 INDEX PORTFOLIO

                                                      By: Ronald M. Petnuch*
                                                          ----------------------
                                                            Ronald M. Petnuch
                                                            President

         This Post-Effective Amendment No. 5 to the Registration Statement on
Form N-1A of American AAdvantage Mileage Funds has been signed below by the
following persons in the capacities indicated with respect to the Equity 500
Index Portfolio and on December 15, 1997.

<TABLE>
<CAPTION>

Signature                                  Title
- - ---------                                  -----
<S>                                      <C>
Charles P Biggar*                          Trustee
- - -----------------------
Charles P. Biggar

Leland Dill*                               Trustee
- - -----------------------
S. Leland Dill

Philip Saunders, Jr.*                      Trustee
- - -----------------------
Philip Saunders, Jr.

Ronald M. Petnuch*                         President and Treasurer (Chief Executive Officer,  
- - -----------------------                    Principal Financial and Accounting Officer)
Ronald M. Petnuch                                      


By   /s/ Jay S. Neuman
     -----------------------------------
     Jay S. Neuman, Secretary of the Equity 500 Index Portfolio,
     as Attorney-in-Fact pursuant to a Power of Attorney
</TABLE>

<PAGE>   140






                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>

Exhibit
Number            Description                                                                    Page
- - -------           -----------                                                                    ----

<S>                                                                                              <C> 
(1) Amended and Restated Declaration of Trust - filed herewith

(2) Amended Bylaws - filed herewith

(3) Voting trust agreement -- none

(4) Specimen security - none

(5) (a)(i)    Management Agreement between American AAdvantage Mileage Funds and
              AMR Investment Services, Inc. dated October 1, 1995 - filed 
              herewith

    (a)(ii)   Supplement to Management Agreement dated December 17, 1996 *

    (b)(i)    Investment Advisory Agreement between AMR Investment Services,  
              Inc. and Independence  Investment Associates, Inc. dated November 
              1, 1995 - filed herewith

    (b)(ii)   Investment Advisory Agreement between AMR Investment Services, 
              Inc. and Morgan Stanley Asset Management Inc. dated November 1, 
              1995 - filed herewith

    (b)(iii)  Investment Advisory Agreement between AMR Investment Services,  
              Inc. and Templeton  Investment Counsel, Inc. dated November 1, 
              1995 - filed herewith

    (b)(iv)   Investment Advisory Agreement between AMR Investment Services, 
              Inc. and Barrow, Hanley, Mewhinney & Strause, Inc. dated November 
              1, 1995 - filed herewith

    (b)(v)    Investment Advisory Agreement between AMR Investment Services, 
              Inc. and GSB Investment Management, Inc. dated November 1, 
              1995 - filed herewith

    
   
    (b)(vi)   Investment Advisory Agreement between AMR Investment Services, 
              Inc. and Brandywine Asset Management, Inc. dated May 1, 
              1996 * 
    

   
    (b)(vii)  Investment Advisory Agreement between AMR Investment Services,  
              Inc. and Hotchkis and Wiley, a division of the Capital Management
              Group of Merrill Lynch Asset Management,  L.P. dated November
              12, 1996 **
    

(6) Distribution Agreement among the American AAdvantage Mileage Funds, the
    American AAdvantage Funds and Brokers Transaction Services, Inc. dated
    September 1, 1995 - filed herewith

(7) Bonus, profit sharing or pension plans -- none

(8) Custodian Agreement between the American AAdvantage Mileage Funds and
    NationsBank of Texas, N.A. dated November 1, 1995 - filed herewith

(9) Transfer Agency and Registrar Agreement among the American AAdvantage
    Mileage Funds, AMR Investment Services, Inc. and Goldman, Sachs & Co.
    dated November 1, 1995 - filed herewith

(10)Opinion and consent of counsel - filed herewith


</TABLE>



<PAGE>   141


<TABLE>

<S>                                                      <C>
(11)Consent of Independent Auditors - none

(12)Financial statements omitted from prospectus  (not applicable)

(13)Letter of investment intent - filed herewith

(14)Prototype retirement plan -- (not applicable)

   
(15)(a)  Plan pursuant to Rule 12b-1 for the Mileage Funds - filed herewith
    (b)  Plan pursuant to Rule 12b-1 for the Platinum Class - filed herewith
    (c)  Administrative Services Plan for the  Platinum Class - filed herewith
    

(16)Schedule for Computation of Performance Quotations - filed herewith

(17)Financial Data Schedules - none

(18)Plan Pursuant to Rule 18f-3 - filed herewith

Other: Powers of Attorney for Trustees *

</TABLE>

- - -----------------------
   
*        Incorporated by reference to Post-Effective Amendment No .3 to the
         American Advantage Mileage Funds' Registration Statement on
         Form N-1A as filed with the Securities and Exchange Commission on
         May 1, 1996.
    

   

**       Incorporated by reference to Post-Effective Amendment No. 4 to the
         American AAdvantage Mileage Funds' Registration Statement on Form N-1A
         as filed with the Securities and Exchange Commission on February 13,
         1997.
    

 

<PAGE>   1


                      AMERICAN AADVANTAGE(R) MILEAGE FUNDS

                              AMENDED AND RESTATED

                              DECLARATION OF TRUST
<PAGE>   2

                       AMERICAN AADVANTAGE MILEAGE FUNDS

                              AMENDED AND RESTATED
                              DECLARATION OF TRUST

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                       Page
<S>                                                                    <C>
ARTICLE I--THE TRUST..................................................  1
         Section 1:  Name.............................................  1
         Section 2:  Principal Place of Business .....................  1
         Section 3:  Resident Agent...................................  2
         Section 4:  Definitions......................................  2

ARTICLE II--PURPOSE OF TRUST .........................................  3

ARTICLE III--BENEFICIAL INTEREST......................................  3
         Section 1:  Shares of Beneficial Interest ...................  3
         Section 2:  Ownership of Shares..............................  3
         Section 3:  Investment in the Trust .........................  3
         Section 4:  Assets and Liabilities of the Trust..............  4
         Section 5:  No Preemptive Rights.............................  4
         Section 6:  Limitation on Personal Liability.................  4

ARTICLE IV--THE TRUSTEES .............................................  5
         Section 1:  Management of the Trust..........................  5
         Section 2:  Election of Trustees.............................  5
         Section 3:  Term of Office of Trustees.......................  6
         Section 4:  Resignation and Appointment of
                     Trustees.........................................  6
         Section 5:  Temporary Absence of Trustee.....................  6
         Section 6:  Number of Trustees...............................  6
         Section 7:  Effect of Death, Resignation, Etc.
                     of a Trustee.....................................  6
         Section 8:  Ownership of Trust Assets........................  7

ARTICLE V--POWERS OF THE TRUSTEES ....................................  7
         Section 1:  Powers...........................................  7
         Section 2:  Trustees and Officers as Shareholders............ 10
         Section 3:  Action by the Trustees........................... 10
         Section 4:  Chairman of the Trustees......................... 10

ARTICLE VI--EXPENSES OF THE TRUST..................................... 10

ARTICLE VII--INVESTMENT ADVISER, PRINCIPAL UNDERWRITER AND
                     TRANSFER AGENT................................... 11
         Section 1:  Investment Adviser............................... 11
</TABLE>



                                     - i -
<PAGE>   3
<TABLE>
<S>                                                                    <C>
         Section 2:  Principal Underwriter............................ 12
         Section 3:  Transfer Agent................................... 12
         Section 4:  Parties to Contract.............................. 12
         Section 5:  Provisions and Amendments........................ 13

ARTICLE VIII--SHAREHOLDERS' VOTING POWERS AND MEETINGS ............... 13
         Section 1:  Voting Powers.................................... 13
         Section 2:  Meetings......................................... 14
         Section 3:  Quorum and Required Vote......................... 14

ARTICLE IX--CUSTODIAN................................................. 15
         Section 1:  Appointment and Duties........................... 15
         Section 2:  Employment of Sub-Custodians..................... 15
         Section 3:  Central Certificate System....................... 16

ARTICLE X--DISTRIBUTIONS AND REDEMPTIONS.............................. 16
         Section 1:  Distributions.................................... 16
         Section 2:  Redemptions...................................... 16
         Section 3:  Determination of Net Asset Value
                     and Valuation of Portfolio Assets................ 17
         Section 4:  Suspension of the Right of Redemption............ 17

ARTICLE XI--LIMITATION OF LIABILITY AND INDEMNIFICATION............... 18
         Section 1:  Limitation of Liability.......................... 18
         Section 2:  Indemnification.................................. 18
         Section 3:  Shareholders..................................... 20

ARTICLE XII--MISCELLANEOUS............................................ 20
         Section 1:  Trust Not A Partnership.......................... 21
         Section 2:  Trustee's Good Faith Action, Expert
                     Advice, No Bond or Surety........................ 21
         Section 3:  Establishment of Record Dates.................... 21
         Section 4:  Termination of Trust............................. 22
         Section 5:  Filing of Copies, References,
                             Headings................................. 22
         Section 6:  Applicable Law................................... 23
         Section 7:  Amendments....................................... 23
         Section 8:  Fiscal Year...................................... 23
         Section 9:  Use of the Words "American AAdvantage"
                     and "American Airlines".......................... 24
         Section 10: Notice to Other Parties.......................... 24
</TABLE>



                                    - ii -
<PAGE>   4
                                                                  EXHIBIT 99.B.1


                       AMERICAN AADVANTAGE MILEAGE FUNDS

                              AMENDED AND RESTATED

                              DECLARATION OF TRUST



         This AMENDED AND RESTATED DECLARATION OF TRUST is made on July 19,
1995, by the undersigned Trustees and by the holders of Shares of beneficial
interest to be issued hereunder as hereinafter provided.

         WITNESSETH that

         WHEREAS, this Trust was formed to carry on the business of an
investment company pursuant to a Declaration of Trust dated February 14, 1995;
and

         WHEREAS, the Trustees have agreed to manage all property coming into
their hands as trustees of a Massachusetts voluntary association with
transferable Shares in accordance with the provisions hereinafter set forth;
and

         WHEREAS, the Trustees hereby desire to amend and restate the
Declaration of Trust in its entirety.

         NOW, THEREFORE, the Trustees hereby declare that they will hold all
cash, securities and other assets, which they may from time to time acquire in
any manner as Trustees hereunder IN TRUST to manage and dispose of the same
upon the following terms and conditions for the pro rata benefit of the holders
from time to time of Shares in this Trust as hereinafter set forth.

                                   ARTICLE I
                                   THE TRUST

NAME

         SECTION 1. This Trust (formerly called the "American AAdvantage Funds
II") shall be known as the "American AAdvantage Mileage Funds" and the Trustees
shall conduct the business of the Trust under that name or any other name as
they may from time to time determine.

PRINCIPAL PLACE OF BUSINESS

         SECTION  2.  The principal  place of business of the Trust shall be 
4333 Amon Carter Boulevard, Fort Worth, Texas 76155.


<PAGE>   5


RESIDENT AGENT

         SECTION 3.3. The resident agent for the Trust in Massachusetts shall
be CT Corporation, 2 Oliver Street, Boston, Massachusetts, or such other person
as the Trustees may from time to time designate. 

DEFINITIONS

         SECTION 4. Wherever used herein, unless otherwise required by the
context or specifically provided:

                  (a) The terms "Affiliated Person," "Assignment,"
         "Commission," "Interested Person," "Majority Shareholder Vote" (the
         67% or 50% requirement of the third sentence of Section 2(42) of the
         1940 Act, whichever may be applicable) and "Principal Underwriter"
         shall have the meanings given them in the 1940 Act, as amended from
         time to time;

                  (b) The "Trust" refers to the American AAdvantage Mileage
         Funds;

                  (c) "Net Asset Value" means the net asset value of each Trust
         series as determined in the manner provided in Article X, Section 3;

                  (d) "Shareholder" means a record owner of Shares of the
         Trust;

                  (e) The "Trustees" refers to the individual trustees in their
         capacity as trustees hereunder of the Trust and their successor or
         successors for the time being in office as such trustee or trustees;

                  (f) "Shares" means the equal proportionate transferable units
         of interest into which the beneficial interest of the Trust shall be
         divided from time to time, and includes fractions of shares as well as
         whole shares consistent with the requirements of federal and/or other
         securities laws;

                  (g) The "1940 Act" refers to the Investment Company Act of
         1940, as amended from time to time;

                  (h) "Declaration of Trust" shall mean this Declaration of
         Trust as amended or restated from time to time; and

                  (i) "Bylaws" shall mean the Bylaws of the Trust as amended
         from time to time.



                                     - 2 -
<PAGE>   6


                                   ARTICLE II
                                PURPOSE OF TRUST

         The purpose of this Trust is to provide investors, through one or more
investment portfolios or series as designated by the Trustees, with a
continuous source of managed investments in securities.

                                  ARTICLE III
                              BENEFICIAL INTEREST

SHARES OF BENEFICIAL INTEREST

         SECTION 1. The Shares of the Trust shall be issued in one or more
series and/or classes as the Trustees may, without shareholder approval,
authorize. Each series shall be preferred over all other series in respect of
the assets allocated to that series. The beneficial interest in each series
shall at all times be divided into Shares, with or without par value as the
Trustees may specify, each of which shall represent an equal proportionate
interest in the series with each other Share of the same series, none having
priority or preference over another. Each series shall be represented by one or
more classes of Shares, with each class possessing such rights (including,
notwithstanding any contrary provision herein, voting rights) as the Trustees
may, without Shareholder approval, authorize. Shares of each series, when
issued, shall be fully paid and non-assessable. The number of Shares authorized
shall be unlimited, and the Shares so authorized may be represented in part by
fractional Shares. The Trustees may from time to time and without Shareholder
approval divide or combine the Shares of any series or class into a greater or
lesser number without thereby changing the proportionate beneficial interests
in the series.

OWNERSHIP OF SHARES

         SECTION 2. The ownership of Shares shall be recorded in the books of
the Trust. The Trustees may make such rules as they consider appropriate for
the transfer of Shares and similar matters. The record books of the Trust shall
be conclusive as to who are the holders of Shares and as to the number of
Shares held from time to time by each Shareholder.

INVESTMENT IN THE TRUST

         SECTION 3. The Trustees shall accept investments in the Trust from
such persons and on such terms as they may from time to time authorize. As
determined by guidelines established by the Trustees, such investments may be
in the form of cash or 


                                     - 3 -
<PAGE>   7

securities in which the Trust (or each designated series) is authorized to
invest, valued as provided in Article X, Section 3. Investments in the Trust
shall be credited to each Shareholder's account in the form of full or
fractional Shares at the Net Asset Value per Share next determined after the
investment is received; provided, however, that the Trustees may, in their sole
discretion: (a) impose a sales charge upon investments in the Trust and (b)
issue fractional Shares. The Trustees shall have the right to refuse to accept
investments in the Trust at any time without any cause or reason whatsoever.

ASSETS AND LIABILITIES OF THE TRUST

         SECTION 4. All consideration received by the Trust for the issue or
sale of Shares of a particular series, together with all assets in which such
consideration is invested or reinvested, all income, earnings, profits, and
proceeds thereof, including any proceeds derived from the sale, exchange or
liquidation of such assets, and any funds or payments derived from any
reinvestment of such proceeds in whatever form the same may be, shall be
referred to as "assets belonging to" that series and shall be held by the
Trustees in Trust for the benefit of the Shareholders of that series. The
assets belonging to each particular series shall be charged with the
liabilities of that series and all expenses, costs, charges and reserves
attributable to that series. In addition, any assets, income, earnings,
profits, and proceeds thereof, funds, or payments or any general liabilities,
expenses, costs, charges or reserves of the Trust which are not readily
identifiable as belonging to or chargeable to any particular series shall be
allocated by the Trustees between and among one or more of the series in such
manner as they, in their sole discretion, deem fair and equitable. Each such
allocation shall be conclusive and binding upon the Shareholders of all series
for all purposes, and shall be referred to as assets belonging to that series.
Any creditor of any series may look only to the assets of that series to
satisfy such creditor's debt.

NO PREEMPTIVE RIGHTS

         SECTION 5. Shareholders shall have no preemptive or other right to
subscribe to any additional Shares or other securities issued by the Trust or
the Trustees.

LIMITATION ON PERSONAL LIABILITY

         SECTION 6. The Trustees shall have no power to bind any Shareholder
personally or to call upon any Shareholder for the payment of any sum of money
or assessment whatsoever other than such as the Shareholder may at any time
personally agree to pay by way of subscription for any Shares or otherwise.
Every note, 


                                     - 4 -
<PAGE>   8

bond, contract or other undertaking issued by or on behalf of the Trust or the
Trustees relating to the Trust shall include a recitation limiting the
obligation represented thereby to the Trust and its assets (but the omission of
such a recitation shall not operate to bind any Shareholder).


                                   ARTICLE IV
                                  THE TRUSTEES

MANAGEMENT OF THE TRUST

         SECTION 1. The business and affairs of the Trust shall be managed by
the Trustees, and they shall have all powers necessary and desirable to carry
out that responsibility.

ELECTION OF TRUSTEES

         SECTION 2. On a date fixed by the Trustees, the Shareholders shall
elect not less than three Trustees. A Trustee shall not be required to be a
Shareholder of the Trust. Until such election, the Trustees shall be William F.
Quinn, David G. Fox, John S. Justin, Stephen D. O'Sullivan and Roger T.
Staubach, and such other individuals as the Board of Trustees shall appoint
pursuant to Section 4 of Article IV.

TERM OF OFFICE OF TRUSTEES

         SECTION 3. The Trustees shall hold office during the lifetime of this
Trust, and until its termination as hereinafter provided, except that: (a) any
Trustee may resign his or her trust by written instrument signed by him or her
and delivered to the Trust's President or the other Trustees, which resignation
shall take effect upon such delivery or upon such later date as is specified
therein; (b) any Trustee may be removed at any time by written instrument,
signed by at least two-thirds of the number of Trustees prior to such removal,
specifying the date when such removal shall become effective; (c) a Trustee may
be removed at any Special Meeting of Shareholders of the Trust by a vote of
two-thirds of the outstanding Shares; and (d) every Trustee (except Messrs.
William F. Quinn, David G. Fox, Stephen D. O'Sullivan and John S. Justin) must
resign his or her trust effective no later than the last day of the calendar
year in which such Trustee becomes seventy (70) years of age. Upon the
resignation or removal of a Trustee, or his or her otherwise ceasing to be a
Trustee, he or she shall execute and deliver such documents as the remaining
Trustees shall require for the purpose of conveying to the Trust or the
remaining Trustees any Trust Property held in the name of the resigning or
removed Trustee. Upon the incapacity or death of any Trustee, his legal



                                     - 5 -
<PAGE>   9

representative shall execute and deliver on his or her behalf such documents as
the remaining Trustees shall require as provided in the preceding sentence.



                                     - 6 -

<PAGE>   10
RESIGNATION AND APPOINTMENT OF TRUSTEES

         SECTION 4. Any vacancy on the Board of Trustees that results from an
increase in the number of Trustees may be filled by a majority of the entire
Board of Trustees, provided that a quorum is present, and any other vacancy
that shall exist for any reason, including, but not limited to, declination to
assume office, death, resignation, or removal, the remaining Trustees shall
fill such vacancy by appointing such other person as they in their discretion
shall see fit, consistent with the limitations under the 1940 Act. Such
appointment shall be evidenced by a written instrument signed by a majority of
the Trustees in office or by recording in the records of the Trust, whereupon
the appointment shall take effect. An appointment of a Trustee may be made by
the Trustees then in office in anticipation of a vacancy to occur by reason of
retirement, resignation or increase in number of Trustees effective at a later
date, provided that said appointment shall become effective only at or after
the effective date of said retirement, resignation or increase in number of
Trustees. As soon as any Trustee so appointed shall have accepted this trust,
the trust estate shall vest in the new Trustee or Trustees, together with the
continuing Trustees, without any further act or conveyance, and he or she shall
be deemed a Trustee hereunder. The power of appointment of Trustees is subject
to the provisions of Section 16(a) of the 1940 Act.

TEMPORARY ABSENCE OF TRUSTEE 

         SECTION 5. Any Trustee may, by power of attorney, delegate his or her
power for a period not exceeding six months at any one time to any other
Trustee or Trustees, provided that in no case shall less than two Trustees
personally exercise the other powers hereunder, except as herein otherwise
expressly provided.

NUMBER OF TRUSTEES

         SECTION 6. The number of Trustees serving hereunder at any time shall
be determined by the Trustees themselves and shall not be less than three (3)
nor more than twelve (12). Whenever a vacancy in the Board of Trustees shall
occur, until such vacancy is filled, or while any Trustee is physically or
mentally incapacitated by reason of disease or otherwise, the other Trustees
shall have all the powers hereunder and the certificate of the other Trustees
of such vacancy, absence or incapacity, shall be conclusive.

EFFECT OF DEATH, RESIGNATION, ETC. OF A TRUSTEE

         SECTION 7. The death, declination, resignation, retirement, removal,
incapacity, or inability of the Trustees, or any one of 



                                     - 7 -
<PAGE>   11

them, shall not operate to annul the Trust or to revoke any existing agency
created pursuant to the terms of this Declaration of Trust.

OWNERSHIP OF TRUST ASSETS

         SECTION 8. The assets of the Trust shall be held separate and apart
from any assets now or hereafter held in any capacity other than as Trustee
hereunder by the Trustees or any successor Trustees. All of the assets of the
Trust shall at all times be considered as vested in the Trustees. No
Shareholder shall be deemed to have a severable ownership in any individual
asset of the Trust or any right of partition or possession thereof, but each
Shareholder shall have a proportionate undivided beneficial interest in the
Trust.


                                   ARTICLE V
                             POWERS OF THE TRUSTEES

POWERS

         SECTION 1. The Trustees in all instances shall act as principals, and
are and shall be free from the control of the Shareholders. The Trustees shall
have full power and authority to do any and all acts and to make and execute
any and all contracts and instruments that they may consider necessary or
appropriate in connection with the management of the Trust. The Trustees shall
not in any way be bound or limited by present or future laws or customs in
regard to trust investments, but shall have full authority and power to make
any and all investments which they, in their uncontrolled discretion, shall
deem proper to accomplish the purpose of this Trust. Without limiting the
foregoing, but subject to any applicable limitation in the Declaration of Trust
or the Bylaws of the Trust, the Trustees shall have power and authority:

                  (a) To invest and reinvest cash and other property, and to
         hold cash or other property uninvested, without in any event being
         bound or limited by any present or future law or custom in regard to
         investments by Trustees, and to sell, exchange, lend, pledge,
         mortgage, hypothecate, write options on and lease any or all of the
         assets of the Trust.

                  (b) To adopt Bylaws not inconsistent with this Declaration of
         Trust providing for the conduct of the business of the Trust and to
         amend and repeal them to the extent that the rights of amendment and
         repeal are not reserved to Shareholders.


                                     - 8 -
<PAGE>   12
                  (c) To elect and remove such officers and appoint and
         terminate such agents as they consider appropriate.
     
                  (d) To employ a bank or trust company as Custodian of any
         assets of the Trust subject to any conditions set forth in this
         Declaration of Trust or in the Bylaws, if any.

                  (e) To retain a transfer agent and Shareholder servicing
         agent, or both.

                  (f) To provide for the distribution of interests of the Trust
         either through a principal underwriter in the manner hereinafter
         provided for or by the Trust itself, or both.

                  (g)  To set record dates in the manner hereinafter provided.

                  (h) To delegate such authority as they consider desirable to
         any officers of the Trust and to any agent, Custodian or underwriter.

                  (i) To sell or exchange any or all of the assets of the
         Trust, subject to the provisions of Article XII, Section 4(b) hereof.

                  (j) To vote or give assent, or exercise any rights of
         ownership with respect to stock or other securities or property; and
         to execute and deliver powers of attorney to such person or persons as
         the Trustees shall deem proper, granting to such person or persons
         such power and discretion with relation to securities or property as
         the Trustees shall deem proper.

                  (k) To exercise powers and rights of subscription or
         otherwise which in any manner arise out of ownership of securities.

                  (l) To hold any security or property in a form not indicating
         any trust, whether in bearer, unregistered or other negotiable form;
         or in its own name or in the name of a Custodian or a nominee or
         nominees, subject in whichever case to proper safeguards according to
         the usual practice of Massachusetts trust companies or investment
         companies.

                  (m) To consent to or participate in any plan for the
         reorganization, consolidation or merger of any corporation or concern,
         any security of which is held in the Trust; to consent to any
         contract, lease, mortgage, purchase, or sale of property by such
         corporation or concern; and to pay calls 



                                     - 9 -
<PAGE>   13

         or subscriptions with respect to any security held in the Trust.

                  (n) To compromise, arbitrate, or otherwise adjust claims in
         favor of or against the Trust or any matter in controversy including,
         but not limited to, claims for taxes.

                  (o) To make distributions of income and of capital gains to
         Shareholders in the manner hereinafter provided.

                  (p) To borrow money from a bank for temporary or emergency
         purposes and not for investment purposes. The Trustees shall not
         pledge, mortgage or hypothecate the assets of the Trust except that,
         to secure borrowings, the Trustees may pledge securities.

                  (q) To establish, from time to time, a minimum total
         investment for Shareholders, and to require redemption of the Shares
         of any Shareholders whose investment is less than such minimum upon
         giving notice to such Shareholder. No one dealing with the Trustees
         shall be under any obligation to make any inquiry concerning the
         authority of the Trustees, or to see to the application of any
         payments made or property transferred to the Trustees or upon their
         order.

                  (r) To retain an administrator, manager, investment advisers
         and/or investment subadvisers.

                  (s) To establish separate and distinct series of shares with
         separately defined investment objectives, policies and purposes, and
         to allocate assets, liabilities and expenses of the Trust to a
         particular series of Shares or to apportion the same among two or more
         series, provided that any liability or expense incurred by a
         particular series of Shares shall be payable solely out of the assets
         of that series.

                  (t) To establish separate and distinct classes of Shares for
         one or more series, with each class having such rights and differences
         as determined by the Trustees.

                  (u) To purchase and pay for entirely out of Trust property
         such insurance as they may deem necessary or appropriate for the
         conduct of the business, including, without limitation, insurance
         policies insuring the assets of the trust and payment of distributions
         and principal on its portfolio investments, and insurance policies
         insuring the Shareholders, Trustees, officers, employees, agents,
         investment advisers or managers, principal underwriters, or
         independent contractors of the Trust individually against all claims
         and liabilities of every nature arising by reason of 



                                    - 10 -
<PAGE>   14

         holding, being or having held any such office or position, or by
         reason of any action alleged to have been taken or omitted by any such
         person as Shareholder, Trustee, officer, employee, agent, investment
         adviser or manager, principal underwriter, or independent contractor,
         including any action taken or omitted that may be determined to
         constitute negligence, whether or not the Trust would have the power
         to indemnify such person against such liability.

TRUSTEES AND OFFICERS AS SHAREHOLDERS

         SECTION 2. Subject only to the general limitations herein contained as
to the sale and purchase of Trust Shares and any restrictions that may be
contained in the Bylaws:

                  (a) Any Trustee, officer or other agent of the Trust may
         acquire, own and dispose of Shares to the same extent as if he were
         not a Trustee, officer or agent;

                  (b) The Trustees may issue and sell or cause to be issued and
         sold Shares to (and buy such Shares from) any such person or firm or
         company in which such person is interested.

ACTION BY THE TRUSTEES

         SECTION 3. The Trustees shall act by majority vote at a meeting duly
called or by unanimous written consent without a meeting or by telephone
consent provided a quorum of Trustees participate in any such telephonic
meeting, unless the 1940 Act requires that a particular action be taken only at
a meeting of the Trustees. At any meeting of the Trustees, a majority of the
Trustees shall constitute a quorum. Meetings of the Trustees may be called
orally or in writing by the Chairman of the Trustees or by any two other
Trustees. Notice of the time, date and place of all meetings of the Trustees
shall be given to each Trustee as provided in the Bylaws.

         Notice need not be given to any Trustee who attends the meeting
without objecting to the lack of notice or who executes a written waiver of
notice with respect to the meeting. Subject to the requirements of the 1940
Act, the Trustees by majority vote may delegate to any one of their number the
authority to approve particular matters or take particular actions on behalf of
the Trust.

CHAIRMAN OF THE TRUSTEES

         SECTION 4. The Trustees may appoint one of their number to be Chairman
of the Board of Trustees and to perform such duties as the Trustees may
designate.



                                    - 11 -
<PAGE>   15
                                   ARTICLE VI
                             EXPENSES OF THE TRUST

         Subject to the provisions of Article III, Section 4, the Trustees are
authorized to have paid from the Trust estate or the assets belonging to the
Trust, as they deem fair and appropriate, expenses and disbursements of the
Trust, including, without limitation, fees and expenses of Trustees who are not
Interested Persons of the Trust, interest expenses, taxes, fees and commissions
of every kind, expenses of pricing Trust portfolio securities, expenses of
issue, repurchase and redemption of Shares including expenses attributable to a
program of periodic repurchases or redemptions, expenses of registering and
qualifying the Trust and its Shares under federal and state laws and
regulations, charges of Custodians, transfer agents, and registrars, expenses
of preparing and setting up in type Prospectuses and Statements of Additional
Information, expenses of printing and distributing prospectuses sent to
existing Shareholders, auditing and legal expenses, reports to Shareholders,
expenses of meetings of Shareholders and proxy solicitations therefor,
insurance expenses, association membership dues and for such non-recurring
items as may arise, including litigation to which the Trust is a party, and for
all losses and liabilities by them incurred in administering the Trust, and for
the payment of such expenses, disbursements, losses and liabilities the
Trustees shall have a lien on the assets belonging to the Trust prior to any
rights or interests of the Shareholders thereto. This section shall not
preclude the Trust from directly paying any of the aforementioned fees and
expenses.



                                    - 12 -
<PAGE>   16

                                  ARTICLE VII
          INVESTMENT ADVISER, PRINCIPAL UNDERWRITER AND TRANSFER AGENT

INVESTMENT ADVISER

         SECTION 1. Subject to a Majority Shareholder Vote when required by the
1940 Act, the Trustees may in their discretion from time to time enter into an
investment advisory or similar agreement(s) with respect to the Trust whereby
the other party(ies) to such agreement(s) shall undertake to furnish the
Trustees such investment advisory, statistical and research facilities and
services and such other facilities and services, if any, and all upon such
terms and conditions as the Trustees may in their discretion determine.
Notwithstanding any provisions of this Declaration of Trust, the Trustees may
authorize the investment adviser(s) (subject to such general or specific
instructions as the Trustees may from time to time adopt) to effect purchases,
sales or exchanges of portfolio securities and other investment instruments of
the Trust on behalf of the Trustees or may authorize any officer, agent, or
Trustee to effect such purchases, sales or exchanges pursuant to
recommendations of the investment adviser (and all without further action by
the Trustees). Any such purchases, sales and exchanges shall be deemed to have
been authorized by all of the Trustees.

         The Trustees may, subject to applicable requirements of the 1940 Act,
including those relating to Shareholder approval, authorize the investment
adviser to employ one or more subadvisers from time to time to perform such of
the acts and services of the investment adviser, and upon such terms and
conditions, as may be agreed upon between the investment adviser and
subadviser.

         Notwithstanding any contrary provisions herein, the Trustees can enter
into investment advisory or investment subadvisory agreements without
Shareholder approval to the extent permitted by an exemptive order of the U.S.
Securities and Exchange Commission ("SEC") or similar relief granted by the SEC
or its staff, including a staff no-action position.

PRINCIPAL UNDERWRITER

         SECTION 2. The Trustees may in their discretion from time to time
enter into an agreement(s) providing for the sale of the Shares, whereby the
Trust may either agree to sell the Shares to the other party to the agreement
or appoint such other party its sales agent for such Shares. In either case,
the agreement shall be on such terms and conditions as may be prescribed in the
Bylaws, if any, and such further terms and conditions as the Trustees may in
their discretion determine to be not inconsistent 



                                    - 13 -
<PAGE>   17

with the provisions of this Article VII, or of the Bylaws, if any; and such
agreement may also provide for the repurchase or sale of Shares by such other
party as principal or as agent of the Trust. Alternatively, or in addition
thereto, the Trust can directly distribute its Shares and, if necessary in
connection with such distribution, register as a broker-dealer in appropriate
jurisdictions.

TRANSFER AGENT

         SECTION 3. The Trustees may in their discretion from time to time
enter into a transfer agency and Shareholder service agreement whereby the
other party shall undertake to furnish the Trust with transfer agency and
Shareholder services. The agreement shall be on such terms and conditions as
the Trustees may in their discretion determine are not inconsistent with the
provisions of this Declaration of Trust or of the Bylaws, if any Such services
may be provided by one or more entities including one or more agents of such
parties.

PARTIES TO CONTRACT

         SECTION 4. Any agreement of the character described in Sections 1, 2
and 3 of this Article VII or in Article IX hereof may be entered into with any
corporation, firm, partnership, trust or association, although one or more of
the Trustees or officers of the Trust may be an officer, director, trustee,
shareholder, or member of such other party to the agreement, and no such
agreement shall be invalidated or rendered voidable by reason of the existence
of any relationship, nor shall any person holding such relationship be liable
merely by reason of such relationship for any loss or expense to the Trust
under or by reason of said agreement or accountable for any profit realized
directly or indirectly therefrom, provided that the agreement when entered into
was reasonable and fair and not inconsistent with the provisions of this
Article VII or the Bylaws, if any. The same person (including a firm,
corporation, partnership, trust, or association) may be the other party to
agreements entered into pursuant to Sections 1, 2 and 3 above or Article IX,
and any individual may be financially interested or otherwise affiliated with
persons who are parties to any or all of the agreements mentioned in this
Section 4.

PROVISIONS AND AMENDMENTS

         SECTION 5. To the extent that Section 15 of the 1940 Act is
applicable, any contract entered into pursuant to Sections 1 and 2 of this
Article VII shall be consistent with and subject to the requirements of Section
15 of the 1940 Act with respect to its continuance in effect, its termination,
and the method of 



                                    - 14 -
<PAGE>   18

authorization and approval of such agreement or renewal or amendment thereof,
subject to any exemptive or similar relief granted by the SEC or its Staff,
including a staff no-action position.


                                  ARTICLE VIII
                    SHAREHOLDERS' VOTING POWERS AND MEETINGS

VOTING POWERS

         SECTION 1. The Shareholders shall have power to vote: (i) for the
election of Trustees as provided in Article IV, Section 2, (ii) for the removal
of Trustees as provided in Article IV, Section 3(c), (iii) with respect to any
investment advisory contract as provided in Article VII, Section 1, (iv) with
respect to the amendment of this Declaration of Trust as provided in Article
XII, Section 7, (v) to the same extent as the shareholders of a Massachusetts
business corporation, as to whether or not a court action, proceeding or claim
should be brought or maintained derivatively or as a class action on behalf of
the Trust or the Shareholders, provided, however, that a Shareholder of a
particular series or class shall not be entitled to bring any derivative or
class action on behalf of any other series or class of the Trust, and (vi) with
respect to such additional matters relating to the Trust as may be required or
authorized by law, by this Declaration of Trust, or the Bylaws of the Trust, if
any, or any registration of the Trust with the Commission or any state, as the
Trustees may consider desirable. On any matter submitted to a vote of the
Shareholders, all Shares shall be voted in the aggregate and not by individual
series or class; except that, (i) when required by the 1940 Act or (ii) when
the Trustees have determined that the matter affects only the interests of one
or more series or classes, then only the Shareholders of such series or classes
shall be entitled to vote thereon. Each whole Share shall be entitled to one
vote as to any matter on which it is entitled to vote, and each fractional
Share shall be entitled to a proportionate fractional vote. There shall be no
cumulative voting in the election of Trustees. Shares may be voted in person or
by proxy. Until Shares are issued, the Trustees may exercise all rights of
Shareholders and may take any action required or permitted by law, this
Declaration of Trust or any Bylaws of the Trust to be taken by Shareholders.

MEETINGS

         SECTION 2. Special meetings of the Shareholders may be called by the
Trustees and may be held at the principal office of the Trust or such other
place as the Trustees may designate. Special meetings also shall be called by
the Trustees for the 



                                    - 15 -
<PAGE>   19

purpose of removing one or more Trustees upon the written request for such a
meeting by Shareholders owning at least 10 percent of the outstanding Shares
entitled to vote. Whenever ten or more Shareholders meeting the qualifications
set forth in Section 16(c) of the 1940 Act, as the same may be amended from
time to time, seek the opportunity of furnishing materials to the other
Shareholders with a view to obtaining signatures on such a request for a
meeting, the Trustees shall comply with the provisions of said Section 16(c)
with respect to providing such Shareholders access to the list of the
Shareholders of record of the Trust or the mailing of such materials to such
Shareholders of record. Shareholders shall be entitled to at least 15 days'
notice of any meeting.

QUORUM AND REQUIRED VOTE

         SECTION 3. A majority of Shares entitled to vote in person or by proxy
shall be a quorum for the transaction of business at a Shareholders' meeting,
except that where any provision of law or of this Declaration of Trust permits
or requires that holders of any series or class shall vote, as a series or
class, then a majority of the aggregate number of Shares of that series or
class entitled to vote shall be necessary to constitute a quorum for the
transaction of business by that series or class. Any lesser number shall be
sufficient for adjournments. Any adjourned session or sessions may be held,
within a reasonable time after the date set for the original meeting, without
the necessity of further notice. Except when a larger vote is required by any
provision of this Declaration of Trust, the Bylaws or law, a majority of the
Shares voted in person or by proxy shall decide any questions and a plurality
shall elect a Trustee, provided that where any provision of law or of this
Declaration of Trust permits or requires that the holders of any series or
class shall vote as a series or class, then a majority of the Shares of that
series or class voted on the matter shall decide that matter insofar as that
series or class is concerned.


                                   ARTICLE IX
                                   CUSTODIAN

APPOINTMENT AND DUTIES

         SECTION 1. The Trustees shall at all times employ a bank or trust
company having capital, surplus and undivided profits of at least two million
dollars ($2,000,000) as Custodian on such basis of compensation as may be
agreed upon between the Trustees and the Custodian. The Custodian shall have
authority as agent for the Trust, but subject to such restrictions, limitations
and other 



                                    - 16 -
<PAGE>   20

requirements, if any, as may be contained in the Bylaws of the Trust:

                  (a) to hold the securities owned by the Trust and deliver the
         same upon written order;

                  (b) to receive and receipt for any moneys due to the Trust
         and deposit the same in its own banking department or elsewhere as the
         Trustees may direct;

                  (c) to disburse such funds upon orders or vouchers;

                  (d) to keep the books and accounts of the Trust and furnish
         clerical and accounting services; and

                  (e) to compute, if authorized to do so by the Trustees, the
         Trust's Net Asset Value in accordance with the provisions hereof.

         If so directed by a Majority Shareholder Vote, the Custodian shall
deliver and pay over all property of the Trust held by it as specified in such
vote.

EMPLOYMENT OF SUB-CUSTODIANS

         SECTION 2. The Trustees may also authorize the Custodian to employ one
or more sub-Custodians from time to time to perform such of the acts and
services of the Custodian, and upon such terms and conditions, as may be agreed
upon between the Custodian and such sub-Custodian and approved by the Trustees,
provided that in every case such sub-Custodian shall be (a) a bank or trust
company organized under the laws of the United States or one of the states
thereof and having capital, surplus and undivided profits of at least two
million dollars ($2,000,000) or such other person as may be permitted by the
Commission, or otherwise in accordance with the 1940 Act as from time to time
amended, or (b) an eligible foreign custodian in accordance with Rule 17f-5
under the 1940 Act or any such applicable successor regulation.

CENTRAL CERTIFICATE SYSTEM

         SECTION 3. Subject to such rules, regulations and orders as the
Commission may adopt, the Trustees may direct the Custodian to deposit all or
any part of the securities owned by the Trust in a system for the central
handling of securities established by a national securities exchange or a
national securities association registered with the Commission under the
Securities Exchange Act of 1934, as amended, or such other person as may be
permitted by the Commission, or otherwise in accordance with the 1940 Act as
from time to time amended, pursuant to which system all securities 



                                    - 17 -
<PAGE>   21

of any particular class of any issuer deposited within the system are treated
as fungible and may be transferred or pledged by bookkeeping entry without
physical delivery of such securities, provided that all such deposits shall be
subject to withdrawal only upon the order of the Trust.


                                   ARTICLE X
                         DISTRIBUTIONS AND REDEMPTIONS

DISTRIBUTIONS

         SECTION 1.

                  (a) The Trustees may from time to time declare and pay
         dividends. The amount of such dividends and the payment of them shall
         be wholly in the discretion of the Trustees.

                  (b) The Trustees shall have power, to the fullest extent
         permitted by the laws of Massachusetts, at any time to declare and
         cause to be paid dividends on Shares from Trust assets, which
         dividends, at the election of the Trustees, may be paid daily or
         otherwise pursuant to a standing resolution or resolutions adopted
         only once or with such frequency as the Trustees may determine, and
         may be payable in Shares at the election of each Shareholder.

                  (c) Anything in this Declaration of Trust to the contrary
         notwithstanding, the Trustees may at any time declare and distribute
         pro rata among the Shareholders a "stock dividend."

REDEMPTIONS

         SECTION 2. In case any Shareholder of record desires to dispose of his
Shares, he may deposit at the office of the transfer agent or other authorized
agent of the Trust a written request or such other form of request as the
Trustees may from time to time authorize, requesting that the Trust purchase
the Shares in accordance with this Section 2; and the Shareholder so requesting
shall be entitled to require the Trust to purchase, and the Trust or the
principal underwriter of the Trust shall purchase, said Shares, but only at the
Net Asset Value thereof (as described in Section 3 hereof). The Trust shall
make payment for any such Shares to be redeemed, as aforesaid, in cash to the
extent required by federal law, and securities from Trust assets, and payment
for such Shares shall be made by the Trust or the principal underwriter to the
Shareholder of record within seven (7) days after the date upon which the
request is effective. Provided, however, that if Shares being redeemed have
been 



                                    - 18 -
<PAGE>   22

purchased by check, the series may postpone payment until the Trust has
assurance that good payment has been collected for the purchase of the Shares.
The Trust may require Shareholders to pay a sales charge to the Trust, the
underwriter or any other person designated by the Trustees upon redemption or
repurchase of Shares of any series or class in such amount as shall be
determined from time to time by the Trustees. The amount of such sales charge
may, but need not, vary depending on various factors, including without
limitation the holding period of the redeemed or repurchase Shares. The
Trustees also may charge a redemption or repurchase fee in such amount as may
be determined from time to time by the Trustees.

DETERMINATION OF NET ASSET VALUE AND VALUATION OF PORTFOLIO  ASSETS 

         SECTION 3. The term "Net Asset Value" shall mean that amount by which
the assets of the Trust or any series thereof exceed its liabilities, all as
determined by or under the direction of the Trustees. Such value shall be
determined on such days and at such times as the Trustees may determine. Such
determination shall be made with respect to securities for which market
quotations are readily available, at the market value of such securities; and
with respect to other securities and assets, at the fair value as determined in
good faith by the Trustees, provided, however, that the Trustees, without
Shareholder approval, may alter the method of appraising portfolio securities
insofar as permitted under the 1940 Act and the rules, regulations and
interpretations thereof promulgated or issued by the Commission or insofar as
permitted by any Order of the Commission. The Trustees may delegate any powers
and duties under this Section 3 with respect to appraisal of assets and
liabilities. At any time the Trustees may cause the value per Share last
determined to be determined again in similar manner and may fix the time when
such redetermined value shall become effective.

SUSPENSION OF THE RIGHT OF REDEMPTION

         SECTION 4. The Trustees may declare a suspension of the right of
redemption or postpone the date of payment to the extent as permitted under the
1940 Act. Such suspension shall take effect at such time as the Trustees shall
specify but not later than the close of business on the business day next
following the declaration of suspension, and thereafter there shall be no right
of redemption or payment until the Trustees shall declare the suspension at an
end. In the case of a suspension of the right of redemption, a Shareholder may
either withdraw his request for redemption or receive payment based on the Net
Asset Value per Share existing after the termination of the suspension.



                                    - 19 -
<PAGE>   23

                                   ARTICLE XI
                  LIMITATION OF LIABILITY AND INDEMNIFICATION

LIMITATION OF LIABILITY

         SECTION 1. Provided they have exercised reasonable care and have acted
under the reasonable belief that their actions are in the best interest of the
Trust, the Trustees shall not be responsible for or liable in any event for
neglect or wrongdoing of them or any officer, agent, employee or investment
adviser of the Trust, but nothing contained herein shall protect any Trustee
against any liability to which he would otherwise be subject by reason of
willful misfeasance, bad faith, gross negligence or reckless disregard of the
duties involved in the conduct of his office.

INDEMNIFICATION

         SECTION 2.

                   (a) Subject to the exceptions and limitations contained in
         paragraph (b) below:

                           (i) every person who is, or has been, a Trustee or
                  officer of the Trust (hereinafter referred to as "Covered
                  Person") shall be indemnified by the Trust to the fullest
                  extent permitted by law against liability and against all
                  expenses reasonably incurred or paid by him in connection
                  with any claim, action, suit or proceeding in which he
                  becomes involved as a party or otherwise by virtue of his
                  being or having been a Trustee or officer and against amounts
                  paid or incurred by him in the settlement thereof;

                           (ii) the words "claim," "action," "suit," or
                  "proceeding" shall apply to all claims, actions, suits or
                  proceedings (civil, criminal or other, including appeals),
                  actual or threatened while in office or thereafter, and the
                  words "liability" and "expenses" shall include, without
                  limitation, attorneys' fees, costs, judgments, amounts paid
                  in settlement, fines, penalties and other liabilities.

                   (b) No indemnification shall be provided hereunder to a
         Covered Person:

                           (i) who shall have been adjudicated by a court or
                  body before which the proceeding was brought (A) to be liable
                  to the Trust or its Shareholders by reason of 



                                    - 20 -
<PAGE>   24

                  willful misfeasance, bad faith, gross negligence or reckless
                  disregard of the duties involved in the conduct of his office
                  or (B) not to have acted in good faith in the reasonable
                  belief that his action was in the best interest of the Trust;
                  or

                           (ii) in the event of a settlement, unless there has
                  been a determination that such Trustee or officer did not
                  engage in willful misfeasance, bad faith, gross negligence or
                  reckless disregard of the duties involved in the conduct of
                  his office, (A) by the court or other body approving the
                  settlement; (B) by at least a majority of those Trustees who
                  are neither interested persons of the Trust nor are parties
                  to the matter based upon a review of readily available facts
                  (as opposed to a full trial-type inquiry); or (C) by written
                  opinion of independent legal counsel based upon a review of
                  readily available facts (as opposed to a full trial-type
                  inquiry); provided, however, that any Shareholder may, by
                  appropriate legal proceedings, challenge any such
                  determination by the Trustees, or by independent counsel.

                  (c) The rights of indemnification herein provided may be
         insured against by policies maintained by the Trust, shall be
         severable, shall not be exclusive of or affect any other rights to
         which any Covered Person may now or hereafter be entitled, shall
         continue as to a person who has ceased to be such Trustee or officer
         and shall inure to the benefit of the heirs, executors and
         administrators of such a person. Nothing contained herein shall affect
         any rights to indemnification to which Trust personnel, other than
         Trustees and officers, and other persons may be entitled by contract
         or otherwise under law.

                  (d) Expenses in connection with the preparation and
         presentation of a defense to any claim, action, suit or proceeding of
         the character described in paragraph (a) of this Section 2 may be paid
         by the Trust from time to time prior to final disposition thereof upon
         receipt of an undertaking by or on behalf of such Covered Person that
         such amount will be paid over by him to the Trust if it is ultimately
         determined that he is not entitled to indemnification under this
         Section 2; provided, however, that:

                           (i) such Covered Person shall have provided
                  appropriate security for such undertaking,

                           (ii) the Trust is insured against losses arising out
                  of any such advance payments or


                                    - 21 -
<PAGE>   25

                           (iii) either a majority of the Trustees who are
                  neither interested persons of the Trust nor parties to the
                  matter, or independent legal counsel in a written opinion,
                  shall have determined, based upon a review of readily
                  available facts (as opposed to a trial-type inquiry or full
                  investigation), that there is reason to believe that such
                  Covered Person will be found entitled to indemnification
                  under this Section 2.

SHAREHOLDERS

         SECTION 3. In case any Shareholder or former Shareholder of the Trust
shall be held to be personally liable solely by reason of his being or having
been a Shareholder and not because of his acts or omissions or for some other
reason, the Shareholder or former Shareholder (or his heirs, executors,
administrators or other legal representatives or in the case of a corporation
or other entity, its corporate or other general successor) shall be entitled
out of the Trust assets to be held harmless from and indemnified against all
loss and expense arising from such liability. The Trust shall, upon request by
the Shareholder, assume the defense of any claim made against the Shareholder
for any act or obligation of the Trust and satisfy any judgment thereon.


                                  ARTICLE XII
                                 MISCELLANEOUS

TRUST NOT A PARTNERSHIP

         SECTION 1. It is hereby expressly declared that a trust and not a
partnership is created hereby. No Trustee hereunder shall have any power to
bind personally either the Trust's officers or any Shareholder. All persons
extending credit to, contracting with or having any claim against the Trust or
the Trustees shall look only to the assets of the Trust for payment under such
credit, contract or claim; and neither the Shareholders nor the Trustees, nor
any of their agents, whether past, present or future, shall be personally
liable therefor. Nothing in this Declaration of Trust shall protect a Trustee
against any liability to which the Trustee would otherwise be subject by reason
of willful misfeasance, bad faith, gross negligence or reckless disregard of
the duties involved in the conduct of the office of Trustee hereunder.




                                    - 22 -

<PAGE>   26
TRUSTEE'S GOOD FAITH ACTION, EXPERT ADVICE, NO BOND OR SURETY'S

         SECTION 2. The exercise by the Trustees of their powers and discretion
hereunder in good faith and with reasonable care under the circumstances then
prevailing, shall be binding upon everyone interested. Subject to the
provisions of Section 1 of this Article XII and to Article XI, the Trustees
shall not be liable for errors of judgment or mistakes of fact or law. The
Trustees may take advice of counsel or other experts with respect to the
meaning and operation of this Declaration of Trust, and subject to the
provisions of Section 1 of this Article XII and to Article XI, shall be under
no liability for any act or omission in accordance with such advice or for
failing to follow such advice. The Trustees shall not be required to give any
bond as such, nor any surety if a bond is obtained.

ESTABLISHMENT OF RECORD DATES

         SECTION 3. The Trustees may close the stock transfer books of the
Trust for a period not exceeding 60 days preceding the date of any meeting of
Shareholders, or the date for the payment of any dividends, or the date for the
allotment of rights, or the date when any change or conversion or exchange of
Shares shall go into effect; or in lieu of closing the stock transfer books as
aforesaid, the Trustees may fix in advance a date, not exceeding 60 days
preceding the date of any meeting of Shareholders, or the date for payment of
any dividend, or the date for the allotment of rights, or the date when any
change or conversion or exchange of Shares shall go into effect, as a record
date for the determination of the Shareholders entitled to notice of, and to
vote at, any such meeting, or entitled to receive payment of any such dividend,
or to any such allotment of rights, or to exercise the rights in respect of any
such change, conversion or exchange of Shares, and in such case such
Shareholders and only such Shareholders as shall be Shareholders of record on
the date so fixed shall be entitled to such notice of, and to vote at, such
meeting, or to receive payment of such dividend, or to receive such allotment
or rights, or to exercise such rights, as the case may be, notwithstanding any
transfer of any Shares on the books of the Trust after any such record date
fixed as aforesaid.

TERMINATION OF TRUST

         SECTION 4.

                  (a) This Trust shall continue without limitation of time but
         subject to the provisions of paragraph (b) of this Section 4.

                  (b) Subject to a Majority Shareholder Vote, the Trustees may:



                                    - 23 -
<PAGE>   27

                           (i) sell and convey the assets of the Trust to
                  another trust, partnership, association or corporation
                  organized under the laws of any state which is a diversified
                  open-end management investment company as defined in the 1940
                  Act, for adequate consideration which may include the
                  assumption of all outstanding obligations, taxes and other
                  liabilities; accrued or contingent, of the Trust and which
                  may include shares of beneficial interest or stock of such
                  trust, partnership, association or corporation; or

                           (ii) at any time sell and convert into money all of
                  the assets of the Trust.

                  Upon making provision for the payment of all such liabilities
         in either (i) or (ii), by such assumption or otherwise, the Trustees
         shall distribute the remaining proceeds or assets (as the case may be)
         ratably among the Shareholders.

                  The Trustees may take any of the actions specified in clauses
         (i) and (ii) above without obtaining a Majority Shareholder Vote of
         any series or class or of the Trust if a majority of the Trustees
         makes a determination that the continuation of a series or class or
         the Trust is not in the best interests of such series or class, or the
         Trust or their respective Shareholders as a result of factors or
         events adversely affecting the ability of such series or class or the
         Trust to conduct its business and operations in an economically viable
         manner. Such factors and events may include the inability of a series
         or class, or the Trust to maintain its assets at an appropriate size,
         changes in laws or regulations governing the series or class, or the
         Trust or affecting assets of the type in which such series or class,
         or the Trust invests or economic developments or trends having a
         significant adverse impact on the business or operations of such
         series or class, or the Trust.

                  (c) Upon completion of the distribution of the remaining
         assets as provided in paragraph (b), the Trust shall terminate and the
         Trustees shall be discharged of any and all further liabilities and
         duties hereunder and the right, title and interest of all parties
         shall be canceled and discharged.
   

FILING OF COPIES, REFERENCES, HEADING
    

         SECTION 5. The original or a copy of this instrument and of each
declaration of trust supplemental hereto shall be kept at the office of the
Trust where it may be inspected by any Shareholder. 



                                    - 24 -
<PAGE>   28

A copy of this instrument and of each supplemental declaration of trust shall
be filed by the Trustees with the Secretary of the Commonwealth of
Massachusetts and any other governmental office where such filing may from time
to time be required. Anyone dealing with the Trust may rely on a certificate by
an officer or Trustee of the Trust as to whether or not any such supplemental
declarations of trust have been made and as to any matters in connection with
the Trust hereunder, and with the same effect as if it were the original, may
rely on a copy certified by an officer or Trustee of the Trust to be a copy of
this instrument or of any such supplemental declaration of trust. In this
instrument or in any such supplemental declaration of trust, references to this
instrument, and the expressions "herein," "hereof" and "hereunder," shall be
deemed to refer to this instrument as amended or affected by any such
supplemental declaration of trust. Headings are placed herein for convenience
of reference only and in case of any conflict, the text of this instrument,
rather than the headings, shall control. This instrument may be executed in any
number of counterparts each of which shall be deemed an original.

APPLICABLE LAW

         SECTION 6. The trust set forth in this instrument is made in the
Commonwealth of Massachusetts, and it is created under and is to be governed by
and construed and administered according to the laws of said Commonwealth. The
Trust shall be of the type commonly called a Massachusetts business trust, and
without limiting the provisions hereof, the Trust may exercise all powers which
are ordinarily exercised by such a Trust.

AMENDMENTS

         SECTION 7. This instrument can be amended, supplemented or restated by
a majority vote of the Trustees. Amendments, supplements or restatements having
the purpose of materially decreasing the rights of shareholders in regard to
liability and indemnification, as set forth in Article III Section 6 and
Article XI Section 3, respectively, shall require a Majority Shareholder Vote.
Copies of the amended, supplemented or restated Declaration of Trust shall be
filed as specified in Section 5 of this Article XII.

FISCAL YEAR

         SECTION 8. The fiscal year of the Trust shall end on a specified date
as determined by the Trustees; provided, however, that the Trustees may,
without Shareholder approval, change the fiscal year of the Trust.


                                    - 25 -

<PAGE>   29

USE OF THE WORDS "AMERICAN AADVANTAGE" AND "AMERICAN AIRLINES"

         SECTION 9. AMR Corporation has consented to the use by the Trust of
the identifying words "American AAdvantage Mileage Funds." Such consent is
conditioned upon the employment of AMR Investment Services, Inc., its
successors or its affiliated companies as investment adviser or manager of the
Trust. As between the Trust and itself, AMR Corporation controls the use of the
name of the Trust insofar as such name contains the identifying words "American
AAdvantage Mileage Funds." AMR Corporation may from time to time use the
identifying words "American AAdvantage" in other connections and for other
purposes, including, without limitation, in the names of other corporations or
businesses which it may manage, advise, sponsor or own, or in which it may have
a financial interest. AMR Corporation may require the Trust to cease using the
identifying words "American AAdvantage Mileage Funds" in the name of the Trust
if the Trust ceases to employ AMR Investment Services, Inc. or another
subsidiary or affiliate of AMR Corporation as investment adviser or manager.

NOTICE TO OTHER PARTIES

         SECTION 10. Every note, bond, contract, instrument, certificate or
undertaking made or issued by the Trustees or by any officers or officer shall
give notice that this Declaration of Trust is on file with the Secretary of the
Commonwealth of Massachusetts and shall recite that the same was executed or
made by or on behalf of the Trust or by them as Trustees or Trustee or as
officers or officer and not individually and that the obligations of such
instrument are not binding upon any of them or the Shareholders individually
but are binding only upon the assets and property of the Trust, and may contain
such further recital as he and she or they may deem appropriate, but the
omission thereof shall not operate to bind any Trustees or Trustee or officers
or officer or Shareholders or Shareholder individually.



                                    - 26 -
<PAGE>   30
         IN WITNESS WHEREOF, the undersigned, being a majority of the Trustees
of American AAdvantage Mileage Funds, have executed this instrument.

   

    7/19/95                         /s/ WILLIAM F. QUINN
- - -----------------                   ----------------------------------
Date                                William F. Quinn
                                    Trustee


    7/19/95                         /s/ DAVID G. FOX
- - -----------------                   ----------------------------------
Date                                David G. Fox
                                    Trustee


    7/19/95                         /s/ JOHN S. JUSTIN
- - -----------------                   ----------------------------------
Date                                John S. Justin
                                    Trustee


    7/19/95                         /s/ STEPHEN D. O'SULLIVAN
- - -----------------                   ----------------------------------
Date                                Stephen D. O'Sullivan
                                    Trustee


    7/19/95                         /s/ ROGER T. STAUBACH
- - -----------------                   ----------------------------------
Date                                Roger T. Staubach
                                    Trustee
    



                                    - 27 -

<PAGE>   1
                                                                  EXHIBIT 99.b.2

                       AMERICAN AADVANTAGE MILEAGE FUNDS

                                 AMENDED BYLAWS

         These Amended Bylaws of the American AAdvantage Mileage Funds
(formerly, the "American AAdvantage Funds II") (the "Trust"), a Massachusetts
business trust, are subject to the Trust's Declaration of Trust as from time to
time amended.

                                   ARTICLE I
                          OFFICERS AND THEIR ELECTION

OFFICERS

         SECTION 1.  The officers of the Trust shall be a President, a
Treasurer, a Secretary, and such other officers as the Trustees may from time
to time elect.  It shall not be necessary for any Trustee or other officer to
be a holder of shares in the Trust.

ELECTION OF OFFICERS

         SECTION 2.  The President, Treasurer and Secretary shall be chosen
annually by the Trustees.  Two or more offices may be held by a single person
except the offices of President and Secretary. The officers shall hold office
until their successors are chosen and qualified.

RESIGNATIONS AND REMOVALS

         SECTION 3.  Any officer of the Trust may resign by filing a written
resignation with the President, the Trustees or the Secretary, which
resignation shall take effect on being so filed or at such time as may be
therein specified.  The Trustees may at any meeting remove any officer by a
majority vote of the voting Trustees.


                                   ARTICLE II
                   POWERS AND DUTIES OF OFFICERS AND TRUSTEES

MANAGEMENT OF THE TRUST - GENERAL

         SECTION 1.  The business and affairs of the Trust shall be managed by
the Trustees, and they shall have all powers necessary and desirable to carry
out their responsibilities, so far as such powers are not inconsistent with the
laws of the Commonwealth of Massachusetts, the Declaration of Trust, or with
these Bylaws.
<PAGE>   2
RIGHT TO ENGAGE IN BUSINESS

         SECTION 2.  Any officer or Trustee of the Trust, the investment
adviser, the manager, and any officers or directors of the investment adviser
or manager may have personal business interests and may engage in personal
business activities.

EXECUTIVE AND OTHER COMMITTEES

         SECTION 3.  The Trustees may elect from their own number an executive
committee to consist of not less than three nor more than five members, which
shall have the power and duty to conduct the current and ordinary business of
the Trust, including the purchase and sale of securities, while the Trustees
are not in session, and such other powers and duties as the Trustees may from
time to time delegate to such committee.  The Trustees may also elect from
their own number other committees from time to time.  The number composing such
committees and the powers conferred upon the same are to be determined by vote
of the Trustees.

CHAIRMAN OF THE TRUSTEES

         SECTION 4.  The Trustees may, but need not, appoint from among their
number a Chairman.  He shall perform such duties as the Trustees may from time
to time designate.

PRESIDENT

         SECTION 5.  The President shall be the chief executive officer of the
Trust and, subject to the Trustees, shall have general supervision over the
business and policies of the Trust. When present, he or she shall preside at
all meetings of the Shareholders and the Trustees, and he or she may, subject
to the approval of the Trustees, appoint a Trustee to preside at such meetings
in his absence.  The President shall perform such duties additional to all of
the foregoing as the Trustees may from time to time designate.

TREASURER

         SECTION 6.  The Treasurer shall be the principal financial and
accounting officer of the Trust.  He or she shall deliver all funds and
securities of the Trust which may come into his or her hands to such bank or
trust company as the Trustees shall employ as Custodian in accordance with
Article IX of the Declaration of Trust.  He or she shall have the custody of
the seal of the Trust.  He or she shall make annual reports regarding the
business and condition of the Trust, which reports shall be preserved in Trust
records, and he or she shall furnish such other reports regarding
<PAGE>   3
the business and condition of the Trust as the Trustees may from time to time
require.  The Treasurer shall perform such additional duties as the Trustees
may from time to time designate.



SECRETARY

         SECTION 7.  The Secretary shall record in books kept for the purpose
all votes and proceedings of the Trustees and the Shareholders at their
respective meetings.  The Secretary shall perform such additional duties as the
Trustees may from time to time designate.

VICE PRESIDENT

         SECTION 8.  Any Vice President of the Trust shall perform such duties
as the Trustees may from time to time designate.

ASSISTANT TREASURER

         SECTION 9.  Any Assistant Treasurer of the Trust shall perform such
duties as the Trustees may from time to time designate.

ASSISTANT SECRETARY

         SECTION 10.  Any Assistant Secretary of the Trust shall perform such
duties as the Trustees may from time to time designate.

OTHER OFFICERS

         SECTION 11.  The Trustees from time to time may appoint such other
officers or agents as they may deem advisable, each of whom shall have such
title, hold office for such period, have such authority and perform such duties
as the Trustees may determine.  The Trustees from time to time may delegate to
one or more officers or agents the power to appoint any such subordinate
officers or agents and to prescribe their respective rights, terms of office,
authorities and duties.





                                     - 3 -
<PAGE>   4
                                  ARTICLE III
                             SHAREHOLDERS' MEETINGS

SPECIAL MEETINGS

         SECTION 1.  A special meeting of the Shareholders shall be called by
the Secretary whenever (a) ordered by the Trustees or (b) requested, for the
purpose of removing a Trustee from office, in writing by the holder or holders
of at least 10% of the outstanding Shares entitled to vote.  If the Secretary,
when so ordered or requested, refuses or neglects for more than 30 days to call
such special meeting, the Trustees or the Shareholders so requesting may, in
the name of the Secretary, call the meeting by giving notice thereof in the
manner required when notice is given by the Secretary.  If the meeting is a
meeting of the shareholders of one or more series of shares, but not a meeting
of all shareholders of the Trust, then only the shareholders of such one or
more series shall be entitled to notice of and to vote at such meeting.

NOTICE

         SECTION 2.  Except as above provided, notices of any special meeting
of the Shareholders shall be given by the Secretary by delivering or mailing,
postage prepaid, to each Shareholder entitled to vote at said meeting, a
written or printed notification of such meeting, at least 10 days before the
meeting, to such address as may be registered with the Trust by the
Shareholder.

PLACE OF MEETING

         SECTION 3.  All special meetings of the Shareholders shall be held at
the principal place of business of the Trust or at such other place in the
United States as the Trustees may designate.

BALLOTS

         SECTION 4.  The vote upon any question shall be by ballot whenever
requested by any person entitled to vote, but, unless such a request is made,
voting may be conducted in any way approved by the meeting.

PROXIES

         SECTION 5.  Shareholders entitled to vote may vote either in person or
by proxy, provided that an instrument authorizing such proxy to act is executed
by the Shareholder in writing and dated not more than eleven months before the
meeting, unless the





                                     - 4 -
<PAGE>   5
instrument specifically provides for a longer period.  Proxies shall be
delivered to the Secretary of the Trust or other person responsible for
recording the proceedings before being voted.  A proxy with respect to shares
held in the name of two or more persons shall be valid if executed by one of
them unless at or prior to exercise of such proxy the Trust receives a specific
written notice to the contrary from any one of them.  Unless otherwise
specifically limited by their terms, proxies shall entitle the holder thereof
to vote at any adjournment of a meeting.  A proxy purporting to be exercised by
or on behalf of a Shareholder shall be deemed valid unless challenged at or
prior to its exercise and the burden of providing invalidity shall rest on the
challenger.  At all meetings of the Shareholders, unless the voting is
conducted by inspectors, all questions relating to the qualifications of
voters, the validity of proxies, and the acceptance of rejection of votes shall
be decided by the chairman of the meeting.


                                   ARTICLE IV
                               TRUSTEES' MEETINGS

SPECIAL MEETINGS

         SECTION 1.  Special meetings of the Trustees shall be called by the
Secretary at the written request of the President, the Treasurer, or any two
Trustees, and if the Secretary, when so requested, refuses or fails for more
than 24 hours to call such meeting, the President, the Treasurer, or such two
Trustees may, in the name of the Secretary, call such meeting by giving due
notice in the manner required when notice is to be given by the Secretary.  All
special meetings of the Trustees shall be held at the principal place of
business of the Trust or such other place in the United States as the person or
persons requesting said meeting to be called may designate, but any meeting may
adjourn to any other place.

REGULAR MEETINGS

         SECTION 2.  Regular meetings of the Trustees may be held without call
or notice at such places and at such times as the Trustees may from time to
time determine, provided that any Trustee who is absent when such determination
is made shall be given notice of the determination.

QUORUM

         SECTION 3.  A majority of the Trustees shall constitute a quorum for
the transaction of business.





                                     - 5 -
<PAGE>   6
NOTICE

         SECTION 4.  Except as otherwise provided, notice of any special
meeting of the Trustees shall be given by the Secretary to each Trustee orally
or by mail, hand delivery or telegram.  A notice may be mailed, postage
prepaid, addressed to him or her at his or her address as registered on the
books of the Trust or, if not so registered, at his last known address at least
three days before the meeting or delivered to him at least two days before the
meeting, provided orally by telephone at least 24 hours before the meeting or
sent to him at least 24 hours before the meeting, by prepaid telegram addressed
to him at said registered address, if any, or if he has no such registered
address, at his last known address

SPECIAL ACTION

         SECTION 5.  When all the Trustees shall be present at any meeting,
however called or wherever held, or shall assent to the holding of the meeting
without notice, or after the meeting shall sign a written assent thereto on the
record of such meeting, the acts of such meeting shall be valid as if such
meeting had been regularly held.

ACTION BY CONSENT

         SECTION 6.  Any action by the Trustees may be taken without a meeting
if a written consent thereto is signed by all the Trustees and filed with the
records of the Trustees' meeting, or by telephone consent provided a quorum of
Trustees participate in any such telephone meeting.  Such consent shall be
treated as a vote of the Trustees for all purposes.


                                   ARTICLE V
                         SHARES OF BENEFICIAL INTEREST

BENEFICIAL INTEREST

         SECTION 1.  The beneficial interest in the Trust shall at all times be
divided into an unlimited number of transferable Shares without par value, each
of which shall represent an equal proportionate interest in the class with each
other Share of the class outstanding, none having priority or preference over
another.





                                     - 6 -
<PAGE>   7
TRANSFER OF SHARES

         SECTION 2.  The Shares of the Trust shall be transferable, so as to
affect the rights of the Trust, only by transfer recorded on the books of the
Trust, in person or by attorney.

EQUITABLE INTEREST NOT RECOGNIZED

         SECTION 3.  The Trust shall be entitled to treat the holder of record
of any Share or Shares of stock as the holder in fact thereof, and shall not be
bound to recognize any equitable or other claim or interest in such Share or
Shares on the part of any other person except as may be otherwise expressly
provided by law.


                                   ARTICLE VI
                              INSPECTION OF BOOKS

         The Trustees shall from time to time determine whether and to what
extent, and at what times and places, and under what conditions and regulations
the accounts and books of the Trust or any of them shall be open to the
inspection of the Shareholders; and no Shareholder shall have any right to
inspect any account or book or document of the Trust except as conferred by law
or otherwise by the Trustees or by resolution of the Shareholders.


                                  ARTICLE VII
                                  FISCAL YEAR

         The fiscal year of the Trust shall end on such date as the Trustees
shall from time to time determine.


                                  ARTICLE VIII
                                   AMENDMENTS

         These Bylaws may be amended at any meeting of the Trustees of the
Trust by a majority vote.


                                   ARTICLE IX
                         PRINCIPAL OFFICE OF THE TRUST

         The principal place of business of the Trust shall be located within
or without the Commonwealth of Massachusetts as the Trustees may determine or
as they may authorize.





                                     - 7 -
<PAGE>   8
                       AMERICAN AADVANTAGE MILEAGE FUNDS

                                     BYLAWS

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                     PAGE
                                                                                                                     ----
<S>                                                                                                                     <C>
ARTICLE I - OFFICERS AND THEIR ELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 Section 1:  Officers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 Section 2:  Election of Officers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 Section 3:  Resignations And Removals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1

ARTICLE II - POWERS AND DUTIES OF OFFICERS AND TRUSTEES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 Section  1:  Management Of The Trust - General . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 Section  2:  Right To Engage In Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 Section  2:  Executive And Other Committees  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 Section  3:  Chairman Of The Trustees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 Section  4:  President . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 Section  5:  Treasurer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 Section  6:  Secretary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 Section  7:  Vice President  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 Section  8:  Assistant Treasurer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 Section  9:  Assistant Secretary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 Section 10:  Other Officers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3

ARTICLE III - SHAREHOLDERS' MEETINGS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 Section 1:  Special Meetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 Section 2:  Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
                 Section 3:  Place Of Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
                 Section 4:  Ballots  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
                 Section 5:  Proxies  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4

ARTICLE IV - TRUSTEES' MEETINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 Section 1:  Special Meetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 Section 2:  Regular Meetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 Section 3:  Quorum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 Section 4:  Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 Section 5:  Special Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 Section 6:  Action By Consent  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6

ARTICLE V - SHARES OF BENEFICIAL INTEREST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 Section 1:  Beneficial Interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 Section 2:  Transfer Of Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 Section 3:  Equitable Interest Not Recognized  . . . . . . . . . . . . . . . . . . . . . . . . . . .   6

ARTICLE VI - INSPECTION OF BOOKS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
</TABLE>






                                     -i-
<PAGE>   9
<TABLE>
<S>                                                                                                                     <C>
ARTICLE VII - FISCAL YEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     7

ARTICLE VIII - AMENDMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     7

ARTICLE IX - PRINCIPAL OFFICE OF THE TRUST  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     7
</TABLE>





                                     -ii-

<PAGE>   1





                                                              Exhibit 99.b.5.a.i

                       AMERICAN AADVANTAGE MILEAGE FUNDS

                              MANAGEMENT AGREEMENT


         Agreement made as of this 1st day of October, 1995 between the
American AAdvantage Mileage Funds, a Massachusetts business trust (the "Mileage
Trust"), and AMR Investment Services, Inc. (the "Manager"), a Delaware
corporation.

         WHEREAS, the Mileage Trust is registered under the Investment Company
Act of 1940, as amended (the "1940 Act"), as an open-end management investment
company consisting of one or more series (portfolios) of shares, each having
its own investment policies; and

         WHEREAS, the Manager is an investment adviser under the Investment
Advisers Act of 1940, as amended; and

         WHEREAS, the Mileage Trust desires to retain the Manager as investment
adviser and administrator to furnish administrative, investment advisory and
portfolio management services to the Mileage Trust with respect to such
portfolios as the Mileage Trust and the Manager shall agree upon from time to
time (collectively, the "Portfolios"), and the Manager is willing to furnish
such services;

         NOW, THEREFORE, in consideration of the premises and mutual covenants
herein contained, it is agreed between the parties hereto as follows:

         1.  APPOINTMENT.  The Mileage Trust hereby appoints the Manager as
investment adviser and administrator of the Mileage Trust and each Portfolio
listed on Schedule A of this Agreement (as such schedule may be amended from
time to time) for the period and on the terms set forth in this Agreement.  The
Manager accepts such appointment and agrees to render the services herein set
forth.  In the performance of its duties, the Manager will act in the best
interests of the Mileage Trust and each Portfolio and will comply with (a)
applicable laws and regulations, including, but not limited to, the 1940 Act,
(b) the terms of this Agreement, (c) the Mileage Trust's Declaration of Trust,
By-Laws and currently effective registration statement under the Securities Act
of 1933, as amended, and the 1940 Act, and any amendments thereto, (d) relevant
undertakings to state securities regulators which have been provided to the
Manager, (e) the stated investment objective, policies and restrictions of each
applicable Portfolio, and (f) such other guidelines as the Board




                                       1
<PAGE>   2
of Trustees of the Mileage Trust ("Board of Trustees") reasonably may
establish.

         2.  DUTIES AS INVESTMENT ADVISER.

         (a)     Subject to the supervision of the Board of Trustees, the
Manager will provide a continuous investment program for each Portfolio,
including investment research and management with respect to all securities,
investments and cash equivalents in each Portfolio.  The Manager will determine
from time to time what securities and other investments will be purchased,
retained or sold by each Portfolio.   The Manager will exercise full discretion
and act for each Portfolio in the same manner and with the same force and
effect as such Portfolio itself might or could do with respect to purchases,
sales, or other transactions, as well as with respect to all other things
necessary or incidental to the furtherance or conduct of such purchases, sales
or other transactions.

         (b)     The Manager will place orders pursuant to its investment
determinations for each Portfolio either directly with the issuer or through
other broker-dealers ("brokers").  In the selection of brokers and the
placement of orders for the purchase and sale of portfolio investments for the
Portfolios, the Manager shall use its best efforts to obtain for the Portfolios
the most favorable price and execution available, except to the extent it may
be permitted to pay higher brokerage commissions for brokerage and research
services as described below.  In using its best efforts to obtain the most
favorable price and execution available, the Manager, bearing in mind the
Mileage Trust's best interests at all times, shall consider all factors it
deems relevant, including by way of illustration, price, the size of the
transaction, the nature of the market for the security, the amount of the
commission, the timing of the transaction taking into account market prices and
trends, the reputation, experience and financial stability of the broker
involved and the quality of service rendered by the broker in other
transactions.  Subject to such policies as the Board of Trustees may determine,
the Manager shall not be deemed to have acted unlawfully or to have breached
any duty created by this Agreement or otherwise solely by reason of its having
caused a Portfolio to pay a broker that provides brokerage and research
services to the Manager an amount of commission for effecting a portfolio
investment transaction in excess of the amount of commission another broker
would have charged for effecting that transaction if the Manager determines in
good faith that such amount of commission was reasonable in relation to the
value of the brokerage and research services provided by such broker, viewed in
terms of either that particular transaction or the Manager's overall
responsibilities with respect to the Mileage Trust and to other clients of the
Manager as to which the Manager exercises investment discretion.





                                       2
<PAGE>   3
The Mileage Trust agrees that any entity or person associated with the Manager
which is a member of a national securities exchange is authorized to effect any
transaction on such exchange for the account of the Mileage Trust which is
permitted by Section 11(a) of the Securities Exchange Act of 1934, as amended,
and the Mileage Trust hereby consents to the retention of compensation for such
transactions.

         (c)     The Manager will provide the Board of Trustees on a regular
basis with economic and investment analyses and reports and make available to
the Board upon request any economic, statistical and investment services
normally available to institutional or other customers of the Manager.

         (d)     Any of the foregoing functions with respect to any or all
Portfolios may be delegated by the Manager, at the Manager's expense, to one or
more appropriate parties, including an affiliated party ("Advisers"), subject
to such approval by the Board of Trustees and shareholders of each affected
Portfolio as may be required by the 1940 Act.  In connection with any such
delegation, the Manager shall:

                 (i)      oversee the performance of delegated functions by any
         Adviser and furnish the Mileage Trust with quarterly evaluations and
         analyses concerning the performance of delegated responsibilities by
         those parties;

                 (ii)     allocate the portion of each Portfolio's assets to be
         managed by an Adviser and coordinate the investment activities of the
         Advisers;

                 (iii) if appropriate, recommend changes in Advisers or the
         addition of Advisers, subject to the necessary approvals under the
         1940 Act; and

                 (iv)     be responsible for compensating the Advisers in the
         manner specified in its advisory agreements with the Advisers.


         3.  DUTIES AS ADMINISTRATOR.  The Manager will assist in administering
the affairs of the Mileage Trust subject to the supervision of the Board of
Trustees and the following understandings:

         (a)  The Manager will supervise all aspects of the operations of the
Mileage Trust except as hereinafter set forth; provided, however, that nothing
herein contained shall be deemed to relieve or deprive the Board of Trustees of
its responsibility for and control of the conduct of the Mileage Trust's
affairs.





                                       3
<PAGE>   4

         (b)  The Manager will investigate and, with appropriate approval of
the Board of Trustees, select necessary service companies to conduct certain
operations of the Mileage Trust, including the Mileage Trust's custodian,
transfer agent, dividend disbursing agent, distributor, independent public
accountant and attorney.

         (c)  The Manager will provide the Mileage Trust with such
administrative and clerical services as are deemed necessary or advisable by
the Board of Trustees, including the maintenance of certain books and records
of the Mileage Trust and each Portfolio which are not maintained by the Mileage
Trust's custodian or any Adviser.

         (d)  The Manager will arrange, but not pay, for the periodic updating
of prospectuses and statements of additional information and supplements
thereto, proxy material, tax returns and reports to shareholders and the
Securities and Exchange Commission.

         (e)  The Manager will provide the Mileage Trust with, or obtain for
it, adequate office space and all necessary office equipment and services,
including telephone service, heat, utilities, stationery supplies and similar
items.

         (f)  The Manager will hold itself available to respond to shareholder
inquiries.

         (g)     Any of the foregoing functions with respect to any or all
Portfolios may be delegated by the Manager, at the Manager's expense, to
another appropriate party (including an affiliated party), subject to such
approval by the Board of Trustees.  The Manager shall oversee the performance
of delegated functions by any such party and shall furnish to the Mileage Trust
with quarterly evaluations and analyses concerning the performance of delegated
responsibilities by those parties.

         4.      SERVICES NOT EXCLUSIVE.  The services furnished by the Manager
hereunder are not to be deemed exclusive and the Manager shall be free to
furnish similar services to others so long as its services under this Agreement
are not impaired thereby.

         5.      BOOKS AND RECORDS.  In compliance with the requirements of
Rule 3la-3 under the 1940 Act, the Manager hereby agrees that all records which
it maintains for the Mileage Trust are the property of the Mileage Trust and
further agrees to surrender promptly to the Mileage Trust any of such records
upon the Mileage Trust's request.  The Manager further agrees to preserve for
the periods prescribed by Rule 3la-2 under the 1940 Act the





                                       4
<PAGE>   5
records required to be maintained by Rule 3la-1 under the 1940 Act.

         6.      EXPENSES.  During the term of this Agreement, the Mileage
Trust will bear all expenses not specifically assumed by the Manager incurred
in its operations and the offering of its shares.  Expenses borne by the
Mileage Trust will include, but not be limited to, the following (or each
Portfolio's proportionate share of the following): (a) brokerage commissions
relating to securities purchased or sold by the Mileage Trust or any losses
incurred in connection therewith; (b) fees payable to and expenses incurred on
behalf of the Mileage Trust by the Manager; (c) expenses of organizing the
Mileage Trust and the Portfolios; (d) filing fees and expenses relating to the
registration and qualification of the Mileage Trust's shares and the Mileage
Trust under federal or state securities laws and maintaining such registrations
and qualifications; (e) distribution fees, if any;  (f) fees and salaries
payable to the members of the Board of Trustees and officers who are not
officers or employees of the Manager or interested persons (as defined in the
1940 Act) of any investment adviser or distributor of the Mileage Trust; (g)
taxes (including any income or franchise taxes) and governmental fees; (h)
costs of any liability, uncollectible items of deposit and other insurance or
fidelity bonds; (i) any costs, expenses or losses arising out of any liability
of or claim for damage or other relief asserted against the Mileage Trust for
violation of any law; (j) legal, accounting and auditing expenses, including
legal fees of special counsel for the independent trustees; (k) charges of
custodians, transfer agents and other agents; (l) costs of preparing share
certificates; (m) expenses of setting in type and printing Prospectuses and
supplements thereto for existing shareholders, reports and statements to
shareholders and proxy material; (n) any extraordinary expenses (including fees
and disbursements of counsel) incurred by the Mileage Trust; and (o) fees and
other expenses incurred in connection with membership in investment company
organizations.

         The Mileage Trust may pay directly any expense incurred by it in its
normal operations and, if any such payment is consented to by the Manager and
acknowledged as otherwise payable by the Manager pursuant to this Agreement,
the Mileage Trust may reduce the fee payable to the Manager pursuant to
paragraph 7 hereof by such amount.  To the extent that such deductions exceed
the fee payable to the Manager on any monthly payment date, such excess shall
be carried forward and deducted in the same manner from the fee payable on
succeeding monthly payment dates.

         In addition, if the expenses borne by the Mileage Trust or any
Portfolio in any fiscal year exceed the applicable expense





                                       5
<PAGE>   6
limitations imposed by the securities regulations of any state in which shares
are registered or qualified for sale to the public, the Manager will reimburse
the Mileage Trust or Portfolio for any excess up to the amount of the fee
payable to it during that fiscal year pursuant to paragraph 7 hereof.

         7.  COMPENSATION.  For the services provided and the expenses assumed
pursuant to this Agreement with respect to each Portfolio, the Mileage Trust
will pay the Manager, effective from the date of this Agreement, a fee which is
computed daily and paid monthly from each Portfolio's assets at the annual
rates as percentages of that Portfolio's average daily net assets under
Manager's management as set forth in the attached Schedule A, which schedule
can be modified from time to time to reflect changes in annual rates or the
addition or deletion of a Portfolio from the terms of this Agreement, subject
to appropriate approvals required by the 1940 Act.  To the extent that a
Portfolio invests all of its investable assets (i.e., securities and cash) in
another registered investment company, however, only that portion of the fee
attributable to that Fund as specified in Schedule A attached hereto shall be
paid for the period that such Fund's assets are so invested.  If this Agreement
becomes effective or terminates with respect to any Portfolio before the end of
any month, the fee for the period from the effective date to the end of the
month or from the beginning of such month to the date of termination, as the
case may be, shall be prorated according to the proportion that such period
bears to the full month in which such effectiveness or termination occurs.

         8.  LIMITATION OF LIABILITY OF THE MANAGER.  The Manager shall not be
liable for any error of judgment or mistake of law or for any loss suffered by
the Mileage Trust or any Portfolio in connection with the matters to which this
Agreement relate except a loss resulting from the willful misfeasance, bad
faith or gross negligence on its part in the performance of its duties or from
reckless disregard by it of its obligations and duties under this Agreement.
Any person, even though also an officer, partner, employee, or agent of the
Manager, who may be or become an officer, trustee, employee or agent of the
Mileage Trust shall be deemed, when rendering services to the Mileage Trust or
acting in any business of the Mileage Trust, to be rendering such services to
or acting solely for the Mileage Trust and not as an officer, partner,
employee, or agent or one under the control or direction of the Manager even
though paid by it.

         9.  DURATION AND TERMINATION.  This Agreement shall become effective
upon its execution; provided that, with respect to any Portfolio now existing
or hereafter created, this agreement shall not take effect unless it first has
been approved by a vote of





                                       6
<PAGE>   7
the majority of those trustees of the Mileage Trust who are not parties to this
Agreement or interested persons of such party, cast in person at a meeting
called for the purpose of voting on such approval, and by vote of a majority of
that Portfolio's outstanding voting securities.  This Agreement shall remain in
full force and effect continuously thereafter until terminated without the
payment of any penalty by any one of the following:

         (a)  By vote of a majority of its trustees, or by the affirmative vote
of a majority of the outstanding Shares of such Portfolio, the Mileage Trust
may at any time terminate this Agreement with respect to any or all Portfolios
by providing not more than 60 days' written notice delivered or mailed by
registered mail, postage prepaid, to the Manager at its principal offices.

         (b)  With respect to any Portfolio, if (i) the trustees or the
shareholders of that Portfolio by the affirmative vote of a majority of the
outstanding shares of such Portfolio, and (ii) a majority of the trustees who
are not interested persons of the Mileage Trust or of the Manager or of any
Adviser, by vote cast in person at a meeting called for the purpose of voting
on such approval, do not specifically approve at least annually the continuance
of this Agreement, then this Agreement shall automatically terminate at the
close of business on the second anniversary of its execution, or upon the
expiration of one year from the effective date of the last such continuance,
whichever is later; provided, however, that if the continuance of this
Agreement is submitted to the shareholders of a Portfolio for their approval
and such shareholders fail to approve such continuance of this Agreement as
provided herein, the Manager may continue to serve hereunder in a manner
consistent with the 1940 Act and the rules and regulations thereunder with
respect to that Portfolio.

         (c)  The Manager may at any time terminate this Agreement with respect
to any or all Portfolios by not less than 60 days' written notice delivered or
mailed by registered mail, postage prepaid to the Mileage Trust.

         (d)     This Agreement automatically and immediately will terminate in
the event of its assignment.

         10.     AMENDMENT OF THIS AGREEMENT.  No provision of this Agreement
may be changed, waived, discharged or terminated orally, but only by an
instrument in writing signed by the party against which enforcement of the
change, waiver, discharge or termination is sought, and no material amendment
of this Agreement with respect to any Portfolio shall be effective until





                                       7
<PAGE>   8
approved by vote of the holders of a majority of that Portfolio's outstanding
voting securities.

         11.     NAME OF MILEAGE TRUST.  The Mileage Trust may use the name
"American AAdvantage" or "American AAdvantage Mileage Funds" only for so long
as this Agreement or any extension, renewal or amendment hereof remains in
effect, including any similar agreement with any organization which shall have
succeeded to the business of the Manager.  At such time as such an agreement
shall no longer be in effect, the Mileage Trust will (to the extent that it
lawfully can) cease to use any name derived from American AAdvantage Mileage
Funds, or AMR Investment Services, Inc., or any successor organization.

         12.     GOVERNING LAW.  This Agreement shall be construed in
accordance with the laws of the State of Texas, without giving effect to the
conflicts of laws principles thereof, and in accordance with the 1940 Act.  To
the extent that the applicable laws of the State of Texas conflict with the
applicable provisions of the 1940 Act, the latter shall control.

         13.     DEFINITIONS.  As used in this Agreement, the terms "majority
of the outstanding voting securities," "interested person," and "assignment"
shall have the same meanings as such terms have in the 1940 Act.

         14.     SEVERABILITY.  If any provision of this Agreement shall be
held or made invalid by a court decision, statute, rule or otherwise, the
remainder of this Agreement shall not be affected thereby.  This Agreement
shall be binding upon and shall inure to the benefit of the parties hereto and
their respective successors.

         15.     NOTICE.  Notice hereby is given that the Mileage Trust's
Declaration of Trust is on file with the Secretary of State of the Commonwealth
of Massachusetts and the Declaration of Trust and this Agreement are executed
by the Mileage Trust's Trustees and/or officers in their capacities as Trustees
and/or officers, and the obligations of the Declaration of Trust and this
Agreement are not binding upon any of them or the shareholders individually;
rather, they are binding only upon the assets and property of Mileage Trust.

         16.     MISCELLANEOUS.  The captions in this Agreement are included
for convenience of reference only and in no way define or delimit any of the
provisions hereof or otherwise affect their construction or effect.





                                       8
<PAGE>   9


         IN WITNESS WHEREOF, the parties hereto have caused this instrument to
be executed by their officers designated below as of the day and year first
above written.


Attest:                           AMERICAN AADVANTAGE MILEAGE FUNDS


By: /s/ Janice S. Goldshmid       By: /s/ Barry Y. Greenberg
    -------------------------         ----------------------

Attest:                           AMR INVESTMENT SERVICES, INC.



By: /s/ Janice S. Goldshmid       By: /s/ William F. Quinn         
    -------------------------         -----------------------------





                                       9
<PAGE>   10
                                   SCHEDULE A
                      TO THE MANAGEMENT AGREEMENT BETWEEN
                         AMR INVESTMENT SERVICES, INC.
                                    AND THE
                       AMERICAN AADVANTAGE MILEAGE FUNDS

         As compensation pursuant to section 7 of the Management Agreement
between AMR Investment Services, Inc. (the "Manager") and American AAdvantage
Mileage Funds (the "Mileage Trust"), the Mileage Trust shall pay to the Manager
a fee, computed daily and paid monthly, at the following annual rates as
percentages of each Portfolio's average daily net assets:

                 (1) 0.20% of the net assets of the American AAdvantage Money
         Market Mileage Fund, the American AAdvantage Municipal Money Market
         Mileage Fund, and the American AAdvantage U.S. Treasury Money Market
         Mileage Fund;

                 (2) 0.50% of the net assets of the American AAdvantage
                     Limited-Term Income Mileage Fund;

                 (3) 0.35% of the net assets of the American AAdvantage
         Balanced Mileage Fund, the American AAdvantage Growth and Income
         Mileage Fund, and the American AAdvantage International Equity Mileage
         Fund;

                 (4) plus all fees payable by the Manager with respect to such
         Funds pursuant to any Investment Advisory Agreement entered into
         pursuant to Paragraph 2(d) of said Management Agreement.

         To the extent that a Portfolio invests all of its investable assets
(i.e., securities and cash) in another registered investment company, however,
the Mileage Trust shall pay to the Manager as compensation pursuant to section
7 of the Management Agreement the following fee, computed daily and paid
monthly, at the following annual rates as percentages of each Portfolio's
average daily net assets:

                 (1) 0.25% of the net assets of the American AAdvantage
         Balanced Mileage Fund, the American AAdvantage Growth and Income
         Mileage Fund, the American AAdvantage International Equity Mileage
         Fund and the American AAdvantage Limited-Term Income Fund; and

                 (2) 0.05% of the net assets of the American AAdvantage Money
         Market Mileage Fund, the American AAdvantage Municipal Money Market
         Mileage Fund, and the American AAdvantage U.S. Treasury Money Market
         Mileage Fund.

         DATED:  October 1, 1995





                                       10

<PAGE>   1
                                                              Exhibit 99.b.5.b.i

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                         INVESTMENT ADVISORY AGREEMENT


         AGREEMENT made this 1 day of November, 1995 by and between AMR
Investment Services, Inc., a Delaware Corporation, (the "Manager") and
Independence Investment Associates, Inc. (the "Adviser");

         WHEREAS, American AAdvantage Mileage Funds (the "Trust"), a
Massachusetts Business Trust, is an open-end, diversified management investment
company registered under the Investment Company Act of 1940, as amended,
consisting of several series (portfolios) of shares, each having its own
investment policies; and

         WHEREAS, the Trust has retained the Manager to provide the Trust with
business and asset management services, subject to the control of the Board of
Trustees;

         WHEREAS, the Trust's agreement with the Manager permits the Manager to
delegate to other parties certain of its asset management responsibilities; and

         WHEREAS, the Manager desires to retain the Adviser to render
investment management services to the Trust with respect to certain of its
investment portfolios and such other investment portfolios as the Trust and the
Adviser may agree upon and so specify in the Schedule(s) attached hereto
(collectively the "Portfolios") and as described in the Trust's registration
statement on Form N-1A as amended from time to time, and the Adviser is willing
to render such services;

         NOW, THEREFORE, in consideration of mutual covenants herein contained,
the parties hereto agree as follows:

         1. DUTIES OF THE ADVISER. The Manager employs the Adviser to manage
the investment and reinvestment of such portion, if any, of the Portfolios'
assets as is designated by the Manager from time to time, and with respect to
such assets, to continuously review, supervise and administer the investment
program of the Portfolios, to determine in the Advisers discretion the
securities to be purchased or sold, to provide the Manager and the Trust with
records concerning the Adviser's activities which the Trust is required to
maintain, and to render regular reports to the Manager and to the Trust's
officers and Trustees
<PAGE>   2
concerning the Adviser's discharge of the foregoing responsibilities.  The
Adviser shall discharge the foregoing responsibilities subject to the Manager's
oversight and the control of the officers and the Trustees of the Trust and in
compliance with such policies as the Trustees may from time to time establish,
and in compliance with the objectives, policies, and limitations for each such
Portfolio set forth in the Trust's current registration statement as amended
from time to time and applicable laws and regulations.  The Adviser accepts
such employment and agrees to render the services for the compensation
specified herein and to provide at its own expense the office space,
furnishings and equipment and the personnel required by it to perform the
services on the terms and for the compensation provided herein.  The Manager
will instruct the Trust's Custodian(s) to hold and/or transfer the Portfolios'
assets in accordance with Proper Instructions received from the Adviser.  (For
this purpose the term "Proper Instructions" shall have the meaning(s) specified
in the applicable agreements(s) between the Trust and its Custodian(s).)  The
Adviser will not be responsible for the cost of securities or brokerage
commissions or any other Trust expenses except as specified in this Agreement.

         2.  PORTFOLIO TRANSACTIONS.  The Adviser is authorized to select the
brokers or dealers (including, to the extent permitted by law and applicable
Trust guidelines, the Adviser or any of its affiliates) that will execute the
purchases and sales of portfolio securities for the Portfolios and is directed
to use its best efforts to obtain the best net results with respect to brokers'
commissions and discounts as described in the Trust's current registration
statement as amended from time to time.  In selecting brokers or dealers, the
Adviser may give consideration to factors other than price, including, but not
limited to, research services and market information.  Any such services or
information which the Adviser receives in connection with activities for the
Trust may also be used for the benefit of other clients and customers of the
Adviser or any of its affiliates.  The Adviser will promptly communicate to the
Manager and to the officers and the Trustees of the Trust such information
relating to portfolio transactions as they may reasonably request.

         3.  COMPENSATION OF THE ADVISER.  For the services to be rendered by
the Adviser as provided in Sections 1 and 2 of this Agreement, the Manager
shall pay to the Adviser compensation at the rate specified in Schedule(s)
attached hereto and made a part of this Agreement.  Such compensation shall be
paid to the Adviser quarterly in arrears, and shall be calculated by applying
the annual percentage rate(s) as specified in the attached
<PAGE>   3
Schedule(s) to the average month-end assets of the specified portfolios during
the relevant quarter.  Solely for the purpose of calculating the applicable
annual percentage rates specified in the attached Schedule(s), there shall be
included such other assets as are specified in said Schedule(s).

         4.  OTHER SERVICES.  At the request of the Trust or the Manager, the
Adviser in its discretion may make available to the Trust office facilities,
equipment, personnel, and other services.  Such office facilities, equipment,
personnel and services shall be provided for or rendered by the Adviser and
billed to the Trust or the Manager at a price to be agreed upon by the Adviser
and the Trust or the Manager.

         5.  REPORTS.  The Manager (on behalf of the Trust) and the Adviser
agree to furnish to each other, if applicable, current prospectuses, proxy
statements, reports to shareholders, certified copies of their financial
statements, and such other information with regard to their affairs as each may
reasonably request.

         6.  STATUS OF ADVISER.  The services of the Adviser to the Trust are
not to be deemed exclusive, and the Adviser and its directors, officers,
employees and affiliates shall be free to render similar services to others so
long as its services to the Trust are not impaired thereby.  The Adviser shall
be deemed to be an independent contractor and shall, unless otherwise expressly
provided or authorized, have no authority to act for or represent the Manager
or the Trust in any way or otherwise be deemed an agent to the Manager or the
Trust.

         7.  CERTAIN RECORDS.  Any records required to be maintained and
preserved pursuant to the provisions of Rule 31a-1 and Rule 31a-2 promulgated
under the Investment Company Act of 1940 which are prepared or maintained by
the Adviser on behalf of the Manager or the Trust are the property of the
Manager or the Trust and will be surrendered promptly to the Manager or Trust
on request.

         8.  LIABILITY OF ADVISER.  No provision of this Agreement shall be
deemed to protect the Adviser against any liability to the Trust or its
shareholders to which it might otherwise be subject by reason of any willful
misfeasance, bad faith, or gross negligence in the performance of its duties or
the reckless disregard of its obligations under this Agreement.

         9.  PERMISSIBLE INTERESTS.  To the extent permitted by law, Trustees,
agents, and shareholders of the Trust are or may be
<PAGE>   4
interested in the Adviser (or any successor thereof) as directors, partners,
officers, or shareholders, or otherwise; directors, partners, officers, agents,
and shareholders of the Adviser are or may be interested in the Trust as
Trustees, shareholders or otherwise; and the Adviser (or any successor thereof)
is or may be interested in the Trust as a shareholder or otherwise; provided
that all such interests shall be fully disclosed between the parties on an
ongoing basis and in the Trust's registration statement as required by law.

         10. DURATION AND TERMINATION.  This Agreement, unless sooner
terminated as provided herein, shall continue for two years after its initial
approval as to each Portfolio and thereafter for periods of one year for so
long as such continuance thereafter is specifically approved at least annually
(a) by the vote of a majority of those Trustees of the Trust who are not
parties to this Agreement or interested persons of any such party, cast in
person  at a meeting called for the purpose of voting on such approval, and (b)
by the Trustees of the Trust or by vote of a majority of the outstanding voting
securities of each Portfolio; provided, however, that if the shareholders of
any Portfolio fail to approve the Agreement as provided herein, the Adviser may
continue to serve hereunder in the manner and to the extent permitted by the
Investment Company Act of 1940 and rules thereunder.  The foregoing requirement
that continuance of this Agreement be "specifically approved at least annually"
shall be construed in a manner consistent with the Investment Company Act of
1940 and the rules and regulations thereunder.  This Agreement may be
terminated as to any Portfolio at any time, without the payment of any penalty,
by the Manager, by vote of a majority of the Trustees of the Trust or by vote
of a majority of the outstanding voting securities of the Portfolio on not less
than 30 days nor more than 60 days written notice to the Adviser, or by the
Adviser at any time without the payment of any penalty, on 60 days written
notice to the Trust.  This Agreement will automatically and immediately
terminate in the event of its assignment.  Any notice under this Agreement
shall be given in writing, addressed and delivered, or mailed postpaid, to the
other party at the primary office of such party, unless such party has
previously designated another address.

         As used in this Section 10, the terms "assignment", "interested
persons", and a "vote of a majority of the outstanding voting securities" shall
have the respective meanings set forth in the Investment company Act of 1940
and the rules and regulations thereunder, subject to such exemptions as may be
granted by the Securities and Exchange Commission under said Act.
<PAGE>   5
         11.  SEVERABILITY.  If any provision of this Agreement shall be held
or made invalid by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby.

         A copy of the Declaration of Trust of the Trust is on file with the
Secretary of the Commonwealth of Massachusetts, and notice is hereby given that
this instrument is not binding upon any of the Trustees, officers, or
shareholders of the Trust individually.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the day and year first written above.


Independence Investment
Associates Inc.                           AMR INVESTMENT SERVICES INC.
- - ---------------------------               


By /s/Mark C. Lapman                      By /s/ W.F. Quinn             
   ------------------------                  ---------------------------
                                             William F. Quinn

Its Executive Vice President              Its President                 
    ------------------------                  --------------------------
<PAGE>   6
                                   Schedule A
                                     to the
                       American AAdvantage Mileage Funds
                         Investment Advisory Agreement
                                    between
                         AMR Investment Services, Inc.
                                      and
                    Independence Investment Associates, Inc.


         AMR Investment Services, Inc. shall pay compensation to Independence
Investment Associates, Inc. pursuant to section 3 of the Investment Advisory
Agreement between said parties in accordance with the following annual
percentage rates:

         0.50% per annum on the first $30 million
         0.25% per annum on the next $70 million
         0.20% per annum on all excess assets


         In calculating the amount of assets under management solely for the
purposes of determining the applicable percentage rate, there should be
included all American Airlines Trust Funds under management by the Adviser.

         To the extent that a Portfolio invests all of its investable assets
(i.e., securities and cash) in another investment company, however, no portion
of the advisory fee attributable to that Portfolio as specified above shall be
paid for the period that such Portfolio's assets are so invested.


DATED: November 1, 1995

<PAGE>   1
                                                             Exhibit 99.b.5.b.ii

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                         INVESTMENT ADVISORY AGREEMENT


         AGREEMENT made this 1 day of November, 1995 by and between AMR
Investment Services, Inc., a Delaware Corporation, (the "Manager") and Morgan
Stanley Asset Management Inc. (the "Adviser");

         WHEREAS, American AAdvantage Mileage Funds (the "Trust"), a
Massachusetts Business Trust, is an open-end, diversified management investment
company registered under the Investment Company Act of 1940, as amended,
consisting of several series (portfolios) of shares, each having its own
investment policies; and

         WHEREAS, the Trust has retained the Manager to provide the Trust with
business and asset management services, subject to the control of the Board of
Trustees;

         WHEREAS, the Trust's agreement with the Manager permits the Manager to
delegate to other parties certain of its asset management responsibilities; and

         WHEREAS, the Manager desires to retain the Adviser to render
investment management services to the Trust with respect to certain of its
investment portfolios and such other investment portfolios as the Trust and the
Adviser may agree upon and so specify in the Schedule(s) attached hereto
(collectively the "Portfolios") and as described in the Trust's registration
statement on Form N-1A as amended from time to time, and the Adviser is willing
to render such services;

         NOW, THEREFORE, in consideration of mutual covenants herein contained,
the parties hereto agree as follows:

         1. DUTIES OF THE ADVISER. The Manager employs the Adviser to manage
the investment and reinvestment of such portion, if any, of the Portfolios'
assets as is designated by the Manager from time to time, and with respect to
such assets, to continuously review, supervise and administer the investment
program of the Portfolios, to determine in the Advisers discretion the
securities to be purchased or sold, to provide the Manager and the Trust with
records concerning the Adviser's activities which the Trust is required to
maintain, and to render regular reports to the Manager and to the Trust's
officers and Trustees
<PAGE>   2
concerning the Adviser's discharge of the foregoing responsibilities.  The
Adviser shall discharge the foregoing responsibilities subject to the Manager's
oversight and the control of the officers and the Trustees of the Trust and in
compliance with such policies as the Trustees may from time to time establish,
and in compliance with the objectives, policies, and limitations for each such
Portfolio set forth in the Trust's current registration statement as amended
from time to time and applicable laws and regulations.  The Adviser accepts
such employment and agrees to render the services for the compensation
specified herein and to provide at its own expense the office space,
furnishings and equipment and the personnel required by it to perform the
services on the terms and for the compensation provided herein.  The Manager
will instruct the Trust's Custodian(s) to hold and/or transfer the Portfolios'
assets in accordance with Proper Instructions received from the Adviser.  (For
this purpose the term "Proper Instructions" shall have the meaning(s) specified
in the applicable agreements(s) between the Trust and its Custodian(s).)  The
Adviser will not be responsible for the cost of securities or brokerage
commissions or any other Trust expenses except as specified in this Agreement.

         2.  PORTFOLIO TRANSACTIONS.  The Adviser is authorized to select the
brokers or dealers (including, to the extent permitted by law and applicable
Trust guidelines, the Adviser or any of its affiliates) that will execute the
purchases and sales of portfolio securities for the Portfolios and is directed
to use its best efforts to obtain the best net results with respect to brokers'
commissions and discounts as described in the Trust's current registration
statement as amended from time to time.  In selecting brokers or dealers, the
Adviser may give consideration to factors other than price, including, but not
limited to, research services and market information.  Any such services or
information which the Adviser receives in connection with activities for the
Trust may also be used for the benefit of other clients and customers of the
Adviser or any of its affiliates.  The Adviser will promptly communicate to the
Manager and to the officers and the Trustees of the Trust such information
relating to portfolio transactions as they may reasonably request.

         3.  COMPENSATION OF THE ADVISER.  For the services to be rendered by
the Adviser as provided in Sections 1 and 2 of this Agreement, the Manager
shall pay to the Adviser compensation at the rate specified in Schedule(s)
attached hereto and made a part of this Agreement.  Such compensation shall be
paid to the Adviser quarterly in arrears, and shall be calculated by applying
the annual percentage rate(s) as specified in the attached
<PAGE>   3
Schedule(s) to the average month-end assets of the specified portfolios during
the relevant quarter.  Solely for the purpose of calculating the applicable
annual percentage rates specified in the attached Schedule(s), there shall be
included such other assets as are specified in said Schedule(s).

         The Adviser agrees that the fee charged to the Manager will be no more
than that charged for any other client of similar size receiving comparable
services.  Furthermore, the Adviser agrees to notify the Manager on a timely
basis of any fee schedule it enters into with any other client of similar size
which is lower than the fee paid by the Manager.

         4.  OTHER SERVICES.  At the request of the Trust or the Manager, the
Adviser in its discretion may make available to the Trust office facilities,
equipment, personnel, and other services.  Such office facilities, equipment,
personnel and services shall be provided for or rendered by the Adviser and
billed to the Trust or the Manager at a price to be agreed upon by the Adviser
and the Trust or the Manager.

         5.  REPORTS.  The Manager (on behalf of the Trust) and the Adviser
agree to furnish to each other, if applicable, current prospectuses, proxy
statements, reports to shareholders, certified copies of their financial
statements, and such other information with regard to their affairs as each may
reasonably request.

         6.  STATUS OF ADVISER.  The services of the Adviser to the Trust are
not to be deemed exclusive, and the Adviser and its directors, officers,
employees and affiliates shall be free to render similar services to others so
long as its services to the Trust are not impaired thereby.  The Adviser shall
be deemed to be an independent contractor and shall, unless otherwise expressly
provided or authorized, have no authority to act for or represent the Manager
or the Trust in any way or otherwise be deemed an agent to the Manager or the
Trust.

         7.  CERTAIN RECORDS.  Any records required to be maintained and
preserved pursuant to the provisions of Rule 31a-1 and Rule 31a-2 promulgated
under the Investment Company Act of 1940 which are prepared or maintained by
the Adviser on behalf of the Manager or the Trust are the property of the
Manager or the Trust and will be surrendered promptly to the Manager or Trust
on request.

         8.  LIABILITY OF ADVISER.  No provision of this Agreement shall be
deemed to protect the Adviser against any liability to
<PAGE>   4
the Trust or its shareholders to which it might otherwise be subject by reason
of any willful misfeasance, bad faith, or gross negligence in the performance
of its duties or the reckless disregard of its obligations under this
Agreement.

         9.  PERMISSIBLE INTERESTS.  To the extent permitted by law, Trustees,
agents, and shareholders of the Trust are or may be interested in the Adviser
(or any successor thereof) as directors, partners, officers, or shareholders,
or otherwise; directors, partners, officers, agents, and shareholders of the
Adviser are or may be interested in the Trust as Trustees, shareholders or
otherwise; and the Adviser (or any successor thereof) is or may be interested
in the Trust as a shareholder or otherwise; provided that all such interests
shall be fully disclosed between the parties on an ongoing basis and in the
Trust's registration statement as required by law.

         10. DURATION AND TERMINATION.  This Agreement, unless sooner
terminated as provided herein, shall continue for two years after its initial
approval as to each Portfolio and thereafter for periods of one year for so
long as such continuance thereafter is specifically approved at least annually
(a) by the vote of a majority of those Trustees of the Trust who are not
parties to this Agreement or interested persons of any such party, cast in
person  at a meeting called for the purpose of voting on such approval, and (b)
by the Trustees of the Trust or by vote of a majority of the outstanding voting
securities of each Portfolio; provided, however, that if the shareholders of
any Portfolio fail to approve the Agreement as provided herein, the Adviser may
continue to serve hereunder in the manner and to the extent permitted by the
Investment Company Act of 1940 and rules thereunder.  The foregoing requirement
that continuance of this Agreement be "specifically approved at least annually"
shall be construed in a manner consistent with the Investment Company Act of
1940 and the rules and regulations thereunder.  This Agreement may be
terminated as to any Portfolio at any time, without the payment of any penalty,
by the Manager, by vote of a majority of the Trustees of the Trust or by vote
of a majority of the outstanding voting securities of the Portfolio on not less
than 30 days nor more than 60 days written notice to the Adviser, or by the
Adviser at any time without the payment of any penalty, on 60 days written
notice to the Trust.  This Agreement will automatically and immediately
terminate in the event of its assignment.  Any notice under this Agreement
shall be given in writing, addressed and delivered, or mailed postpaid, to the
other party at the primary office of such party, unless such party has
previously designated another address.
<PAGE>   5
         As used in this Section 10, the terms "assignment", "interested
persons", and a "vote of a majority of the outstanding voting securities" shall
have the respective meanings set forth in the Investment company Act of 1940
and the rules and regulations thereunder, subject to such exemptions as may be
granted by the Securities and Exchange Commission under said Act.

         11.  SEVERABILITY.  If any provision of this Agreement shall be held
or made invalid by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby.

         A copy of the Declaration of Trust of the Trust is on file with the
Secretary of the Commonwealth of Massachusetts, and notice is hereby given that
this instrument is not binding upon any of the Trustees, officers, or
shareholders of the Trust individually.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the day and year first written above.


Morgan Stanley Asset Management            AMR INVESTMENT SERVICES INC.
- - -------------------------------                                
                           Inc.

   
By  /s/ A. MACDONALD CEPUTO                By /s/ W.F. QUINN             
    ------------------------                  ---------------------------
                                              William F. Quinn
    

Its Managing Director                      Its President                 
    -----------------------                    --------------------------
<PAGE>   6
                                   Schedule A
                                     to the
                       American AAdvantage Mileage Funds
                         Investment Advisory Agreement
                                    between
                         AMR Investment Services, Inc.
                                      and
                      Morgan Stanley Asset Management Inc.


         AMR Investment Services, Inc. shall pay compensation to Morgan Stanley
Asset Management Inc. pursuant to section 3 of the Investment Advisory
Agreement between said parties in accordance with the following annual
percentage rates:

         0.80% per annum on the first $25 million
         0.60% per annum on the next $25 million
         0.50% per annum on the next $25 million
         0.40% per annum on all excess assets


         In calculating the amount of assets under management solely for the
purposes of determining the applicable percentage rate, there should be
included all American Airlines Trust Funds under management by the Adviser.

         To the extent that a Portfolio invests all of its investable assets
(i.e., securities and cash) in another investment company, however, no portion
of the advisory fee attributable to that Portfolio as specified above shall be
paid for the period that such Portfolio's assets are so invested.


DATED: November 1, 1995

<PAGE>   1
                                                            Exhibit 99.b.5.b.iii

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                         INVESTMENT ADVISORY AGREEMENT


         AGREEMENT made this 1 day of November, 1995 by and between AMR
Investment Services, Inc., a Delaware Corporation, (the "Manager") and
Templeton Investment Counsel, Inc.  (the "Adviser");

         WHEREAS, American AAdvantage Mileage Funds (the "Trust"), a
Massachusetts Business Trust, is an open-end, diversified management investment
company registered under the Investment Company Act of 1940, as amended,
consisting of several series (portfolios) of shares, each having its own
investment policies; and

         WHEREAS, the Trust has retained the Manager to provide the Trust with
business and asset management services, subject to the control of the Board of
Trustees;

         WHEREAS, the Trust's agreement with the Manager permits the Manager to
delegate to other parties certain of its asset management responsibilities; and

         WHEREAS, the Manager desires to retain the Adviser to render
investment management services to the Trust with respect to certain of its
investment portfolios and such other investment portfolios as the Trust and the
Adviser may agree upon and so specify in the Schedule(s) attached hereto
(collectively the "Portfolios") and as described in the Trust's registration
statement on Form N-1A as amended from time to time, and the Adviser is willing
to render such services;

         NOW, THEREFORE, in consideration of mutual covenants herein contained,
the parties hereto agree as follows:

         1. DUTIES OF THE ADVISER. The Manager employs the Adviser to manage
the investment and reinvestment of such portion, if any, of the Portfolios'
assets as is designated by the Manager from time to time, and with respect to
such assets, to continuously review, supervise and administer the investment
program of the Portfolios, to determine in the Advisers discretion the
securities to be purchased or sold, to provide the Manager and the Trust with
records concerning the Adviser's activities which the Trust is required to
maintain, and to render regular reports to the Manager and to the Trust's
officers and Trustees
<PAGE>   2
concerning the Adviser's discharge of the foregoing responsibilities.  The
Adviser shall discharge the foregoing responsibilities subject to the Manager's
oversight and the control of the officers and the Trustees of the Trust and in
compliance with such policies as the Trustees may from time to time establish,
and in compliance with the objectives, policies, and limitations for each such
Portfolio set forth in the Trust's current registration statement as amended
from time to time and applicable laws and regulations.  The Adviser accepts
such employment and agrees to render the services for the compensation
specified herein and to provide at its own expense the office space,
furnishings and equipment and the personnel required by it to perform the
services on the terms and for the compensation provided herein.  The Manager
will instruct the Trust's Custodian(s) to hold and/or transfer the Portfolios'
assets in accordance with Proper Instructions received from the Adviser.  (For
this purpose the term "Proper Instructions" shall have the meaning(s) specified
in the applicable agreements(s) between the Trust and its Custodian(s).)  The
Adviser will not be responsible for the cost of securities or brokerage
commissions or any other Trust expenses except as specified in this Agreement.

         2.  PORTFOLIO TRANSACTIONS.  The Adviser is authorized to select the
brokers or dealers (including, to the extent permitted by law and applicable
Trust guidelines, the Adviser or any of its affiliates) that will execute the
purchases and sales of portfolio securities for the Portfolios and is directed
to use its best efforts to obtain the best net results with respect to brokers'
commissions and discounts as described in the Trust's current registration
statement as amended from time to time.  In selecting brokers or dealers, the
Adviser may give consideration to factors other than price, including, but not
limited to, research services and market information.  Any such services or
information which the Adviser receives in connection with activities for the
Trust may also be used for the benefit of other clients and customers of the
Adviser or any of its affiliates.  The Adviser will promptly communicate to the
Manager and to the officers and the Trustees of the Trust such information
relating to portfolio transactions as they may reasonably request.

         3.  COMPENSATION OF THE ADVISER.  For the services to be rendered by
the Adviser as provided in Sections 1 and 2 of this Agreement, the Manager
shall pay to the Adviser compensation at the rate specified in Schedule(s)
attached hereto and made a part of this Agreement.  Such compensation shall be
paid to the Adviser quarterly in arrears, and shall be calculated by applying
the annual percentage rate(s) as specified in the attached
<PAGE>   3
Schedule(s) to the average month-end assets of the specified portfolios during
the relevant quarter.  Solely for the purpose of calculating the applicable
annual percentage rates specified in the attached Schedule(s), there shall be
included such other assets as are specified in said Schedule(s).

         The Adviser shall be paid as its fee and as its compensation for
services rendered under this Agreement an amount computed and billed in
accordance with the billing procedure attached hereto as "Appendix A" and made
a part hereof.  The Adviser agrees that the fee charged to the Manager will be
no more than that charged for any other client of similar size regardless of
type except that the Adviser's clients before November 1, 1995 are excluded
from this provision.  Furthermore, the Adviser agrees to notify the Manager on
a timely basis of any fee schedule it enters into with any other client of
similar size which is lower than the fee paid by the Manager.

         4.  OTHER SERVICES.  At the request of the Trust or the Manager, the
Adviser in its discretion may make available to the Trust office facilities,
equipment, personnel, and other services.  Such office facilities, equipment,
personnel and services shall be provided for or rendered by the Adviser and
billed to the Trust or the Manager at a price to be agreed upon by the Adviser
and the Trust or the Manager.

         5.  REPORTS.  The Manager (on behalf of the Trust) and the Adviser
agree to furnish to each other, if applicable, current prospectuses, proxy
statements, reports to shareholders, certified copies of their financial
statements, and such other information with regard to their affairs as each may
reasonably request.

         6.  STATUS OF ADVISER.  The services of the Adviser to the Trust are
not to be deemed exclusive, and the Adviser and its directors, officers,
employees and affiliates shall be free to render similar services to others so
long as its services to the Trust are not impaired thereby.  The Adviser shall
be deemed to be an independent contractor and shall, unless otherwise expressly
provided or authorized, have no authority to act for or represent the Manager
or the Trust in any way or otherwise be deemed an agent to the Manager or the
Trust.

         7.  CERTAIN RECORDS.  Any records required to be maintained and
preserved pursuant to the provisions of Rule 31a-1 and Rule 31a-2 promulgated
under the Investment Company Act of 1940 which are prepared or maintained by
the Adviser on behalf of the Manager or the Trust are the property of the
Manager or the Trust
<PAGE>   4
and will be surrendered promptly to the Manager or Trust on request.

         8.  LIABILITY OF ADVISER.  No provision of this Agreement shall be
deemed to protect the Adviser against any liability to the Trust or its
shareholders to which it might otherwise be subject by reason of any willful
misfeasance, bad faith, or gross negligence in the performance of its duties or
the reckless disregard of its obligations under this Agreement.

         9.  PERMISSIBLE INTERESTS.  To the extent permitted by law, Trustees,
agents, and shareholders of the Trust are or may be interested in the Adviser
(or any successor thereof) as directors, partners, officers, or shareholders,
or otherwise; directors, partners, officers, agents, and shareholders of the
Adviser are or may be interested in the Trust as Trustees, shareholders or
otherwise; and the Adviser (or any successor thereof) is or may be interested
in the Trust as a shareholder or otherwise; provided that all such interests
shall be fully disclosed between the parties on an ongoing basis and in the
Trust's registration statement as required by law.

         10. DURATION AND TERMINATION.  This Agreement, unless sooner
terminated as provided herein, shall continue for two years after its initial
approval as to each Portfolio and thereafter for periods of one year for so
long as such continuance thereafter is specifically approved at least annually
(a) by the vote of a majority of those Trustees of the Trust who are not
parties to this Agreement or interested persons of any such party, cast in
person  at a meeting called for the purpose of voting on such approval, and (b)
by the Trustees of the Trust or by vote of a majority of the outstanding voting
securities of each Portfolio; provided, however, that if the shareholders of
any Portfolio fail to approve the Agreement as provided herein, the Adviser may
continue to serve hereunder in the manner and to the extent permitted by the
Investment Company Act of 1940 and rules thereunder.  The foregoing requirement
that continuance of this Agreement be "specifically approved at least annually"
shall be construed in a manner consistent with the Investment Company Act of
1940 and the rules and regulations thereunder.  This Agreement may be
terminated as to any Portfolio at any time, without the payment of any penalty,
by the Manager, by vote of a majority of the Trustees of the Trust or by vote
of a majority of the outstanding voting securities of the Portfolio on not less
than 30 days nor more than 60 days written notice to the Adviser, or by the
Adviser at any time without the payment of any penalty, on 60 days written
notice to the Trust.  This Agreement will automatically and immediately
terminate in the event of its
<PAGE>   5
assignment.  Any notice under this Agreement shall be given in writing,
addressed and delivered, or mailed postpaid, to the other party at the primary
office of such party, unless such party has previously designated another
address.

         As used in this Section 10, the terms "assignment", "interested
persons", and a "vote of a majority of the outstanding voting securities" shall
have the respective meanings set forth in the Investment company Act of 1940
and the rules and regulations thereunder, subject to such exemptions as may be
granted by the Securities and Exchange Commission under said Act.

         11.  SEVERABILITY.  If any provision of this Agreement shall be held
or made invalid by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby.

         A copy of the Declaration of Trust of the Trust is on file with the
Secretary of the Commonwealth of Massachusetts, and notice is hereby given that
this instrument is not binding upon any of the Trustees, officers, or
shareholders of the Trust individually.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the day and year first written above.


Templeton Investment Counsel           AMR INVESTMENT SERVICES INC.
- - --------------------------------                                


By /s/Gary P. Motyl                    By /s/ W.F. Quinn             
   ----------------------------           ---------------------------
     Gary P. Moyl                         William F. Quinn

    Executive Vice President &
Its Director                              President                 
    ---------------------------           ---------------------------
<PAGE>   6
                                   Schedule A
                                     to the
                       American AAdvantage Mileage Funds
                         Investment Advisory Agreement
                                    between
                         AMR Investment Services, Inc.
                                      and
                       Templeton Investment Counsel, Inc.


         AMR Investment Services, Inc. shall pay compensation to Templeton
Investment Counsel, Inc. pursuant to section 3 of the Investment Advisory
Agreement between said parties in accordance with the following annual
percentage rates:

         0.50% per annum on the first $100 million
         0.35% per annum on the next $50 million
         0.30% per annum on the next $250 million
         0.25% per annum on the excess over $400 million


         In calculating the amount of assets under management solely for the
purposes of determining the applicable percentage rate, there should be
included all American Airlines Trust Funds under management by the Adviser.

         To the extent that a Portfolio invests all of its investable assets
(i.e., securities and cash) in another investment company, however, no portion
of the advisory fee attributable to that Portfolio as specified above shall be
paid for the period that such Portfolio's assets are so invested.


DATED: November 1, 1995

<PAGE>   1
                                                             Exhibit 99.b.5.b.iv

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                         INVESTMENT ADVISORY AGREEMENT


         AGREEMENT made this 1 day of November, 1995 by and between AMR
Investment Services, Inc., a Delaware Corporation, (the "Manager") and Barrow,
Hanley, Mewhinney & Strauss, Inc. (the "Adviser");

         WHEREAS, American AAdvantage Mileage Funds (the "Trust"), a
Massachusetts Business Trust, is an open-end, diversified management investment
company registered under the Investment Company Act of 1940, as amended,
consisting of several series (portfolios) of shares, each having its own
investment policies; and

         WHEREAS, the Trust has retained the Manager to provide the Trust with
business and asset management services, subject to the control of the Board of
Trustees;

         WHEREAS, the Trust's agreement with the Manager permits the Manager to
delegate to other parties certain of its asset management responsibilities; and

         WHEREAS, the Manager desires to retain the Adviser to render
investment management services to the Trust with respect to certain of its
investment portfolios and such other investment portfolios as the Trust and the
Adviser may agree upon and so specify in the Schedule(s) attached hereto
(collectively the "Portfolios") and as described in the Trust's registration
statement on Form N-1A as amended from time to time, and the Adviser is willing
to render such services;

         NOW, THEREFORE, in consideration of mutual covenants herein contained,
the parties hereto agree as follows:

         1. DUTIES OF THE ADVISER. The Manager employs the Adviser to manage
the investment and reinvestment of such portion, if any, of the Portfolios'
assets as is designated by the Manager from time to time, and with respect to
such assets, to continuously review, supervise and administer the investment
program of the Portfolios, to determine in the Advisers discretion the
securities to be purchased or sold, to provide the Manager and the Trust with
records concerning the Adviser's activities which the Trust is required to
maintain, and to render regular reports to the Manager and to the Trust's
officers and Trustees
<PAGE>   2
concerning the Adviser's discharge of the foregoing responsibilities.  The
Adviser shall discharge the foregoing responsibilities subject to the Manager's
oversight and the control of the officers and the Trustees of the Trust and in
compliance with such policies as the Trustees may from time to time establish,
and in compliance with the objectives, policies, and limitations for each such
Portfolio set forth in the Trust's current registration statement as amended
from time to time and applicable laws and regulations.  The Adviser accepts
such employment and agrees to render the services for the compensation
specified herein and to provide at its own expense the office space,
furnishings and equipment and the personnel required by it to perform the
services on the terms and for the compensation provided herein.  The Manager
will instruct the Trust's Custodian(s) to hold and/or transfer the Portfolios'
assets in accordance with Proper Instructions received from the Adviser.  (For
this purpose the term "Proper Instructions" shall have the meaning(s) specified
in the applicable agreements(s) between the Trust and its Custodian(s).)  The
Adviser will not be responsible for the cost of securities or brokerage
commissions or any other Trust expenses except as specified in this Agreement.

         2.  PORTFOLIO TRANSACTIONS.  The Adviser is authorized to select the
brokers or dealers (including, to the extent permitted by law and applicable
Trust guidelines, the Adviser or any of its affiliates) that will execute the
purchases and sales of portfolio securities for the Portfolios and is directed
to use its best efforts to obtain the best net results with respect to brokers'
commissions and discounts as described in the Trust's current registration
statement as amended from time to time.  In selecting brokers or dealers, the
Adviser may give consideration to factors other than price, including, but not
limited to, research services and market information.  Any such services or
information which the Adviser receives in connection with activities for the
Trust may also be used for the benefit of other clients and customers of the
Adviser or any of its affiliates.  The Adviser will promptly communicate to the
Manager and to the officers and the Trustees of the Trust such information
relating to portfolio transactions as they may reasonably request.

         3.  COMPENSATION OF THE ADVISER.  For the services to be rendered by
the Adviser as provided in Sections 1 and 2 of this Agreement, the Manager
shall pay to the Adviser compensation at the rate specified in Schedule(s)
attached hereto and made a part of this Agreement.  Such compensation shall be
paid to the Adviser quarterly in arrears, and shall be calculated by applying
the annual percentage rate(s) as specified in the attached
<PAGE>   3
Schedule(s) to the average month-end assets of the specified portfolios during
the relevant quarter.  Solely for the purpose of calculating the applicable
annual percentage rates specified in the attached Schedule(s), there shall be
included such other assets as are specified in said Schedule(s).

         4.  OTHER SERVICES.  At the request of the Trust or the Manager, the
Adviser in its discretion may make available to the Trust office facilities,
equipment, personnel, and other services.  Such office facilities, equipment,
personnel and services shall be provided for or rendered by the Adviser and
billed to the Trust or the Manager at a price to be agreed upon by the Adviser
and the Trust or the Manager.

         5.  REPORTS.  The Manager (on behalf of the Trust) and the Adviser
agree to furnish to each other, if applicable, current prospectuses, proxy
statements, reports to shareholders, certified copies of their financial
statements, and such other information with regard to their affairs as each may
reasonably request.

         6.  STATUS OF ADVISER.  The services of the Adviser to the Trust are
not to be deemed exclusive, and the Adviser and its directors, officers,
employees and affiliates shall be free to render similar services to others so
long as its services to the Trust are not impaired thereby.  The Adviser shall
be deemed to be an independent contractor and shall, unless otherwise expressly
provided or authorized, have no authority to act for or represent the Manager
or the Trust in any way or otherwise be deemed an agent to the Manager or the
Trust.

         7.  CERTAIN RECORDS.  Any records required to be maintained and
preserved pursuant to the provisions of Rule 31a-1 and Rule 31a-2 promulgated
under the Investment Company Act of 1940 which are prepared or maintained by
the Adviser on behalf of the Manager or the Trust are the property of the
Manager or the Trust and will be surrendered promptly to the Manager or Trust
on request.

         8.  LIABILITY OF ADVISER.  No provision of this Agreement shall be
deemed to protect the Adviser against any liability to the Trust or its
shareholders to which it might otherwise be subject by reason of any willful
misfeasance, bad faith, or gross negligence in the performance of its duties or
the reckless disregard of its obligations under this Agreement.

         9.  PERMISSIBLE INTERESTS.  To the extent permitted by law, Trustees,
agents, and shareholders of the Trust are or may be
<PAGE>   4
interested in the Adviser (or any successor thereof) as directors, partners,
officers, or shareholders, or otherwise; directors, partners, officers, agents,
and shareholders of the Adviser are or may be interested in the Trust as
Trustees, shareholders or otherwise; and the Adviser (or any successor thereof)
is or may be interested in the Trust as a shareholder or otherwise; provided
that all such interests shall be fully disclosed between the parties on an
ongoing basis and in the Trust's registration statement as required by law.

         10. DURATION AND TERMINATION.  This Agreement, unless sooner
terminated as provided herein, shall continue for two years after its initial
approval as to each Portfolio and thereafter for periods of one year for so
long as such continuance thereafter is specifically approved at least annually
(a) by the vote of a majority of those Trustees of the Trust who are not
parties to this Agreement or interested persons of any such party, cast in
person  at a meeting called for the purpose of voting on such approval, and (b)
by the Trustees of the Trust or by vote of a majority of the outstanding voting
securities of each Portfolio; provided, however, that if the shareholders of
any Portfolio fail to approve the Agreement as provided herein, the Adviser may
continue to serve hereunder in the manner and to the extent permitted by the
Investment Company Act of 1940 and rules thereunder.  The foregoing requirement
that continuance of this Agreement be "specifically approved at least annually"
shall be construed in a manner consistent with the Investment Company Act of
1940 and the rules and regulations thereunder.  This Agreement may be
terminated as to any Portfolio at any time, without the payment of any penalty,
by the Manager, by vote of a majority of the Trustees of the Trust or by vote
of a majority of the outstanding voting securities of the Portfolio on not less
than 30 days nor more than 60 days written notice to the Adviser, or by the
Adviser at any time without the payment of any penalty, on 60 days written
notice to the Trust.  This Agreement will automatically and immediately
terminate in the event of its assignment.  Any notice under this Agreement
shall be given in writing, addressed and delivered, or mailed postpaid, to the
other party at the primary office of such party, unless such party has
previously designated another address.

         As used in this Section 10, the terms "assignment", "interested
persons", and a "vote of a majority of the outstanding voting securities" shall
have the respective meanings set forth in the Investment company Act of 1940
and the rules and regulations thereunder, subject to such exemptions as may be
granted by the Securities and Exchange Commission under said Act.
<PAGE>   5
         11.  SEVERABILITY.  If any provision of this Agreement shall be held
or made invalid by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby.

         A copy of the Declaration of Trust of the Trust is on file with the
Secretary of the Commonwealth of Massachusetts, and notice is hereby given that
this instrument is not binding upon any of the Trustees, officers, or
shareholders of the Trust individually.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the day and year first written above.


Barrow, Hanley, Mewhinney &
Strauss, Inc.                              AMR INVESTMENT SERVICES INC.
- - ----------------------------               


By /s/Bryant M. Hanley                     By  /s/ W.F. Quinn             
   -------------------------                   ---------------------------
                                               William F. Quinn

Its President                              Its President                 
    ------------------------                   ---------------------------
<PAGE>   6
                                   Schedule A
                                     to the
                       American AAdvantage Mileage Funds
                         Investment Advisory Agreement
                                    between
                         AMR Investment Services, Inc.
                                      and
                   Barrow, Hanley, Mewhinney & Strauss, Inc.


         AMR Investment Services, Inc. shall pay compensation to Barrow,
Hanley, Mewhinney & Strauss, Inc. pursuant to section 3 of the Investment
Advisory Agreement between said parties in accordance with the following annual
percentage rates:

         0.30% per annum on the first $200 million
         0.20% per annum on the next $300 million
         0.15% per annum on the next $500 million
         0.125% per annum on all excess over $1 billion


         In calculating the amount of assets under management solely for the
purposes of determining the applicable percentage rate, there should be
included all American Airlines Trust Funds under management by the Adviser.

         To the extent that a Portfolio invests all of its investable assets
(i.e., securities and cash) in another investment company, however, no portion
of the advisory fee attributable to that Portfolio as specified above shall be
paid for the period that such Portfolio's assets are so invested.


DATED: November 1, 1995

<PAGE>   1
                                                              Exhibit 99.b.5.b.v

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                         INVESTMENT ADVISORY AGREEMENT


         AGREEMENT made this 1 day of November, 1995 by and between AMR
Investment Services, Inc., a Delaware Corporation, (the "Manager") and GSB
Investment Management, Inc. (the "Adviser");

         WHEREAS, American AAdvantage Mileage Funds (the "Trust"), a
Massachusetts Business Trust, is an open-end, diversified management investment
company registered under the Investment Company Act of 1940, as amended,
consisting of several series (portfolios) of shares, each having its own
investment policies; and

         WHEREAS, the Trust has retained the Manager to provide the Trust with
business and asset management services, subject to the control of the Board of
Trustees;

         WHEREAS, the Trust's agreement with the Manager permits the Manager to
delegate to other parties certain of its asset management responsibilities; and

         WHEREAS, the Manager desires to retain the Adviser to render
investment management services to the Trust with respect to certain of its
investment portfolios and such other investment portfolios as the Trust and the
Adviser may agree upon and so specify in the Schedule(s) attached hereto
(collectively the "Portfolios") and as described in the Trust's registration
statement on Form N-1A as amended from time to time, and the Adviser is willing
to render such services;

         NOW, THEREFORE, in consideration of mutual covenants herein contained,
the parties hereto agree as follows:

         1. DUTIES OF THE ADVISER. The Manager employs the Adviser to manage
the investment and reinvestment of such portion, if any, of the Portfolios'
assets as is designated by the Manager from time to time, and with respect to
such assets, to continuously review, supervise and administer the investment
program of the Portfolios, to determine in the Advisers discretion the
securities to be purchased or sold, to provide the Manager and the Trust with
records concerning the Adviser's activities which the Trust is required to
maintain, and to render regular reports to the Manager and to the Trust's
officers and Trustees
<PAGE>   2
concerning the Adviser's discharge of the foregoing responsibilities.  The
Adviser shall discharge the foregoing responsibilities subject to the Manager's
oversight and the control of the officers and the Trustees of the Trust and in
compliance with such policies as the Trustees may from time to time establish,
and in compliance with the objectives, policies, and limitations for each such
Portfolio set forth in the Trust's current registration statement as amended
from time to time and applicable laws and regulations.  The Adviser accepts
such employment and agrees to render the services for the compensation
specified herein and to provide at its own expense the office space,
furnishings and equipment and the personnel required by it to perform the
services on the terms and for the compensation provided herein.  The Manager
will instruct the Trust's Custodian(s) to hold and/or transfer the Portfolios'
assets in accordance with Proper Instructions received from the Adviser.  (For
this purpose the term "Proper Instructions" shall have the meaning(s) specified
in the applicable agreements(s) between the Trust and its Custodian(s).)  The
Adviser will not be responsible for the cost of securities or brokerage
commissions or any other Trust expenses except as specified in this Agreement.

         2.  PORTFOLIO TRANSACTIONS.  The Adviser is authorized to select the
brokers or dealers (including, to the extent permitted by law and applicable
Trust guidelines, the Adviser or any of its affiliates) that will execute the
purchases and sales of portfolio securities for the Portfolios and is directed
to use its best efforts to obtain the best net results with respect to brokers'
commissions and discounts as described in the Trust's current registration
statement as amended from time to time.  In selecting brokers or dealers, the
Adviser may give consideration to factors other than price, including, but not
limited to, research services and market information.  Any such services or
information which the Adviser receives in connection with activities for the
Trust may also be used for the benefit of other clients and customers of the
Adviser or any of its affiliates.  The Adviser will promptly communicate to the
Manager and to the officers and the Trustees of the Trust such information
relating to portfolio transactions as they may reasonably request.

         3.  COMPENSATION OF THE ADVISER.  For the services to be rendered by
the Adviser as provided in Sections 1 and 2 of this Agreement, the Manager
shall pay to the Adviser compensation at the rate specified in Schedule(s)
attached hereto and made a part of this Agreement.  Such compensation shall be
paid to the Adviser quarterly in arrears, and shall be calculated by applying
the annual percentage rate(s) as specified in the attached
<PAGE>   3
Schedule(s) to the average month-end assets of the specified portfolios during
the relevant quarter.  Solely for the purpose of calculating the applicable
annual percentage rates specified in the attached Schedule(s), there shall be
included such other assets as are specified in said Schedule(s).

         4.  OTHER SERVICES.  At the request of the Trust or the Manager, the
Adviser in its discretion may make available to the Trust office facilities,
equipment, personnel, and other services.  Such office facilities, equipment,
personnel and services shall be provided for or rendered by the Adviser and
billed to the Trust or the Manager at a price to be agreed upon by the Adviser
and the Trust or the Manager.

         5.  REPORTS.  The Manager (on behalf of the Trust) and the Adviser
agree to furnish to each other, if applicable, current prospectuses, proxy
statements, reports to shareholders, certified copies of their financial
statements, and such other information with regard to their affairs as each may
reasonably request.

         6.  STATUS OF ADVISER.  The services of the Adviser to the Trust are
not to be deemed exclusive, and the Adviser and its directors, officers,
employees and affiliates shall be free to render similar services to others so
long as its services to the Trust are not impaired thereby.  The Adviser shall
be deemed to be an independent contractor and shall, unless otherwise expressly
provided or authorized, have no authority to act for or represent the Manager
or the Trust in any way or otherwise be deemed an agent to the Manager or the
Trust.

         7.  CERTAIN RECORDS.  Any records required to be maintained and
preserved pursuant to the provisions of Rule 31a-1 and Rule 31a-2 promulgated
under the Investment Company Act of 1940 which are prepared or maintained by
the Adviser on behalf of the Manager or the Trust are the property of the
Manager or the Trust and will be surrendered promptly to the Manager or Trust
on request.

         8.  LIABILITY OF ADVISER.  No provision of this Agreement shall be
deemed to protect the Adviser against any liability to the Trust or its
shareholders to which it might otherwise be subject by reason of any willful
misfeasance, bad faith, or gross negligence in the performance of its duties or
the reckless disregard of its obligations under this Agreement.

         9.  PERMISSIBLE INTERESTS.  To the extent permitted by law, Trustees,
agents, and shareholders of the Trust are or may be
<PAGE>   4
interested in the Adviser (or any successor thereof) as directors, partners,
officers, or shareholders, or otherwise; directors, partners, officers, agents,
and shareholders of the Adviser are or may be interested in the Trust as
Trustees, shareholders or otherwise; and the Adviser (or any successor thereof)
is or may be interested in the Trust as a shareholder or otherwise; provided
that all such interests shall be fully disclosed between the parties on an
ongoing basis and in the Trust's registration statement as required by law.

         10. DURATION AND TERMINATION.  This Agreement, unless sooner
terminated as provided herein, shall continue for two years after its initial
approval as to each Portfolio and thereafter for periods of one year for so
long as such continuance thereafter is specifically approved at least annually
(a) by the vote of a majority of those Trustees of the Trust who are not
parties to this Agreement or interested persons of any such party, cast in
person  at a meeting called for the purpose of voting on such approval, and (b)
by the Trustees of the Trust or by vote of a majority of the outstanding voting
securities of each Portfolio; provided, however, that if the shareholders of
any Portfolio fail to approve the Agreement as provided herein, the Adviser may
continue to serve hereunder in the manner and to the extent permitted by the
Investment Company Act of 1940 and rules thereunder.  The foregoing requirement
that continuance of this Agreement be "specifically approved at least annually"
shall be construed in a manner consistent with the Investment Company Act of
1940 and the rules and regulations thereunder.  This Agreement may be
terminated as to any Portfolio at any time, without the payment of any penalty,
by the Manager, by vote of a majority of the Trustees of the Trust or by vote
of a majority of the outstanding voting securities of the Portfolio on not less
than 30 days nor more than 60 days written notice to the Adviser, or by the
Adviser at any time without the payment of any penalty, on 60 days written
notice to the Trust.  This Agreement will automatically and immediately
terminate in the event of its assignment.  Any notice under this Agreement
shall be given in writing, addressed and delivered, or mailed postpaid, to the
other party at the primary office of such party, unless such party has
previously designated another address.

         As used in this Section 10, the terms "assignment", "interested
persons", and a "vote of a majority of the outstanding voting securities" shall
have the respective meanings set forth in the Investment company Act of 1940
and the rules and regulations thereunder, subject to such exemptions as may be
granted by the Securities and Exchange Commission under said Act.
<PAGE>   5
         11.  SEVERABILITY.  If any provision of this Agreement shall be held
or made invalid by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby.

         A copy of the Declaration of Trust of the Trust is on file with the
Secretary of the Commonwealth of Massachusetts, and notice is hereby given that
this instrument is not binding upon any of the Trustees, officers, or
shareholders of the Trust individually.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the day and year first written above.


GSB Investment Management, Inc.                AMR INVESTMENT SERVICES INC.
- - -------------------------------                


By /s/Frank P. Ganucheau III                   By  /s/ W.F. Quinn             
   ----------------------------                    ---------------------------
                                                   William F. Quinn

Its President                                  Its President                 
    ---------------------------                    ---------------------------
<PAGE>   6
                                   Schedule A
                                     to the
                           American AAdvantage Funds
                         Investment Advisory Agreement
                                    between
                         AMR Investment Services, Inc.
                                      and
                        GSB Investment Management, Inc.


         AMR Investment Services, Inc. shall pay compensation to GSB Investment
Management, Inc. pursuant to section 3 of the Investment Advisory Agreement
between said parties in accordance with the following annual percentage rates:

         0.30% per annum on the first $100 million
         0.25% per annum on the next $100 million
         0.20% per annum on the next $100 million
         0.15% per annum on all excess over $300 million


         In calculating the amount of assets under management solely for the
purposes of determining the applicable percentage rate, there should be
included all American Airlines Trust Funds under management by the Adviser.

         To the extent that a Portfolio invests all of its investable assets
(i.e., securities and cash) in another investment company, however, no portion
of the advisory fee attributable to that Portfolio as specified above shall be
paid for the period that such Portfolio's assets are so invested.

DATED: November 1, 1995

<PAGE>   1
                                                                  EXHIBIT 99.b.6

                             DISTRIBUTION AGREEMENT

     This Distribution Agreement is made this 1st day of September, 1995, by
and among American AAdvantage Funds and American AAdvantage Mileage Funds, both
Massachusetts business trusts (the "Trusts"), Brokers Transaction Services,
Inc. ("BTS") or the "Distributor"), a Texas corporation, and AMR Investment
Services, Inc. ("AMR"), a Delaware corporation.

     WHEREAS, the Trusts are registered as open-end, diversified management
investment companies under the Investment Company Act of 1940, as amended (the
"1940 Act"), and have registered and intend to continue to register their
shares of beneficial interest (the "Shares") for sale to the public under the
Securities Act of 1933, as amended (the "1933 Act"), and various state
securities laws; and

     WHEREAS, the Trusts offer for public sale one or more distinct series of
shares of beneficial interest, each corresponding to a distinct portfolio
("Portfolio"); and

     WHEREAS, the Trusts wish to retain BTS as the Trust's Distributor in
connection with the offering and sale of the Shares of each current Portfolio
and such other Portfolios as agreed upon between the Trusts and BTS from time
to time and to furnish certain other services to the Trusts as specified in
this Agreement;

     WHEREAS, this Agreement has been approved by a vote of the Board of
Trustees of each Trust in conformity with Paragraph (b)(2) of Rule 12b-1 under
the 1940 Act;

     WHEREAS, AMR is the Manager of each Trust; and

     WHEREAS, BTS is willing to act as Distributor and to furnish such services
on the terms and conditions hereinafter set forth;

     NOW, THEREFORE, in consideration of the premises and mutual covenants
herein contained, it is agreed between the parties hereto as follows:

     1.   APPOINTMENT OF BTS.  The Trusts hereby appoints BTS as Distributor of
their Shares. As such, BTS agrees to act as agent for the Trusts and, subject
to applicable federal and state laws and the Declaration of Trust, By-Laws and
current Prospectus and Statement of Additional Information of each Trust, (a)
to solicit orders for the purchase of the Shares, subject to such terms and
conditions as each Trust may specify, (b) to hold itself available to receive
orders for the purchase and redemption of the Shares, and to accept such orders
on behalf of each Trust as of the time of receipt of such orders and promptly
transmit such orders as are accepted to the Trust and its transfer agents, and
(c) to make Shares available through the National Securities Clearing
Corporation's FundServ system. Orders shall be deemed effective at the time and
in the manner set forth in the Registration Statement. BTS shall offer the
Shares of each Portfolio on an agency or "best efforts" basis under which each
Trust shall only issue such Shares as are actually sold. The public offering
price of the Shares of each Portfolio shall be the net asset value per share
(as determined by each Trust) of the outstanding Shares of the Portfolio as set
forth in the Registration Statement. The Trusts reserve the right at any time
to withdraw all offerings of the Shares of any or all Portfolios by notice to
BTS.

     2.   TRUST OBLIGATIONS.  Each Trust shall keep BTS fully informed of its
affairs and shall make available to BTS copies of all information, financial
statements and other papers that BTS may reasonably request for use



                                     - 1 -
<PAGE>   2


in connection with the distribution shares, including, without limitation, 
such reasonable number of copies of the most current prospectus, statement of
additional information, and annual and interim reports of a Portfolio as BTS 
may request, and each Trust shall cooperate fully in the efforts of BTS to 
sell and arrange for the sale of the Shares.

     3.  SALES TO DEALERS.  BTS, with the consent of the Trusts or AMR, may
enter into agreements to sell shares to registered and qualified retail
dealers.

     4.  SALES MATERIALS.  BTS shall provide to investors and potential
investors only such information regarding the Trusts as is permitted by
applicable law. To the extent reasonably requested by AMR, BTS will file
proposed advertisements and sales literature with appropriate regulators and
consult with AMR regarding any comments provided by regulators with respect to
such materials.

     5.  COMPENSATION.  As compensation for providing services under this
agreement, AMR (and not the Trusts) shall pay to BTS the sum of (a) $50,000
annually, payable monthly in arrears, (b) the ongoing licensing fees and
incidental costs of those employees of AMR who are designated by AMR to become
registered representatives of BTS, (c) the compensation paid by BTS to such
registered representatives in accordance with compensation schedules,   as
agreed upon by BTS and AMR from time to time; (d) the reasonable fees
associated with listing and maintaining shares on the National Securities
Clearing Corporation's FundServ system, as agreed upon by BTS and AMR; and (e)
incidental expenses associated with printing and distributing advertising and
sales literature.

     6.  TRUST EXPENSES.  Each Trust agrees, at its own expense, to register
Shares with the Securities and Exchange Commission ("SEC"), state and other
regulatory bodies, and to prepare and file from time to time such registration
statements, amendments, reports and other documents as may be necessary to
offer and sell Shares.  Each Portfolio shall bear all expenses related to
preparing and typesetting Prospectuses, Statements of Additional Information
and other materials required by law and such other expenses, including printing
and mailing expenses, related to the Portfolio's communications with persons
who are shareholders of that Portfolio.  Except as specifically provided in
this Agreement, the Trusts and the Portfolios shall bear none of the expenses
of BTS in connection with its offer and sale of the Shares.

     7.  INDEMNIFICATION BY THE TRUSTS AND AMR.  The Trusts and AMR will
indemnify, defend and hold harmless BTS, its officers and directors, and any
person who controls BTS within the meaning of Section 15 of the 1933 Act
(collectively, "BTS Indemnified Persons") from and against any and all claims,
demands, liabilities and expenses (including the reasonable cost of
investigating or defending such claims, demands or liabilities) that any BTS
Indemnified Person may incur under the 1933 Act, common law or otherwise
arising out of or based upon any (a) untrue statement of a material fact in the
Registration Statement, (b) omission to state a material fact in the
Registration Statement, or (c) failure by the Trusts or AMR to comply with the
terms of this Agreement, provided that this Agreement shall not protect any BTS
Indemnified Person from liability to which such person otherwise would be
subject by reason of willful misfeasance, bad faith, or gross negligence in the
performance of its duties, or by reason of its reckless disregard of its duties
under this Agreement.

     8.  INDEMNIFICATION BY BTS.  BTS will indemnify, defend and hold harmless
the Trusts and their Portfolios, AMR, their several officers, directors and
Trustees, and any person who controls the Trusts or AMR within the meaning of
Section 15 of the 1933 Act (collectively, "AMR Indemnified Persons") from and
against any and all claims, demands, liabilities and

                                     -2-

<PAGE>   3
expenses (including the reasonable cost of investigating or defending such
claims, demands or liabilities) that any AMR Indemnified Person may incur under
the 1933 Act, common law or otherwise arising out of or based upon any (a)
untrue statement of a material fact furnished by a BTS Indemnified Person for
use in the Registration Statement, (b) failure by such a person to state a
material fact therein as necessary to make the statements therein not
misleading, or (c) failure by BTS to comply with the terms of this Agreement or
applicable law, provided that this Agreement shall not protect any AMR
Indemnified Person from liability to which such person otherwise would be
subject by reason of willful misfeasance, bad faith, or gross negligence in the
performance of its duties, or by reason of its reckless disregard of its
obligations and duties under this Agreement.

     9.  Share Certificates.  The Trusts shall not issue certificates
representing Shares unless requested to do so by a shareholder.  If such
request is transmitted through BTS, the Trusts will cause certificates
evidencing the Shares owned to be issued in such names and denominations as BTS
shall from time to time direct.

    10.  Status of BTS.  BTS is an independent contractor and shall be agent
for the Trusts only with respect to the sale and redemption of Shares.

    11.  Non-Exclusive Services.  The services of BTS to the Trusts under this
Agreement are not to be deemed exclusive, and BTS shall be free to render
similar services or other services to others so long as its services hereunder
are not impaired thereby.

    12.  Reports by BTS.  BTS shall prepare reports for the Trustees regarding
its activities under this Agreement as from time to time shall be reasonably
requested by the Trustees.

    13.  Definitions.  As used herein: the term "Registration Statement" shall
mean the registration statement filed by the Trust with the SEC and effective
under the 1933 Act, as such Registration Statement is amended or supplemented
from time to time; the terms "Prospectus" and "Statement of Additional
Information" shall mean the current form of prospectus(es) and statement(s) of
additional information filed by the Trusts as part of the Registration
Statement; the term "net asset value" shall have the meaning ascribed to it in
each Trust's Declaration of Trust; the term "Trustees" shall refer to the Board
of Trustees of each Trust; and the terms "affiliated person," "assignment,"
"interested person," and "majority of the outstanding voting securities" shall
have the meanings given to them by Section 2(a) of the 1940 Act, subject to
such exemptions as may be granted by the SEC by any rule, regulation or order.

    14.  Effectiveness of Agreement. This Agreement shall become effective
upon the date hereinabove written, provided that, with respect to a Portfolio,
this Agreement shall not take effect unless such action has first been approved
by vote of a majority of the Trustees of each Trust and by vote of a majority
of those Trustees who are not interested persons of the Trusts or BTS (all such
Trustees collectively being referred to herein as the "Independent Trustees"),
cast in person at a meeting called for the purpose of voting on such action.

    15.  Termination of Agreement. Unless sooner terminated as provided
herein, this Agreement shall continue in effect for one year from the above
written date.  Thereafter, if not terminated, this Agreement shall continue
automatically for successive periods of twelve months each, provided that such
continuance is approved at least annually (a) by a vote of a majority of the
Independent Trustees, cast in person at a meeting called for the purpose of
voting on such approval, and (b) by the Board of Trustees of each Trust or,
with respect to any given series, by vote of a majority of the outstanding
voting securities of such Portfolio.  Notwithstanding the foregoing, with

                                     -3-
<PAGE>   4
respect to any Portfolio, this Agreement may be terminated at any time, without
the payment of any penalty, by vote of the Board of Trustees of a Trust, by
vote of a majority of the Independent Trustees of a Trust or by vote of a
majority of the outstanding voting securities of such Portfolio on 180 days'
written notice to BTS or by BTS at any time, without the payment of any
penalty, on 180 days' written notice to the Trust or such Portfolio.
Termination of this Agreement with respect to any given Portfolio shall not
affect the continued validity of this Agreement or the performance thereunder
with respect to any other Portfolio. This Agreement automatically will
terminate in the event of its assignment.

    16.  Amendments.  No provision of this Agreement may be changed, waived,
discharged or terminated orally, but only by an instrument in writing signed by
the party against which enforcement of the change, waiver, discharge or
termination is sought.

    17.  Governing Law.  This Agreement shall be construed in accordance with
the laws of the State of Texas, without giving effect to the conflicts of laws
principles thereof, and the 1940 Act. To the extent that the applicable laws
of the State of Texas conflict with the applicable provisions of the 1940 Act,
however, the 1940 Act shall control.

    18.  Representations.  BTS represents and warrants that it (a) is duly
authorized to enter into this Agreement, (b) is duly registered and licensed as
a broker-dealer and in good standing with the National Association of
Securities Dealers, Inc. and all applicable state securities regulators and
that it is duly authorized and qualified to perform the services set forth in
this Agreement, and (c) promptly will notify AMR and each Trust if BTS or any
of its affiliated persons become subject to a legal proceeding which, if
adversely decided, could impair BTS's ability to satisfy its obligations under
this Agreement.

    19.  Notice.  Any notice required or permitted to be given by either party
to the other shall be deemed sufficient upon receipt in writing at the other
party's principal offices.

    20.  Miscellaneous. The captions in this Agreement are included for
convenience of reference only and in no way define or delimit any of the
provisions hereof or otherwise affect their construction or effect.

    21.  Massachusetts Business Trust.  The Trusts are Massachusetts business
trusts.  A copy of each Trust's Declaration of Trust of the Trust is on file
with the Secretary of the Commonwealth of Massachusetts. This Agreement is
not binding upon any of the Trustees, officers or shareholders of the Trusts
individually, and no such person shall be individually liable with respect to
any action or inaction resulting from this Agreement.

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their officers thereunto duly authorized.

Attest:                                      AMERICAN AADVANTAGE FUNDS

By:  /s/ Barry Y. Greeneberg                 By: /s/ William F. Quinn
   -----------------------------                -----------------------------
                                                 Title: President
                                                        ---------------------

Attest:                                        AMERICAN AADVANTAGE MILEAGE FUNDS


By:  /s/ Barry Y. Greeneberg                 By: /s/ William F. Quinn
   -----------------------------                ----------------------------- 


                                      -4-
<PAGE>   5
                                              Title: President
                                                    ----------------------------



Attest:                                       BROKERS TRANSACTION SERVICES, INC.


By: /s/ Dana Prentice                      By: /s/ Sue H. Peden              
   ----------------------                     ----------------------------------
                                              Title: Sr. Vice President
                                                     ---------------------------

Attest:                                       AMR INVESTMENT SERVICES, INC.


By: /s/ Barry Y. Greeneberg                By: /s/ William F. Quinn
   -------------------------                  ----------------------------------
                                              Title: President
                                                     ---------------------------




                                    - 5 -

<PAGE>   1
                                                                  Exhibit 99.b.8

                               CUSTODIAN CONTRACT

                                    Between

                       AMERICAN AADVANTAGE MILEAGE FUNDS

                                      and

                           NATIONSBANK OF TEXAS, N.A.





<PAGE>   2


                               TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                       Page
                                                                                                       ----
<S>          <C>                                                                                      <C>
1.         Employment of Custodian and Property to be Held by It                                          1

2.         Duties of the Custodian with Respect to Property of the Fund Held by the Custodian
                                                                                                          2

           2.1     Holding Securities                                                                     2
           2.2     Delivery of Securities                                                                 2
           2.3     Registration of Securities                                                             5
           2.4     Bank Accounts                                                                          5
           2.5     Investment and Availability of Federal Funds                                           6
           2.6     Collection of Income                                                                   6
           2.7     Payment of Fund Monies                                                                 7
           2.8     Liability for Payment in Advance of Receipt of Securities Purchased                    9
           2.9     Appointment of Agents                                                                  9
           2.10    Deposit of Securities in Security System                                               9
           2.11    Segregated Account                                                                    11
           2.12    Ownership Certificates for Tax Purposes                                               12
           2.13    Proxies                                                                               12
           2.14    Communications Relating to Fund Portfolio Securities                                  13
           2.15    Reports to Fund by Independent Public Accountants                                     13

3.         Proper Instructions                                                                           14

4.         Actions Permitted Without Express Authority                                                   14

5.         Evidence of Authority                                                                         15

6.         Duties of Custodian with Respect to the Books of Account and Calculation of Net
           Asset Value and Net Income                                                                    15

7.         Records                                                                                       15

8.         Opinion of Fund's Independent Accountant                                                      16

9.         Compensation of Custodian                                                                     16

10.        Responsibility of Custodian                                                                   16

11.        Effective Period, Termination and Amendment                                                   17

12.        Successor Custodian                                                                           18

13.        Interpretive and Additional Provisions                                                        19

14.        Texas Law to Apply                                                                            20

15.        Prior Contracts                                                                               21
</TABLE>


<PAGE>   3


                               CUSTODIAN CONTRACT


   
AGREEMENT made as of this 1st day of November, 1995, between the American
AAdvantage Mileage Funds, a Massachusetts business trust, having its principal
place of business at 4333 Amon Carter Boulevard, 76155, hereinafter called the
"Trust", and NationsBank of Texas, N.A., a national banking association, having
its principal place of business at 1401 Elm Street Street, Dallas, Texas 75201,
hereinafter called the "Custodian,"
    

WITNESSETH: That in consideration of the mutual covenants and agreements
hereinafter contained, the parties hereto agree as follows:

1.       Employment of Custodian and Property to be Held by It.
The Trust hereby employs the Custodian as the custodian of the assets of each
of the Trust's series of shares of beneficial interest. The term "Fund" as used
hereinafter shall mean each and all such series in existence as of the date
hereof and, if mutually agreed by the Trust and the Custodian at such time,
each such series hereafter designated by the Trust.

The Fund agrees to deliver to the Custodian all securities and cash owned by
it, and all payments of income, payments of principal or capital distributions
received by it with respect to all securities owned by the Fund from time to
time, and the cash consideration received by it for such shares of beneficial
interest ("Shares") of the Fund as may be issued or sold from time to time. The
Custodian shall not be responsible for any property of the Fund held or
received by the Fund and not delivered to the Custodian.

Upon receipt of "Proper Instructions" (within the meaning of Article 3), the
Custodian shall from time to time employ one or more sub-custodians located in
the United States, provided that the Custodian shall have no more or less
responsibility or liability to the Fund on account of any actions or omissions
of any sub-custodian so employed than any such sub-custodian has to the
Custodian.

2. Duties of the Custodian with Respect to Property of the Fund Held By the
Custodian. 2.1 Holding Securities. The Custodian shall hold and physically
segregate for the account of the Fund all non-cash property, to be held by it
in the United States, including all domestic securities owned by the Fund,
other than securities which are maintained pursuant to Section 2.10 in a
clearing agency which acts as a securities depository or in a book-entry system
authorized by the U. S. Department of the Treasury, collectively referred to
herein as "Securities System."

2.2 Delivery of Securities. The Custodian shall release and deliver domestic
securities owned by the Fund held by the Custodian or in a Securities System
account of the Custodian only upon receipt of Proper Instructions, which may be
continuing 



<PAGE>   4

instructions when deemed appropriate by the parties, and only in the
following cases:

         1)       Upon sale of such securities for the account of the Fund and
                  receipt of payment therefor; 

         2)       Upon the receipt of payment in connection with any repurchase 
                  agreement related to such
                  securities entered into by the Fund;

         3)       In the case of a sale effected through a Securities System, in
                  accordance with the provisions of Section 2.10 hereof;

         4)       To the depository agent in connection with tender or other
                  similar offers for portfolio securities of the Fund;

         5)       To the issuer thereof or its agent when such securities are
                  called, redeemed, retired or otherwise become payable;
                  provided that, in any such case, the cash or other
                  consideration is to be delivered to the Custodian;

         6)       To the issuer thereof, or its agent, for transfer into the
                  name of the Fund or into the name of any nominee or nominees
                  of the Custodian or into the name or nominee name of any
                  agent appointed Pursuant to Section 2.9 or into the name or
                  nominee name of any sub-custodian appointed pursuant to
                  Article 1; or for exchange for a different number of bonds,
                  certificates or other evidence representing the same
                  aggregate face amount or number of units; provided that, in
                  any such case, the new securities are to be delivered to the
                  Custodian;

         7)       To the broker selling the same or its clearing agent, for
                  examination in accordance with the "street delivery" custom;

         8)       For exchange or conversion pursuant to any plan of merger,
                  consolidation, recapitalization, reorganization or
                  readjustment of the securities of the issuer of such
                  securities, or pursuant to provisions for conversion
                  contained in such securities, or pursuant to any deposit
                  agreement, provided that, in any such case, the new
                  securities and cash, if any, are to be delivered to the
                  Custodian;

         9)       In the case of warrants, rights or similar securities, the
                  surrender thereof in the exercise of such warrants, rights or
                  similar securities or the surrender of interim receipts or
                  temporary securities for definitive securities; provided
                  that, in any such case, the new securities and cash, if any,
                  are to be delivered to the Custodian;

         10)      For delivery in connection with any loans of securities made
                  by the Fund, but only against receipt of adequate collateral
                  as agreed upon from time to time by the Custodian and the
                  Fund, which may be in the form of cash or obligations issued
                  by the United States government, its agencies or
                  instrumentalities, except that in connection with any loans
                  for which collateral is to be credited to the Custodian's
                  account in the book-entry system authorized by the U. S.
                  Department of the Treasury, the Custodian will not be held
                  liable or 


<PAGE>   5


                  responsible for the delivery of securities owned by the Fund
                  prior to the receipt of such collateral;

         11)      For delivery as security in connection with any borrowings by
                  the Fund requiring a pledge of assets by the Fund, but only
                  against receipt of amounts borrowed;

         12)      For delivery in accordance with the provisions of any
                  agreement among the Fund, the Custodian and a broker-dealer
                  registered under the Securities Exchange Act of 1934 (the
                  "Exchange Act") and a member of The National Association of
                  Securities Dealers, Inc. ("NASD"), relating to compliance
                  with the rules of The Options Clearing Corporation and of any
                  registered national securities exchange, or of any similar
                  organizations, regarding escrow or other arrangements in
                  connection with transactions by the Fund;

         13)      For delivery in accordance with the provisions of any
                  agreement among the Fund, the Custodian, and a Futures
                  Commission Merchant registered under the Commodity Exchange
                  Act, relating to compliance with the rules of the Commodity
                  Futures Trading Commission and/or any Contract Market, or any
                  similar organization or organizations, regarding account
                  deposits in connection with transactions by the Fund;

         14)      Upon receipt of instructions from the transfer agent
                  ("Transfer Agent") for the Fund, for delivery to such
                  Transfer Agent or to the holders of shares in connection with
                  distributions in kind, as may be described from time to time
                  in the Fund's currently effective prospectus and statement of
                  additional information I "prospectus"), in satisfaction of
                  requests by holders of Shares for repurchase or redemption;
                  and

         15)      For any other proper corporate purpose, but only upon receipt
                  of, in addition to Proper Instructions, a properly executed
                  copy of a resolution of the Trustees of the Trust, specifying
                  the securities to be delivered, setting forth the purpose for
                  which such delivery is to be made, declaring such purposes to
                  be proper Fund purposes, and naming the person or persons to
                  whom delivery of such securities shall be made.

2.3 Registration of Securities. Domestic securities held by the Custodian
(other than bearer securities) shall be registered in the name of the Fund or
in the name of any nominee of the Fund or of any nominee of the Custodian (such
nominee may be used in common with other Funds and other registered investment
companies having the same investment adviser as the Fund), or in the name or
nominee name of any agent appointed pursuant to Section 2.9 or in the name or
nominee name of any sub-custodian appointed pursuant to Article 1. All
securities accepted by the Custodian on behalf of the Fund under the terms of
this Contract shall be in "street name" or other good delivery form.

2.4 Bank Accounts. The Custodian shall open and maintain a separate bank
account or accounts in the United States in the name of the Fund, subject only
to draft or order by the Custodian 


<PAGE>   6



acting pursuant to the terms of this Contract, and shall hold in such account
or accounts, subject to the provisions hereof, all cash received by it from or
for the account of the Fund, other than cash maintained by the Fund in a bank
account established and used in accordance with Rule 17f-3 under the Investment
Company Act of 1940. Funds held by the Custodian for the Fund may be deposited
by it to its credit as Custodian in the Banking Department of the Custodian or
in such other banks or trust companies as it may in its discretion deem
necessary or desirable; provided, however, that every such bank or trust
company shall be qualified to act as a custodian under the Investment Company
Act of l940 and that each such bank or trust company and the funds to be
deposited with each such bank or trust company shall be approved by the
Trustees of the Trust. Such funds shall be deposited by the Custodian in its
capacity as Custodian and shall be withdrawable by the Custodian only in that
capacity.

2.5   Investment and Availability of Federal Funds.  Upon mutual agreement
between the Fund and the Custodian the Custodian shall, upon the receipt of 
Proper Instructions,

           1)    invest in such instruments as may be set forth in such
                 instructions on the same day as received all federal funds
                 received after a time agreed upon between the Custodian and
                 the Fund; and

           2)    make federal funds available to the Fund as of specified times
                 agreed upon from time to time by the Fund and the Custodian in
                 the amount of checks received in payment for Shares of the
                 Fund which are deposited into the Fund's account.

2.6 Collection of Income. The Custodian shall collect on a timely basis all
income and other payments with respect to United States registered securities
held hereunder to which the Fund shall be entitled either by law or pursuant to
custom in the securities business, and shall collect on a timely basis all
income and other payments with respect to United States bearer securities if,
on the date of payment by the issuer, such securities are held by the Custodian
or agent thereof and shall credit such income, as collected, to the Fund's
custodian account. Without limiting the generality of the foregoing, the
Custodian shall detach and present for payment all coupons and other income
items requiring presentation as and when they become due and shall collect
interest when due on securities held hereunder. Income due the Fund on United
States securities loaned pursuant to the provisions of Section 2.2 (10) shall
be the responsibility of the Fund. The Custodian will have no duty or
responsibility in connection therewith, other than to provide the Fund with
such information or data as may be necessary to assist the Fund in arranging
for the timely delivery to the Custodian of the income to which the Fund is
properly entitled.

2.7 Payment of Fund Moneys. Upon receipt of Proper Instructions which may be
continuing instructions when deemed appropriate by the parties, the Custodian
shall pay out moneys of the Fund in the following cases only:

<PAGE>   7



          l)      Upon the purchase of domestic securities, futures contracts
                  or options on futures contracts for the account of the Fund
                  but only (a) against the delivery of such securities, or
                  evidence of title to futures contracts or options on futures
                  contracts, to the Custodian (or any bank, banking firm or
                  trust company doing business in the United States or abroad
                  which is qualified under the Investment Company Act of 1940,
                  as amended, to act as a custodian and has been designated by
                  the Custodian as its agent for this purpose) registered in
                  the name of the Fund or in the name of a nominee of the
                  Custodian referred to in Section 2.3 hereof or in proper form
                  for transfer; (b) in the case of a purchase effected through
                  a Securities System, in accordance with the conditions set
                  forth in Section 2.10 hereof or (c) in the case of repurchase
                  agreements entered into between the Fund and the Custodian,
                  or another bank, or a broker dealer which is a member of
                  NASD, (i) against delivery of the securities either in
                  certificate form or through an entry crediting the
                  Custodian's account at the Federal Reserve Bank with such
                  securities (notwithstanding that: the written confirmation of
                  such repurchase transaction will be received subsequently) or
                  (ii) against delivery of the receipt evidencing purchase by
                  the Fund of securities owned by the Custodian along with
                  written evidence of the agreement by the Custodian to
                  repurchase such securities from the Fund;

          2)      In connection with conversion, exchange or surrender of
                  securities owned by the Fund as set forth in Section 2.2
                  hereof;

          3)      For the redemption or repurchase of Shares issued by the Fund
                  as set forth in Article 4 hereof;

          4)      For the payment of any expense or liability incurred by the
                  Fund, including but not limited to the following payments for
                  the account of the Fund: interest, taxes, management,
                  accounting, transfer agent and legal fees, and operating
                  expenses of the Fund whether or not such expenses are to be
                  in whole or part capitalized or treated as deferred expenses;

          5)      For the payment of any dividends declared pursuant to the
                  governing documents of the Fund;

          6)      For payment of the amount of dividends received in respect of
                  securities sold short;

          7)      For any other proper purpose, but only upon receipt of, in
                  addition to Proper Instructions, a properly executed copy of
                  a resolution of the Trustees of the Trust, specifying the
                  amount of such payment, setting forth the purpose for which
                  such payment is to be made, declaring such purpose to be a
                  proper purpose, and naming the person or persons to whom such
                  payment is to be made.

2.8 Liability for Payment in Advance of Receipt of Securities Purchased. In any
and every case where payment for purchase of domestic securities for the
account of the Fund is made by the 



<PAGE>   8
Custodian in advance of receipt of the securities purchased in the absence of
specific written instructions from the Fund to so pay in advance, the Custodian
shall be absolutely liable to the Fund for such securities to the same extent
as if the securities had been received by the Custodian.

2.9 Appointment of Agents. The Custodian may at any time or times in its
discretion appoint (and may at any time remove) any other bank or trust company
which is itself qualified under the Investment Company Act of 1940, as amended,
to act as a custodian, as its agent to carry out such of the provisions of this
Article 2 as the Custodian may from time to time direct; provided, however,
that the appointment of any agent shall not relieve the Custodian of its
responsibilities or liabilities hereunder.

2.10 Deposit of Securities in Securities Systems. The Custodian may deposit
and/or maintain domestic securities owned by the Fund in a clearing agency
registered with the Securities and Exchange Commission under Section 17A of the
Securities Exchange Act of 1934, which acts as a securities depository, or in
the book-entry system authorized by the U. S. Department of the Treasury and
certain federal agencies, collectively referred to herein as "Securities
System" in accordance with applicable Federal Reserve Board and Securities and
Exchange Commission rules and regulations, if any, and subject to the following
provisions:

         1)       The Custodian may keep domestic securities of the Fund in a
                  Securities System provided that such securities are
                  represented in an account ("Account") of the Custodian in the
                  Securities System which shall not include any assets of the
                  Custodian other than assets held as a fiduciary custodian or
                  otherwise for customers;

         2)       The records of the Custodian with respect to domestic
                  securities of the Fund which are maintained in a Securities
                  System shall identify by book-entry those securities
                  belonging to the Fund;

         3)       The Custodian shall pay for domestic securities purchased for
                  the account of the Fund upon (i) receipt of advice from the
                  Securities System that such securities have been transferred
                  to the Account, and (ii) the making of an entry on the
                  records of the Custodian to reflect such payment and transfer
                  for the account of the Fund. The Custodian shall transfer
                  domestic securities sold for the account of the Fund upon (i)
                  receipt of advice from the Securities System that payment for
                  such securities has been transferred to the Account, and (ii)
                  the making of an entry on the records of the Custodian to
                  reflect such transfer and payment for the account of the
                  Fund. Copies of all advises from the Securities System of
                  transfers of domestic securities for the account of the Fund
                  shall identify the Fund, be maintained for the Fund by the
                  Custodian and be provided to the Fund at its request. Upon
                  request, the Custodian shall furnish the Fund 


<PAGE>   9
                  confirmation of each transfer to or from the account of the
                  Fund in the form of a written advice or notice and shall 
                  furnish to the Fund copies of daily transaction sheets 
                  reflecting each day's transactions in the Securities System
                  for the account of the Fund.

          (4)     The Custodian shall provide the Fund with any report obtained
                  by the Custodian on the Securities System's accounting
                  system, internal accounting control and procedures for
                  safeguarding domestic securities deposited in the Securities
                  System;

          5)      The Custodian shall have received the initial or annual
                  certificate, as the case may be, required by Article 11
                  hereof;

          6)      Anything to the contrary in this Contract notwithstanding,
                  the Custodian shall be liable to the Fund for any loss or
                  damage to the Fund resulting from use of the Securities
                  System by reason of any negligence, misfeasance or misconduct
                  of the Custodian or any of its agents or of any of its or
                  their employees or from failure of the Custodian or any such
                  agent to enforce effectively such rights as it may have
                  against the Securities System; at the election of the Fund,
                  it shall be entitled to be subrogated to the rights of the
                  Custodian with respect to any claim against the Securities
                  System or any other person which the Custodian may have as a
                  consequence of any such loss or damage if and to the extent
                  that the Fund has not been made whole for any such loss or
                  damage.

2.11 Segregated Account. The Custodian shall upon receipt of Proper
Instructions establish and maintain a segregated account or accounts for and on
behalf of the Fund, into which account or accounts may be transferred cash
and/or securities, including securities maintained in an account by the
Custodian pursuant to Section 2.10 hereof, (i) in accordance with the
provisions of any agreement among the Fund, the Custodian and a broker-dealer
registered under the Exchange Act and a member of the NASD (or any futures
commission merchant registered under the Commodity Exchange Act), relating to
compliance with the rules of The Options Clearing Corporation and of any
registered national securities exchange (or the Commodity Futures Trading
Commission or any registered contract market), or of any similar organization
or organizations, regarding escrow or other arrangements in connection with
transactions by the Fund, (ii) for purposes of segregating cash or government
securities in connection with options purchased, sold or written by the Fund or
commodity futures contracts or options thereon purchased or sold by the Fund,
(iii) for the purposes of compliance by the Fund with the procedures required
by Investment Company Act Release No. 10666, or any subsequent release or
releases of the Securities and Exchange Commission relating to the maintenance
of segregated accounts by registered investment companies and (iv) for other
proper corporate purposes, but only, in the case of clause (iv), upon receipt
of, in addition to Proper Instructions, a properly executed copy of a
resolution of the Trustees of the Trust, setting forth the purpose or purposes
of such segregated 


<PAGE>   10




account and declaring such purposes to be proper corporate purposes.

2.12 Ownership Certificates for Tax Purposes. The Custodian shall execute
ownership and other certificates and affidavits for all federal and state tax
purposes in connection with receipt of income or other payments with respect to
domestic securities of the Fund held by it and in connection with transfers of
such securities.

2.13 Proxies. The Custodian shall, with respect to the domestic securities held
hereunder, cause to be promptly executed by the registered holder of such
securities, if the securities are registered otherwise than in the name of the
Fund or a nominee of the Fund, all proxies, without indication of the manner in
which such proxies are to be voted, and shall Promptly deliver to the Fund such
proxies, all proxy soliciting materials and all notices relating to such
securities.

2.14 Communications Relating to Fund Portfolio Securities. The Custodian shall
transmit promptly to the Fund all written information (including, without
limitation, pendency of calls and maturities of domestic securities and
expirations of rights in connection therewith and notices of exercise of call
and put options written by the Fund and the maturity of futures contracts
purchased or sold by the Fund) received by the Custodian from issuers of the
domestic securities being held for the Fund. With respect to tender or exchange
offers, the Custodian shall transmit promptly to the Fund all written
information received by the Custodian from issuers of the domestic securities
whose tender or exchange is sought and from the party (or his agents making the
tender or exchange offer. If the Fund desires to take action with respect to
any tender offer, exchange offer or any other similar transaction, the Fund
shall notify the Custodian at least three business days prior to the date on
which the Custodian is to take such action.

2.15 Reports to Fund by Independent Public Accountants. Custodian shall provide
the Fund, at such times as the Fund may reasonably require, with reports by
independent public accountants on the accounting system, internal accounting
control and procedures for safeguarding securities, futures contracts and
options on futures contracts, including domestic securities deposited and/or
maintained in a Securities System, relating to the services provided by the
Custodian under this Contract; such reports, which shall be of sufficient scope
and in sufficient detail, as may reasonably be required by the Fund, to provide
reasonable assurance that any material inadequacies would be disclosed by such
examination, and, if there are no such inadequacies, shall so state.

3.       Proper Instructions
Proper Instructions as used herein means a writing signed or initialed by one
or more person or persons as the Trustees of the Trust shall have from time to
time authorized. Each such writing shall set forth the specific transaction or
type of transaction 


<PAGE>   11



involved, including a specific statement of the purpose for which such action
is requested. Oral instructions will be considered Proper Instructions if the
Custodian reasonably believes them to have been given by a person authorized to
give such instructions with respect to the transaction involved. The Fund shall
cause all oral instructions to be confirmed in writing. Upon receipt of a
certificate of the Trustees of the Trust as to the authorization by the Trust's
Trustees accompanied by a detailed description of procedures approved by the
Trust's Trustees, Proper Instructions may include communications effected
directly between electro-mechanical or electronic devices provided that the
Trustees of the Trust and the Custodian are satisfied that such procedures
afford adequate safeguards for the Fund's assets.

4.       Actions Permitted without Express Authority

The Custodian may in its discretion, without express authority from the Fund:

         1)       make payments to itself or others for minor expenses of
                  handling securities or other similar items relating to its
                  duties under this Contract, provided that all such payments
                  shall be accounted for to the Fund;

         2)       surrender securities in temporary form for securities in 
                  definitive form;\

         3)       endorse for collection, in the name of the Fund, checks,
                  drafts and other negotiable instruments; and

         4)       in general, attend to all non-discretionary details in
                  connection with the sale, exchange, substitution, purchase,
                  transfer and other dealings with the securities and property
                  of the Fund except as otherwise directed by the Trustees of
                  the Fund.

5.       Evidence of Authority

The Custodian shall be protected in acting upon any instructions, notice,
request, consent, certificate or other instrument or paper believed by it to be
genuine and to have been properly executed by or on behalf of the Fund. The
Custodian may receive and accept a properly executed copy of a document
evidencing action taken by the Trustees of the Trust as conclusive evidence (a)
of the authority of any person to act in accordance with such action or (b) of
any determination or of any action by the Trustees pursuant to the governing
instrument of the Trust, and such action may be considered as in full force and
effect until receipt by the Custodian of written notice to the contrary.

6.       Duties of Custodian with Respect to the Books of Account and 
         Calculation of Net Asset Value and Net Income

The Custodian shall cooperate with and supply necessary information to the
entity or entities appointed by the Trustees of the Trust to keep the books of
account of the Fund and/or compute the net asset value per share of the
outstanding shares of the Fund or, if directed in writing to do so by the Fund,
shall itself keep such books of account and/or compute such net asset value per
share. If so directed, the Custodian shall also calculate daily the net income
of the Fund as described in the Fund's currently effective prospectus and shall
advise the Fund and the Transfer Agent daily of the total amounts of such net


<PAGE>   12



income and, if instructed in writing by an officer of the Trust to do so, shall
advise the Transfer Agent periodically of the division of such net income among
its various components. The calculations of the net asset value per share and
the daily income of the Fund shall be made at the time or times described from
time to time in the Fund's currently effective prospectus.

7.       Records

The Custodian shall create and maintain all records relating to its activities
and obligations under this Contract in such manner as will meet the obligations
of the Fund under the Investment Company Act of 1940, with particular attention
to Section 31 thereof and Rules 31a-1 and 31a-2 thereunder, applicable federal
and state tax laws and any other law or administrative rules or procedures
which may be applicable to the Fund. All such records shall be the property of
the Fund and shall at all times during the regular business hours of the
Custodian be open for inspection by duly authorized employees or agents of the
Fund and employees and agents of the Securities and Exchange Commission. The
Custodian shall, at the Fund's request, supply the Fund with a tabulation of
securities owned by the Fund and held by the Custodian and shall, when
requested to do so by the Fund and for such compensation as shall be agreed
upon between the Fund and the Custodian, include certificate numbers in such
tabulations.

8.       Opinion of Fund's Independent Accountant

The Custodian shall take all reasonable action, as the Fund may from time to
time request, to obtain from year to year favorable opinions from the Fund's
independent accountants with respect to its activities hereunder in connection
with the preparation of the Fund's Form N-lA, and Form N-SAR or other annual
reports to the Securities and Exchange Commission and with respect to any other
requirements of such Commission.

9.       Compensation of Custodian

The Custodian shall be entitled to reasonable compensation for its services and
expenses as Custodian, as agreed upon from time to time between the Fund and
the Custodian.

10.      Responsibility of Custodian

So long as and to the extent that it is in the exercise of reasonable care, the
Custodian shall not be responsible for the title, validity or genuineness of
any property or evidence of title thereto received by it or delivered by it
pursuant to this Contract and shall be held harmless in acting upon any notice,
request, consent, certificate or other instrument reasonably believed by it to
be genuine and to be signed by the proper party or parties . The Custodian
shall be held to the exercise of reasonable care in carrying out the provisions
of this Contract, but shall be kept indemnified by and shall be without
liability to the Fund for any action taken or omitted by it in good faith
without negligence. It shall be entitled to rely on and may act upon advice of
counsel (who may be counsel for the Fund) on all matters, and shall be without
liability for any action reasonably taken or omitted pursuant to such advice.




<PAGE>   13
If the Fund requires the Custodian to take any action with respect to
securities, which action involves the payment of money or which action may, in
the opinion of the Custodian, result in the Custodian or its nominee assigned
to the Fund being liable for the payment of money or incurring liability of
some other form, the Fund, as a prerequisite to requiring the Custodian to take
such action, shall provide indemnity to the Custodian in an amount and form
satisfactory to it.

If the Fund requires the Custodian to advance cash or securities for any
purpose or in the event that the Custodian or its nominee shall incur or be
assessed any taxes, charges, expenses, assessments, claims or liabilities in
connection with the performance of this Contract, except such as may arise from
its or its nominee's own negligent action, negligent failure to act or willful
misconduct, any property at any time held for the account of the Fund shall be
security therefor and should the Fund fail to repay the Custodian promptly, the
Custodian shall be entitled to utilize available cash and to dispose of the
Fund assets to the extent necessary to obtain reimbursement.

11.      Effective Period, Termination and Amendment

This Contract shall become effective as of its execution, shall continue in
full force and effect until terminated as hereinafter provided, may be amended
at any time by mutual agreement of the parties hereto and may be terminated by
either party by an instrument in writing delivered or mailed, postage prepaid
to the other party, such termination to take effect not sooner than thirty (30)
days after the date of such delivery or mailing; provided, however that the
Custodian shall not act under Section 2.10 hereof in the absence of receipt of
an initial certificate of the Trustees of the Trust that the Trustees of the
Trust have approved the initial use of a particular Securities System and the
receipt of an annual certificate of the Trustees of the Trust that the Trustees
have reviewed the use by the Fund of such Securities System, as required in
each case by Rule 17f-4 under the Investment Company Act of 1940, as amended;
provided further, however, that the Fund shall not amend or terminate this
Contract in contravention of any applicable federal or state regulations, or
any provision of the governing instrument of the Fund, and further provided,
that the Fund may at any time by action of the Trustees substitute another bank
or trust company for the Custodian by giving notice as described above to the
Custodian, or (ii) immediately terminate this Contract in the event of the
appointment of a conservator or receiver for the Custodian by the Comptroller
of the Currency or upon the happening of a like event at the direction of an
appropriate regulatory agency or court of competent jurisdiction.

Upon termination of the Contract, the Fund shall pay to the Custodian such
compensation as may be due as of the date of such termination and shall
likewise reimburse the Custodian for its costs, expenses and disbursements.



<PAGE>   14
12.      Successor Custodian

If a successor custodian shall be appointed by the Trustees of the Trust, the
Custodian shall, upon termination, deliver to such successor custodian at the
office of the Custodian, duly endorsed and in the form for transfer, all
securities then held by it hereunder and shall transfer to an account of the
successor custodian all of the Fund's securities held in a Securities System.

If no such successor custodian shall be appointed, the Custodian shall, in like
manner, upon receipt of a properly executed copy of a document evidencing
action taken by the Trustees of the Trust, deliver at the office of the
Custodian and transfer such securities, funds and other properties in
accordance with such action.

In the event that no written order designating a successor custodian or
properly executed copy of a document evidencing action taken by the Trustees of
the Trust shall have been delivered to the Custodian on or before the date when
such termination shall become effective, then the Custodian shall have the
right to deliver to a bank or trust company, which is a "bank" as defined in
the Investment Company Act of 1940, of its own selection, having an aggregate
capital, surplus, and undivided profits, as shown by its last published report,
of not less than $25,000,000, all securities, funds and other properties held
by the Custodian and all instruments held by the Custodian relative thereto and
all other property held by it under this Contract and to transfer to an account
of such successor custodian all of the Fund's securities held in any Securities
System. Thereafter, such bank or trust company shall be the successor of the
Custodian under this Contract.

In the event that securities, funds and other properties remain in the
possession of the Custodian after the date of termination hereof owing to
failure of the Fund to procure the properly executed Copy of a document
evidencing action taken by the Trustees of the Trust or of the Trustees to
appoint a successor custodian, the Custodian shall be entitled to fair
compensation for its services during such period as the Custodian retains
possession of such securities, funds and other properties and the provisions of
this Contract relating to the duties and obligations of the Custodian shall
remain in full force and effect.

13.      Interpretive and Additional Provisions

In connection with the operation of this Contract, the Custodian and the Fund
may from time to time agree on such provisions interpretive of or in addition
to the provisions of this Contract as may in their joint opinion be consistent
with the general tenor of this Contract. Any such interpretive or additional
provisions shall be in a writing signed by both parties and shall be annexed
hereto, provided that no such interpretive or additional provisions shall
contravene any applicable federal or state regulations or any provision of the
governing instrument of the Fund. No interpretive or additional provisions made
as 


<PAGE>   15
provided in the preceding sentence shall be deemed to be an amendment of this
Contract.

The Custodian agrees that any claims by it against the Trust under this
Contract may be satisfied only from the assets of the Trust; that the person
executing this Contract on behalf of the Trust has executed it in his capacity
as an officer of the Trust and not individually, and that the obligations of
the Trust arising out of this Contract are not binding upon such person or the
Trust's shareholders individually but are binding only upon the assets and
property of the Trust; and that no shareholders, trustees or officers of the
Trust may be held personally liable or responsible for any obligations of the
Trust arising out of this Contract.

The Trust agrees that the person executing this Contract on behalf of the
Custodian has executed it in his capacity as an officer of the Custodian and
not individually, and that the obligations of the Custodian arising out of this
Contract are not binding on such person or the Custodian's officers, directors,
employees or shareholders individually but are binding only upon the Custodian;
and that no officer, director, employee or shareholder of the Custodian may be
held personally liable or responsible for any obligations of the Custodian
arising out of this Contract.

14.      Texas Law to Apply
This Contract shall be construed and the provisions thereof interpreted under
and in accordance with laws of the State of Texas.

15.      Prior Contracts
This Contract supersedes and terminates, as of the date hereof, all prior
contracts between the Fund and the Custodian relating to the custody of the
Fund's assets.

   
IN WITNESS WHEREOF, each of the parties has caused this instrument to be
executed in its name and behalf by its duly authorized representative and its
seal to be hereunder affixed as of the day of and year first written above.


ATTEST                                        AMERICAN AADVANTAGE MILEAGE FUNDS


/s/  BARRY Y. GREENBERG                       /s/  W. F. QUINN
- - ----------------------------                  --------------------------------
Authorized Employee                           By:  William F. Quinn


ATTEST                                        NATIONSBANK OF TEXAS, N.A.


/s/  TODD BRUNSKILL                           /s/  C. F. LEMMONS
- - -----------------------------                 --------------------------------
Authorized Employee                           By: 

    

<PAGE>   1
                                                                  Exhibit 99.b.9

                    TRANSFER AGENCY AND REGISTRAR AGREEMENT


   
         AGREEMENT, dated as of November 1, 1995, among American AAdvantage 
Mileage Funds, (the "Trust"), a Massachusetts business trust having its
principal place of business at 4333 Amon Carter Boulevard, Fort Worth, Texas
76155, AMR Investment Services, Inc. ("AMR Investments"), the Manager of the
Trust, a Delaware corporation having its principal place of business at 4333
Amon Carter Boulevard, Fort Worth, Texas 76155 and Goldman, Sachs & Co., a New
York limited partnership (the "Transfer Agent"), with offices at 4900 Sears
Tower, Chicago, Illinois 60606,
    

WITNESSETH

         That for and in consideration of the mutual covenants and promises
hereinafter set forth, the Trust, AMR Investments and the Transfer Agent agree
as follows:

         1.  Definitions.  Whenever used in this Agreement or the Schedules
hereto, the following words and phrases, unless the context otherwise requires,
shall have the following meanings:

                  (a) "Authorized Person" includes any person, whether or not
such person is an officer or employee of the Trust or AMR Investments, duly
authorized to give Oral Instructions or Written Instructions on behalf of the
Trust or AMR Investments as indicated in a certificate furnished from time to
time to the Transfer Agent in accordance with Section 4(c) hereof.

                  (b) "Board of Trustees" means the Board of Trustees, Board of
Directors or other governing body, as the case may be, of the Trust.

                  (c) "Commission" means the Securities and Exchange Commission.

                  (d) "Custodian" refers to any custodian or sub-custodian of
securities and other property which the Trust may from time to time deposit, or
cause to be deposited or held under the name or account of such a custodian
pursuant to a Custodian Agreement.

                  (e) "Declaration of Trust" means the Articles of
Incorporation, Declaration of Trust, By-laws or similar organizational
documents as the case may be, of the Trust as the same may be amended from time
to time.

                  (f) "1933 Act" means the Securities Act of 1933, as amended.

                  (g) "1934 Act" means the Securities Exchange Act of 1934, as
amended.
                  (h) "1940 Act" means the Investment Company Act of 1940, as
amended.

                  (i) "Oral Instructions" means instructions, other than
Written Instructions, actually received by the Transfer Agent from a person
reasonably believed by the Transfer Agent to be an Authorized Person;

<PAGE>   2



                  (j) "Prospectus" means the most recently dated Prospectus and
Statement of Additional Information, including any supplements thereto if any,
contained in the Trust's registration statement which has been filed with, and
declared effective by, the Commission under the 1933 Act and the 1940 Act.

                  (k) "Shares" refers collectively to such shares of capital
stock, beneficial interest or limited partnership interests, as the case may
be, of the Trust as may be issued from time to time; provided, however, that if
the Shares of the Trust may be issued in more than one series or class,
"Shares" shall refer to the shares of capital stock, beneficial interest or
limited partnership interest in such class or series.

                  (l) "Shareholder" means a holder of record of Shares.

                  (m) "Trust" means the investment company executing this
Agreement, and if it is a series fund, as such term is used in the 1940 Act
and/or multiple class fund, such term shall include each series and/or class of
the Trust hereafter created, except that such series and/or class shall be
listed on Schedule A before this Agreement shall become effective with respect
to each such series and/or class.

                  (n) "Written Instructions" means a written communication
signed by a person reasonably believed by the Transfer Agent to be an
Authorized Person and actually received by the Transfer Agent. Written
Instructions shall include manually executed originals and authorized
electronic transmissions, including telefacsimile of a manually executed
original or other process.

         2.  Appointment of the Transfer Agent. The Trust and AMR Investments
hereby appoint and constitute the Transfer Agent as transfer agent, registrar
and dividend disbursing agent for Shares and as shareholder servicing agent for
the Trust. The Transfer Agent accepts such appointments and, subject to the
terms and conditions hereof, agrees to perform the duties hereinafter set
forth. In addition, the Trust and AMR Investments authorize the Transfer Agent
to take such actions as are necessary, including opening of bank accounts for
the Trust, in order to effectuate the obligations of the Transfer Agent under
this Agreement.

         3.  Compensation

                  (a) AMR Investments or the Trust will compensate or cause
the Transfer Agent to be compensated for the performance of its obligations
hereunder with respect to the Trust in accordance with the fees set forth in
the written schedule of fees annexed hereto as Schedule A and incorporated
herein. The Transfer Agent will transmit an invoice to AMR Investments as soon
as practicable after the end of each calendar month which will be detailed in
accordance with Schedule A and AMR Investments or the Trust will pay to the
Transfer Agent the amount of such invoice within thirty (30) days after AMR
Investments' receipt of the invoice.

                  (b) Any compensation agreed to hereunder may be adjusted
from time to time by attaching to Schedule A a revised fee schedule executed
and dated by the parties hereto.

         4.  Documents. In connection with the appointment of the Transfer
Agent, the Trust shall deliver or cause to be delivered to the Transfer

<PAGE>   3



Agent the following documents on or before the date this Agreement goes into
effect but in any case within a reasonable period of time for the Transfer
Agent to prepare to perform its duties hereunder:

                  (a) If the Shares are issuable in certificate form, an
adequate supply of certificates for the Shares executed on behalf of the Trust
by the persons specified in the Declaration of Trust and, if required by the
Declaration of Trust, bearing the seal of the Trust.

                  (b) All account application forms and other documents
relating to Shareholder accounts or to any plan, program or service offered by
the Trust;

                  (c) A signature card bearing the signatures of any officer
of the Trust or AMR Investments or other Authorized Person who is authorized to
sign Written Instructions or is authorized to give Oral Instructions.

                  (d) A certified copy of the Declaration of Trust;

                  (e) A copy of the resolution of the Board of Trustees
authorizing the execution and delivery of this Agreement;

                  (f) If applicable, a certified list of Shareholders of the
Trust with the name, address and taxpayer identification number of each
Shareholder, and the number of Shares of the Trust (or of each series or class
thereof, as applicable held by each Shareholder, certificate numbers and number
of Shares represented thereby (if any certificates have been issued), lists of
any accounts against which stop transfer orders have been placed, together with
the reasons therefore, the number of Shares redeemed by the Trust, the
information specified in Paragraph I of Schedule B and any other information
reasonably requested by the Transfer Agent with respect to the Trust or
Shareholder accounts that have been opened or Shares outstanding on or before
the date this Agreement becomes effective; and

                  (g) An opinion of counsel for the Trust with respect to the
validity of the Shares and this Agreement and the status of such Shares under
the 1933 Act, which may be the opinion filed by the Trust with the Commission
pursuant to Rule 24f-2 under the 1940 Act if accompanied by a letter
authorizing the Transfer Agent to rely upon such opinion.

         5.  Further Documentation.  The Trust will also furnish the Transfer
Agent with copies of the following documents promptly after the same shall
become available:

                  (a) each resolution of the Board of Trustees authorizing the
issuance of Shares;

                  (b) any post-effective amendments to the registration
statements filed on behalf of the Trust with the Commission;

                  (c) a certified copy of each amendment to the Declaration of
Trust;

                  (d) certified copies of each resolution of the Board of
Trustees or other authorization designating Authorized Persons (or
authorization of AMR Investments designating Authorized Persons); and
<PAGE>   4

                  (e) such other certificates, documents or opinions as the
Transfer Agent may reasonably request in connection with the performance of its
duties hereunder.

         6.  Representations of the Trust.  The Trust represents to the
Transfer Agent that all outstanding Shares are validly issued, fully paid and
non-assessable.  When Shares are hereafter issued, such Shares shall be validly
issued, fully paid and nonassessable,

         7.  Distributions Payable in Shares. In the event that the Board of
Trustees of the Trust shall declare a distribution Payable in Shares with
respect to a series or class designated in Schedule A, the Trust shall deliver
or cause to be delivered to the Transfer Agent written notice of such
declaration signed on behalf of the Trust by an Authorized Person, upon which
notice the Transfer Agent shall be entitled to rely for all purposes. Such
Notice shall certify (i) the identity of the Shares involved, (ii) the number
of Shares involved, (iii) that all appropriate action has been taken and any
other information reasonably requested by the Transfer Agent.

         8.  Duties of the Transfer Agent. The Transfer Agent shall be
responsible for administering and or performing those functions typically
performed by a transfer agent; for providing clerical and ministerial
assistance to the Trust and AMR Investments in connection with the processing
of orders to purchase Shares; for acting as service agent in connection with
dividend and distribution functions; and for performing shareholder account and
administrative agent functions in connection with the issuance, transfer and
redemption (including coordination with the Custodian) of shares in accordance
with the terms of the Prospectus and applicable law. The operating standards
and procedures to be followed shall be determined from time to time by
agreement between the Trust and the Transfer Agent. In addition, the Trust
shall deliver to the Transfer Agent all notices issued by the Trust with
respect to the Shares and shall perform such other specific duties as are set
forth in the Declaration of Trust including the giving of notice of any special
or annual meetings of shareholders and any other notices required thereby.

         9.  Record Keeping and Other Information. The Transfer Agent shall
create and maintain all records required of it pursuant to its duties hereunder
in accordance with all applicable laws, rules and regulations, including
records required by Section 31(a) of the 1940 Act. All records shall be
available upon reasonable notice during regular business hours for inspection
and use by the Trust and AMR Investments. Where applicable, such records shall
be maintained by the Transfer Agent for the periods and in the places required
by Rule 31a-2 under the 1940 Act. The Transfer Agent agrees that all such
records prepared or maintained by the Transfer Agent relating to the services
to be performed hereunder are the property of the Trust.

         Upon reasonable notice by the Trust, the Transfer Agent shall make
available during regular business hours such of its facilities and premises
employed in connection with the performance of its duties under this Agreement
for reasonable visitation by the Trust or any person retained by the Trust or
AMR Investments as may be necessary for the Trust or AMR Investments to
evaluate the quality of the services performed by the Transfer Agent pursuant
hereto.

         10.  Other Duties. In addition to the duties set forth in Section 8
hereof and in Schedule B, the Transfer Agent shall perform such other duties
and functions, and shall be paid such amounts therefor, as may 
<PAGE>   5

from time to time be agreed upon in writing among the Trust, AMR Investments 
and the Transfer Agent. The compensation for such other duties and functions 
shall be reflected in a written amendment to Schedule A or B and the duties and
functions shall be reflected in an amendment to Schedule B, both dated and
signed by authorized persons of each of the parties hereto.

         11.  Reliance by Transfer Agent; Instructions,

                  (a) The Transfer Agent will have no liability when acting
upon Written or Oral Instructions reasonably believed to have been executed or
communicated by an Authorized Person and will not be held to have any notice of
any change of authority of any person until receipt of a Written Instruction
thereof from the Trust or AMR Investments as applicable pursuant to Section
4(c). The Transfer Agent will also have no liability when processing Share
certificates which it reasonably believes to bear the proper manual or
facsimile signatures of the officers of the Trust and the proper
counter-signature of the Transfer Agent.

                  (b) At any time, the Transfer Agent may apply to any
Authorized Person of the Trust for Written Instructions and may, at the expense
of the Transfer Agent, seek advice from legal counsel for the Trust, or its own
legal counsel, with respect to any matter arising in connection with this
Agreement, and it shall not be liable and shall be indemnified by the Trust for
any action taken or omitted by it in reliance upon such Written Instructions or
opinion of counsel to the Trust; provided that nothing in this Subsection shall
excuse the Transfer Agent when an action or omission by it constitutes willful
misfeasance, bad faith, gross negligence or reckless disregard of its duties
hereunder. Written Instructions requested by the Transfer Agent shall be
provided by the Trust within a reasonable period of time and the Transfer Agent
shall not be required to take any action under this Agreement that is the
subject of a request for Written instructions Until Written Instructions
responding to the satisfaction of the Transfer Agent to such request are
received by the Transfer Agent. The Transfer Agent, its officers, agents or
employees, shall accept Oral Instructions or Written Instructions given to them
by any person representing or acting on behalf of the Trust only if the
Transfer Agent reasonably believes said representative is an Authorized Person.
The Trust agrees that all Oral Instructions shall be followed within one
business day by confirming Written Instructions. The Trust's failure to so
confirm shall not impair in any respect the Transfer Agent's right to rely on
Oral Instructions. The Transfer Agent shall have no duty or obligation to
inquire into, nor shall the Transfer Agent be responsible for, the legality of
any act done by it upon the request or direction of a person reasonably
believed by the Transfer Agent to be an Authorized Person.

                  (c) Notwithstanding any of the foregoing provisions of this
Agreement, the Transfer Agent shall be under no duty or obligation to inquire
into, and shall not be liable for and shall be indemnified with respect to any
liability with respect to: (i) the legality of the issuance or sale of any
Shares or the sufficiency of the amount to be received therefor; (ii) the
legality of the redemption of any Shares, or the propriety of the amount to be
paid therefor; (iii) the legality of the declaration of any dividend by the
Board of Trustees, or the legality of the issuance of any Shares in payment of
any dividend; or (iv) the legality of any recapitalization or readjustment of
the Shares.
<PAGE>   6

         12.  Acts of God, etc. The Transfer Agent will not be liable or
responsible for delays or errors by acts of God or by reason of circumstances
beyond its control, including acts of civil or military authority, national
emergencies, labor difficulties, equipment failure, mechanical breakdown,
insurrection, war, riots, or failure or unavailability of transportation,
communication or power supply, fire, flood or other catastrophe.

         13.  Duty of Care and Indemnification.

                  (a) The Transfer Agent, in the performance of its duties
hereunder, shall use the care, skill, prudence and diligence under the
circumstances then prevailing that a prudent person acting in a like capacity
and familiar with such matters would use in the conduct of an enterprise of a
like character and with like aims and shall act in conformity with the Trust's
Declaration of Trust and Prospectus and any Written or Oral Instructions, and
shall, subject to the standard set forth above, comply with and conform to the
requirements of the 1940 Act, the 1934 Act, particularly Section 17A thereof,
and all other applicable federal and state laws, regulations and rulings.

                  (b) AMR Investments and the Trust hereby agree to indemnify
and hold harmless the Transfer Agent, its officers, partners and employees and
each person, if any, who controls the Transfer Agent against any and all
losses, claims, damages Of liabilities, joint or several, to which any such
person may become subject under the 1940 Act, the 1933 Act, the 1934 Act or
other federal or state statutory law or regulation, at common law or otherwise
insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon the Transfer Agent's actions and duties
hereunder. It is understood, however, that nothing in this Section 13 shall
protect the Transfer Agent, its officers, partners and employees and each
person, if any, who controls the Transfer Agent against any liability to AMR
Investments, the Trust or its shareholders and their officers, directors,
trustees and employees and each person, if any, who controls AMR Investments or
the Trust to which such person would otherwise be subject by reason of willful
misfeasance, bad faith, or negligence, in the performance of his duties, or by
reason of his reckless disregard of his obligations and duties under this
Agreement.

                  (c) The Transfer Agent hereby agrees to indemnify and hold
harmless AMR Investments and the Trust and their officers, directors, trustees
and employees and each person, if any, who controls AMR Investments or the
Trust against any and all losses, claims, damages or liabilities, joint or
several, to which such person may become subject under the 1940 Act, the 1933
Act, the 1934 Act or other federal or state statutory law or regulation, at
common law or otherwise, insofar as such losses, claims, damages or liabilities
(or actions in respect thereof) arise out of or are based upon the Transfer
Agent's willful misfeasance, bad faith, or gross negligence in the performance
of its duties or by reason of its reckless disregard of its obligations and
duties under this Agreement.

                   (d) The indemnifying party shall reimburse each indemnified
party for any reasonable legal or other expenses incurred by such indemnified
party in connection with investigating defending any such loss, claim, damages,
liability or action. In the case that any such action may be brought against
any indemnified party and such indemnified party shall notify the indemnifying
party, the indemnifying party shall be entitled to participate therein and, to
the extent that it shall wish, to assume the defense thereof, with counsel
reasonably 
<PAGE>   7

satisfactory to the indemnified party, and after notice from the
indemnifying party to such indemnified party of its election to assume the
defense thereof, the indemnifying party shall not be liable to such indemnified
party for any legal expense of other counsel, or any other expenses, in each
case subsequently incurred by such indemnified party in connection with the
defense of such action other than the reasonable costs of investigation.

         14.  Consequential Damages. In no event and under no circumstances
shall any party under this Agreement be liable to any other party for
consequential or indirect loss of profits, reputation or business or any other
special damages under any provision of this Agreement or for any act or failure
to act hereunder.

         15.  Term and Termination.

                   (a) This Agreement shall be effective on the date first
written above and shall continue thereafter until terminated in accordance with
this Agreement. This Agreement may be terminated by any party upon written
notice given to each of the other parties at least 150 days prior to the
termination date. In addition, this Agreement may be terminated at any time
upon 30 days' written notice in the event of a material breach of the terms of
this contract by such other party, provided that such breach is not cured
within a reasonable period of time.

                   (b) In the event a termination notice is given by the Trust,
it shall be accompanied by a resolution of the Board of Trustees, certified by
the Secretary of the Trust. Upon such termination and at the expense of the
Trust, the Transfer Agent will deliver to the successor transfer agent
designated by the Trust a certified list of shareholders of the Trust (with
names and addresses), and all other relevant books, records, correspondence and
other Trust records or data in the possession of the Transfer Agent, and the
Transfer Agent will cooperate with the Trust and any successor transfer agent
or agents in the substitution process.

                   (c) In the event a termination notice is given by the
Transfer Agent and upon selection of one or more successor transfer agent(s) by
the Trust, the Transfer Agent shall deliver to such successor(s), at the
Transfer Agent's cost, a certified list of Shareholders of the Trust (with
names and addresses) and all other relevant books, records, correspondence and
other Trust records or data in the possession of the Transfer Agent, and the
Transfer Agent shall cooperate with the Trust and any successor transfer
agent(s) in the substitution process.

         16.  Confidentiality. All parties hereto agree that any nonpublic
information obtained hereunder concerning each of the other parties is
confidential and may not be disclosed to any other person without the consent
of such other party, except as may be required by applicable law or at the
request of the Commission or other governmental agency. The parties further
agree that a breach of this provision would irreparably damage such other party
and accordingly agree that each of them is entitled, without bond or other
security, to an injunction or injunctions to prevent breaches of this
provision.

         17.  Amendment. This Agreement may only be amended or modified by a
written instrument executed by all the parties hereto.
<PAGE>   8

         18.  Subcontracting. The Trust and AMR Investments agree that the
Transfer Agent may, in its discretion, subcontract for certain of the services
described under this Agreement or the Schedules hereto; provided that any such
subcontracting shall not relieve the Transfer Agent of its responsibilities
hereunder; and provided, further, that the Transfer Agent shall notify the
Trust and AMR Investments of any such subcontracting agreement.

         19.  Miscellaneous.

                  (a) Notices. Any notice or other instrument authorized or
required by this agreement to be given in writing to the Trust, AMR Investments
or the Transfer Agent, shall be sufficiently given if addressed to that party
and received by it at its office set forth below or at such other place as it
may from time to time designate in writing.

To the Trust:                                   To AMR Investments:

American AAdvantage Funds                       AMR Investment Services, Inc.
4333 Amon Carter Blvd., MD5645                  4333 Amon Carter Blvd., MD5645
Fort Worth, Texas 76155                         Fort Worth, Texas 76155
Attn.: W. F. Quinn, President                   Attn.: W.F. Quinn, President

         To the Transfer Agent:

         Goldman, Sachs & Co.
         4900 Sears Tower
         Chicago Illinois 60606
         Attn.: Pauline Taylor

          (b)  Successors. This Agreement shall extend to and shall be binding
upon the parties hereto, and their respective successors and assigns, provided,
however, that this Agreement shall not be assigned to any person other than a
person controlling, controlled by or under common control with the assignor
without the written consent of each of the other parties, which consent shall
not be unreasonably withheld.

          (c)  Governing Law.  This Agreement shall be governed exclusively by 
the laws of the State of New York without reference to the choice of law 
provisions thereof.

          (d)  Counterparts. This Agreement may be executed in any number of or
counterparts, each of which shall be deemed to be an original; but such
counterparts shall, together, constitute only one instrument.

          (e)  Captions. The captions of this Agreement are included for
convenience of reference only and in no way define or delimit any of the
provisions hereof or otherwise affect their construction or effect.

          (f)  Use of Transfer Agent's Name. The Trust and AMR Investments 
shall not use the name of the Transfer Agent in any prospectus, statement of
additional information, shareholders' report, sales literature or other
material relating to the Trust in a manner not approved by the Transfer Agent
prior thereto in writing; provided, that the Transfer Agent need only receive
notice of all reasonable uses of its name which merely refer in accurate terms
to its appointment hereunder or which are required by any government agency or
applicable law or rule.

          (g)  Use of Trust's Name or AMR Investments' Name The Transfer Agent
shall not use the name of the Trust or AMR or Investments or 

<PAGE>   9

material relating to the Trust or AMR Investments on any documents or forms for 
other than internal use in a manner not approved by the Transfer Agent prior 
thereto by the Trust or AMR Investments in writing; provided, that the Trust or 
AMR Investments need only receive notice of all reasonable uses of its name 
which merely refer in accurate terms to the appointment of the Transfer Agent 
or which are required by any government agency or applicable law or rule.

         (h)  Independent Contractors. The parties agree that they are 
independent contractors and not partners or co-venturers.

         (i)  Entire Agreement; Severability. This Agreement and the Schedules
attached hereto constitute the entire agreement of the parties hereto relating
to the matters covered hereby and supersede any previous agreements. if any
provision is held to be illegal, unenforceable or invalid for any reason, the
remaining provisions shall not be affected or impaired thereby.

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

   
                                               AMERICAN AADVANTAGE FUNDS
                                               
                                               By:  /s/ NANCY ECKL 
                                                  -----------------------------
                                               Title:   Vice President
                                                     --------------------------

                                               AMR INVESTMENT SERVICES, INC..
        
                                               By:  /s/ W.F. QUINN
                                                  -----------------------------
                                               Title:   President
                                                     --------------------------

                                               GOLDMAN SACHS & CO.

                                               By:  /s/ PAULINE TAYLOR
                                                  -----------------------------
                                               Title:   Vice President
                                                     --------------------------
    
<PAGE>   10



                                   Schedule A
<TABLE>
<CAPTION>

Fee Schedule - American AAdvantage Mileage Funds

As of November 1, 1995
<S>                                          <C>
Annual Fee per Fund                              $10,000

Per Account Charges                              $0 (unless>4000 open accounts)

+ Out of Pocket Fees                             billed at cost

</TABLE>


The "Annual Fee per Fund" will increase $1000 per month until it reaches
$15,000. Should the number of open accounts exceed 4000 prior to May 1, 1996,
an additional annual charge of $20 per open account and $5 per closed account
will be added.


<TABLE>
<CAPTION>
As of May 1, 1996, the fee schedule is as follows:
<S>                                            <C>
Annual Fee per Fund                              $15,000

Per Account Charges                              $0 (unless>4000 open accounts)

      Open Accounts                              $20

      Closed Accounts                            $5

+ Out of Pocket Fees                             billed at cost

</TABLE>


<PAGE>   11



                                   Schedule B

DUTIES OF THE TRANSFER AGENT


         1.  Shareholder Information. The Transfer Agent or its agent shall
maintain a record of the number of Shares held by each holder of record which
shall include name, address, taxpayer identification number, the American
AAdvantage number, class of Shares (if applicable), balance of Shares in an
account, beneficial owner code (i.e., male, female, joint tenant, etc.),
dividend code (i.e., reinvestment) and indicate whether such Shares are held in
certificates or uncertificated form.

         2.  Shareholder Services. The Transfer Agent or its agent shall
investigate all reasonable inquiries from shareholders of the Trust relating to
their Shareholder accounts and shall respond to all communications from
Shareholders and other persons designated by the Trust relating to the Transfer
Agent's duties hereunder and such other correspondence as may from time to time
be mutually agreed upon between the Transfer Agent and the Trust.

         3.  Share Certificates.

                  (a) If the Shares are issuable in certificated form, the
Trust shall provide, at the Trust's expense, an adequate supply of certificates
for the Shares executed on behalf of the Trust by the persons specified in the
Declaration of Trust and, if required by the Declaration of Trust, bearing the
seal of the Trust. The Trust agrees that notwithstanding the death,
resignation, or removal of any officer of the Trust whose signature appears on
such certificates, the Transfer Agent or its agent may continue to countersign
certificates which bear such signatures until otherwise directed by Written
Instructions.

                  (b) The Transfer Agent or its agent shall issue replacement
Share certificates in lieu of certificates which have been lost, stolen or
destroyed, upon receipt by the Transfer Agent or its agent of properly executed
affidavits and lost certificate bonds, in form satisfactory to the Transfer
Agent or its agent, with the Trust and the Transfer Agent or its agent as
obligees under the bond.

                  (c) The Transfer Agent or its agent shall also maintain a
record of each certificate issued, the number of Shares represented thereby and
the holder of record. With respect to Shares held in open accounts or
uncertificated form ( i.e., no certificate being issued with respect thereto),
the Transfer Agent or its agent shall maintain comparable records of the record
holders thereof, including their names, addresses and taxpayer identification.
The Transfer Agent or its agent shall further maintain a stop transfer record
on lost and/or replaced certificates.

         4.  Mailing Communications to Shareholders; Proxy Materials. The
Transfer Agent or its agent shall address and mail to Shareholders of the
Trust, all reports to Shareholders, dividend and distribution notices and such
prospectuses, statements of additional information (upon request), annual
reports, semi-annual reports, proxy and related material for the Trust's
meetings of Shareholders and any other enclosures requested by the Trust, as
are provided to the Transfer Agent by the Trust. In connection with meetings of
Shareholders, the Transfer Agent or its agent will prepare certified
Shareholder lists, mail and certify as to the mailing of proxy materials,
process and tabulate 
<PAGE>   12

returned proxy cards, report on proxies voted prior to meetings, act as 
inspector of election at meetings and certify Shares voted at meetings.

         5.  Sale of Shares.

                  (a) Suspension of Sale of Shares. The Transfer Agent or its
agent shall not be required to issue any Shares of the Trust if it has received
a Written Instruction from the Trust or official notice from any appropriate
federal or state regulatory authority that the sale of the Shares has been
suspended or discontinued. The existence of such Written Instructions or such
official notice shall be conclusive evidence of the right of the Transfer Agent
or its agent to rely on such Written Instructions or official notice.

                  (b) Returned Checks. In the event that any check or other
order for the payment of money is returned unpaid for any reason, the Transfer
Agent or its agent shall: (i) give prompt notice of such return to the Trust or
its designee; (ii) place a stop transfer order against all Shares issued as a
result of such check or order; and (iii) take such actions as the Transfer
Agent may from time to time deem appropriate.

         6.  Purchase, Transfer or Redemption of Shares.

                  (a) Requirements for Purchase, Transfer or Redemption of
Shares. The Transfer Agent or its agent shall process all requests to purchase,
transfer or redeem Shares in accordance with the purchase, transfer or
redemption procedures set forth in the Trust's Prospectus.

                  The Transfer Agent or its agent shall purchase, transfer or
redeem Shares upon receipt of Oral or Written Instructions or such other means
of communication as shall be specified in the Prospectus and agreed to by the
Transfer Agent requesting such purchase, transfer or redemption. In the case of
any request for transfer or redemption of Shares in certificated form, the
Transfer Agent shall be entitled to require that the certificate representing
such Shares be surrendered in connection with such transfer or redemption and
shall be properly endorsed for transfer or redemption, accompanied by such
documents as the Transfer Agent or its agent reasonably may deem necessary.

                  The Transfer Agent or its agent reserves the right to refuse
to transfer or redeem Shares until it is satisfied that the endorsement on the
instructions is valid and genuine. The Transfer Agent or its agent also
reserves the right to refuse to transfer or redeem Shares until it is satisfied
that the requested transfer or redemption is legally authorized, and it shall
incur no liability for the refusal, in good faith, to make transfers or
redemptions which the Transfer Agent or its agent, in its good judgment, deems
improper or unauthorized, or until it is reasonably satisfied that there is no
basis to any claims adverse to such transfer or redemption.

                  (b) Notice to Custodian and Trust. When Shares are purchased
or redeemed, the Transfer Agent or its agent shall deliver to the Custodian and
the Trust or its designee a notification setting forth the number of Shares
purchased or redeemed. Such purchased or redeemed shares shall be reflected on
appropriate accounts maintained by the Transfer Agent or its agent reflecting
outstanding Shares and Shares attributed to individual accounts.

                  (c) Payment of Redemption Proceeds. The Transfer Agent or its
agent shall, upon receipt of the moneys paid to it by the Custodian 

<PAGE>   13


for the redemption of Shares, pay such moneys as are received from the 
Custodian, all in accordance with the procedures described in the written 
instruction received by the Transfer Agent or its agent from the Trust. The 
Transfer Agent will upon receipt of moneys from shareholders for the purchase 
of shares, pay such moneys to the Custodian.

                  The Transfer Agent or its agent shall not process or effect
any redemption with respect to Shares of the Trust after receipt by the
Transfer Agent or its agent of notification of the suspension of the
determination of the net asset value of the Trust. The Transfer Agent shall
identify redemption requests made with respect to accounts in which Shares have
been purchased within a time period agreed upon between the Transfer Agent and
the Trust for determining whether funds have been collected with respect to
such purchases. Unless otherwise directed by the Trust or AMR Investments, the
Transfer Agent shall not process any redemption so identified unless funds for
the purchase of such Shares have been received.

         7.  Dividends.

                  (a) Notice to Agent and Custodian. Upon the declaration of
each dividend, other than dividends declared on a daily basis, and each capital
gains distribution by the Board of Trustees with respect to Shares, the Trust
shall furnish or cause to be furnished to the Transfer Agent or its agent a
copy of a resolution of the Board of Trustees certified by the Secretary of the
Trust setting forth the date of the declaration of such dividend or
distribution, the ex-dividend date, the date of payment thereof, the record
date as of which Shareholders entitled to payment shall be determined, the
amount payable per Share to the Shareholders of record as of that date, the
total amount payable to the Transfer Agent or its agent on the payment date and
whether such dividend or distribution is to be paid in Shares of such class at
net asset value.

                  (b) Daily Dividend Funds. For daily dividend funds, which
shall be identified by the Trust to the Transfer Agent, the Trust directs the
Transfer Agent to (i) accept the daily dividend accrual rate from the Custodian
and to apply that rate to the outstanding Shares for that day, and (ii) to pay
or reinvest the accumulated daily dividend in accordance with the Prospectus
or, if applicable, written instructions from the Shareholder. On or before the
payment date specified in such resolution of the Board of Trustees, the
Custodian will pay to the Transfer Agent sufficient cash to make payment to the
Shareholders of record as of such payment date.

                  (c) Insufficient Funds for Payments. If the Transfer Agent
or its agent does not receive sufficient cash from the Custodian to make total
dividend and/or distribution payments to all Shareholders as of the record
date, the Transfer Agent or its agent shall, upon notifying the Trust, withhold
payment to all Shareholders of record as of the record date until sufficient
cash is provided to the Transfer Agent or its agent.

                  (d) Reports.  The Transfer Agent shall compute, prepare and 
mail all necessary reports with respect to dividend payments to Shareholders or 
authorities as requested by the Trust.  The Transfer Agent shall report to the 
Trust Purchases of Shares under a dividend reinvestment plan.

<PAGE>   14


         8.  Customer Service.

         The Transfer Agent shall respond to all telephone and written
inquiries received by the Transfer Agent. In response to telephone inquiries,
the Transfer Agent shall provide general, limited information, as agreed to in
writing between the Transfer Agent and the Trust, but shall provide no
investment advice. Notwithstanding anything in this Paragraph 8 to the
contrary, it is agreed that the Transfer Agent shall be acting solely in an
administrative capacity in connection with its duties under this Paragraph 8
and shall not be required to take any action that it reasonably believes could
be deemed to involve the distribution of the Shares. It is also agreed that the
Transfer Agent shall refer all questions regarding the Trust's portfolio
management to the Trust.

         9.  Blue Sky.

         The Transfer Agent will maintain records of Trust sales by state and
provide such reports to the Trust as agreed to by the Trust and the Transfer
Agent, including Blue Sky warning reports.

         10.  Communication with American Airlines' AAdvantage Travel 
Awards Program Department ("AAdvantage")

         Using a formula which (a) allocates "miles" to a Shareholders'
investment position, and (b) is provided to the Transfer Agent by the foremost,
the Transfer Agent will provide AAdvantage by the fourth day of each month an
electronic report detailing the miles earned by each Trust Shareholder during
the prior month. For new Shareholders who are not yet members of the AAdvantage
Program, the Transfer Agent and AAdvantage shall communicate in order to enroll
the Shareholder in the AAdvantage Program.

         11.  Communications to Shareholders Regarding Account Information.

         The Transfer Agent will mail a monthly client statement to all
shareholders reflecting their holdings in the Trust, any transaction activity
during the period, and AAdvantage miles accumulated during that month.
Transaction confirmations shall be provided to Shareholders as required by
applicable law.

         12.  Tax Reports.

         The Transfer Agent shall maintain records throughout the year to
enable Transfer Agent to report all necessary information, including but not
limited to Internal Revenue Service filings, total distributions, taxes
withheld and retirement account record keeping and reports. Reports will be
filed with the Internal Revenue Service via magnetic tape and paper reports
mailed to individual shareholders. Transfer Agent's tax reporting
responsibilities are applicable to Shares only and not to AAdvantage Program
miles.

         Transfer Agent shall conduct an annual test of the disaster recovery
of the system and operations used to support the Trust, and shall provide the
Trust with results of that test.

         13.  Disaster Recovery.

         The Transfer Agent shall maintain a disaster recovery plan reasonably
designed to keep the records and adequate systems available to the Trust.

<PAGE>   15



         14.  Compliance.


         The Transfer Agent shall maintain and provide to the Trust such
account records and perform all services in connection therewith in order that
such records are in conformity with all legal requirements applicable to its
services hereunder.


         15.  Taping of Communications with Shareholders.


         The Transfer Agent shall, unless otherwise directed by the Trust, make
an audio tape recording of each telephone call from a Shareholder regarding its
account or requesting the purchase, transfer or redemption of Shares.


         16.  Reconciliation of Bank Accounts.


         The Transfer Agent shall provide the Trust and AMR Investments with a
reconciliation of all the Trust's bank accounts employed by the Transfer Agent
in connection with its services hereunder.


         17.  Management Reports.


         The Transfer Agent shall provide the Trust and AMR Investments with
such management reports as the Trust or AMR Investments may reasonably request.


<PAGE>   1





                                                                 Exhibit 99.b.10


                               December 15, 1997



American AAdvantage Mileage Funds
4333 Amon Carter Boulevard MD 5645
Fort Worth, Texas 76155

Ladies and Gentlemen:

         You have requested our opinion as to certain matters regarding the
issuance by American AAdvantage Mileage Funds (the "Trust") of shares of
beneficial interest (collectively, the "Shares"). The Trust is about to file
Post- Effective Amendment No. 5 to its Registration Statement on Form N-1A
("PEA No. 5") for the purpose of (1) adding two new series, the S&P 500 Index
Mileage Fund and the Intermediate Bond Mileage Fund, (2) changing the name of
the Limited-Term Income Mileage Fund to the Short-Term Bond Mileage Fund, and
(3) amending such other information as appropriate.

         We have, as counsel, participated in various business and other
matters relating to the Trust.  We have examined copies, either certified or
otherwise proved to be genuine, of the Trust's Declaration of Trust and By-Laws
and such other documents relating to the authorization and issuance of the
Shares as we have deemed relevant, and we generally are familiar with the
Trust's business affairs.  Based on the foregoing, it is our opinion that the
Shares to be issued pursuant to PEA No. 5 may be issued in accordance with the
Trust's Declaration of Trust and By-Laws, subject to compliance with the
Securities Act of 1933, as amended, the Investment Company Act of 1940, as
amended, and applicable federal and state laws regulating the distribution of
securities, and when so issued, those Shares will be legally issued, fully paid
and non-assessable.

         The Trust is an entity of the type commonly known as a "Massachusetts
business trust."  Under Massachusetts law, shareholders could, under certain
circumstances, be held personally liable for the obligations of the Trust.  The
Declaration of Trust states that creditors of, contractors with and claimants
against the Trust shall look only to the assets of the Trust for payment.  It
also requires that notice of such disclaimer be given in each contract or
instrument made or issued by the officers or the Trustees of the Trust on
behalf of the Trust.  The Declaration of Trust further
<PAGE>   2
American AAdvantage Mileage Funds  
December 15, 1997
Page 2


provides:  (1) for the Trust to indemnify and hold each shareholder harmless
from Trust assets for all loss and expense of any shareholder held personally
liable for the obligations of the Trust by virtue of ownership of Shares of the
Trust; and (2) for the Trust to assume the defense of any claim against the
shareholder for any act or obligation of the Trust.  Thus, the risk of a
shareholder incurring financial loss on account of shareholder liability is
limited to circumstances in which the Trust would be unable to meet its
obligations.

         We hereby consent to this opinion accompanying the Registration
Statement that you are about to file with the Securities and Exchange
Commission.  We also consent to the reference to our firm in the statement of
additional information filed as part of PEA No. 5.

                                        Very truly yours,

                                        KIRKPATRICK & LOCKHART LLP



                                        By 
                                          ------------------------
                                          Robert J. Zutz


<PAGE>   1
                                                                 Exhibit 99.b.13

                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 94,000 shares of beneficial interest of the
American AAdvantage Money Market Mileage Fund which we have purchased from you
today in the aggregate amount of $94,000.  Please be advised that these shares
were purchased for investment only with no present intention of selling such
shares, and we do not now have any intention of redeeming or selling such
shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President
<PAGE>   2
                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 1,000 shares of beneficial interest of the
American AAdvantage U.S. Treasury Money Market Mileage Fund which we have
purchased from you today in the aggregate amount of $1,000.  Please be advised
that these shares were purchased for investment only with no present intention
of selling such shares, and we do not now have any intention of redeeming or
selling such shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President
<PAGE>   3
                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 1,000 shares of beneficial interest of the
American AAdvantage Municipal Money Market Mileage Fund which we have purchased
from you today in the aggregate amount of $1,000.  Please be advised that these
shares were purchased for investment only with no present intention of selling
such shares, and we do not now have any intention of redeeming or selling such
shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President
<PAGE>   4
                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 50 shares of beneficial interest of the
American AAdvantage Balanced Mileage Fund which we have purchased from you
today in the aggregate amount of $1,000.  Please be advised that these shares
were purchased for investment only with no present intention of selling such
shares, and we do not now have any intention of redeeming or selling such
shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President
<PAGE>   5
                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 50 shares of beneficial interest of the
American AAdvantage Limited-Term Income Mileage Fund which we have purchased
from you today in the aggregate amount of $1,000.  Please be advised that these
shares were purchased for investment only with no present intention of selling
such shares, and we do not now have any intention of redeeming or selling such
shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President
<PAGE>   6
                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 50 shares of beneficial interest of the
American AAdvantage International Equity Income Mileage Fund which we have
purchased from you today in the aggregate amount of $1,000.  Please be advised
that these shares were purchased for investment only with no present intention
of selling such shares, and we do not now have any intention of redeeming or
selling such shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President
<PAGE>   7
                                AMR Investments
                            P.O. Box 619003, MD 5645
                  Dallas/Fort Worth Airport, Texas 75261-9003
                                 (817) 967-3509
                               (817) 967-0768 Fax



                                       September 13, 1995


American AAdvantage Mileage Funds


Ladies and Gentlemen:

         This letter concerns the 50 shares of beneficial interest of the
American AAdvantage Growth and Income Mileage Fund which we have purchased from
you today in the aggregate amount of $1,000.  Please be advised that these
shares were purchased for investment only with no present intention of selling
such shares, and we do not now have any intention of redeeming or selling such
shares.


                                       Very truly yours,


                                       /s/ W.F. Quinn
                                       William F. Quinn
                                       President

<PAGE>   1
                                                               Exhibit 99.b.15.a

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                               DISTRIBUTION PLAN

         WHEREAS, the American AAdvantage Mileage Funds (the "Mileage Trust")
is registered under the Investment Company Act of 1940, as amended ("1940
Act"), as an open-end management investment company, and offers for public sale
distinct series of shares of beneficial interest, each corresponding to a
distinct portfolio (a "Fund"); and

         WHEREAS, the Mileage Trust, on behalf of its one or more designated
portfolios presently existing or hereafter established (hereinafter referred to
as "Portfolios"), desires to adopt a Distribution Plan pursuant to Rule l2b-1
under the 1940 Act and the Board of Trustees of the Mileage Trust has
determined that there is a reasonable likelihood that adoption of this
Distribution Plan will benefit the Mileage Trust and its shareholders; and

         WHEREAS, the Mileage Trust presently intends to employ a registered
broker-dealer as Distributor of the securities of which it is the issuer;

         NOW, THEREFORE, the Mileage Trust hereby adopts this Distribution Plan
(the "Plan") in accordance with Rule l2b-1 under the 1940 Act on the following
terms and conditions:

         1. A Fund is authorized to pay to the Distributor or to AMR Investment
Services, Inc. ("AMR"), or to such other entities as approved by the Board, as
compensation for the distribution-related and/or shareholder services provided
by such entities, an aggregate fee at the rate of up to 0.25% on an annualized
basis of the average daily net assets of each such Fund which has approved this
Plan in accordance with the conditions of approval set forth herein. Such fee
shall be calculated and accrued daily and paid quarterly or at such other
intervals as the Board shall determine.

         2. The Distributor, AMR or any other entity approved by the Board
pursuant to paragraph 1 may spend such amounts as it deems appropriate on any
activities or expenses primarily intended to result in or relate to the sale or
servicing of a participating Fund's shares or shareholders, including, but not
limited to, advertising, service fees, transfer agency or subtransfer agency
expenses and expenses incurred in connection 


                                      -1-

<PAGE>   2


with participation in American Airlines AAdvantage Travel Awards Program.

         3. This Plan shall not take effect with respect to a Fund, unless it
first has been approved by a vote of the then existing shareholder(s) of such
Fund.

         4. This Plan shall not take effect with respect to a Fund unless it
first has been approved, together with any related agreements, by votes of a
majority of both (a) the Board and (b) those Trustees of the Mileage Trust who
are not "interested persons" of the Mileage Trust and have no direct or
indirect financial interest in the operation of this Plan or any agreements
related thereto ("Independent Trustees"), cast in person at a meeting (or
meetings) called for the purpose of voting on such approval; and until the
Trustees who approve the Plan's taking effect with respect to such Fund have
reached the conclusion required by Rule 12b-1(e) under the 1940 Act.

         5. After approval as set forth in paragraphs 3 and 4, this Plan shall
take effect and continue in full force and effect with respect to a Fund for so
long as such continuance is specifically approved at least annually in the
manner provided for approval of this Plan in paragraph 4.

         6. The Distributor, AMR and any other recipient of payments hereunder
shall provide to the Board and the Board shall review, at least quarterly, a
written report of the amounts expended with respect to each applicable Fund by
such recipient under this Plan and the purposes for which such expenditures
were made.

         7. This Plan may be terminated with respect to any Fund at any time by
vote of the Board, by vote of a majority of the Independent Trustees, or by
vote of a majority of the outstanding voting securities of such Fund.

         8. This Plan may not be amended to increase materially the amount of
fees provided for in paragraph 1 hereof unless such amendment is approved in
the manner provided for initial approval in paragraphs 3 and 4 hereof, and no
material amendment to the Plan shall be made unless approved in the manner
provided for approval and annual renewal in paragraph 5 hereof.

         9. The amount of the fees payable by a Fund to the Distributor or to
AMR or any other authorized entity under paragraph 1 hereof is not related
directly to expenses incurred 


                                      -2-


<PAGE>   3



by such entities hereunder on behalf of such Fund in providing
distribution-related and/or shareholder services hereunder, and paragraph 2
hereof does not obligate such Fund to reimburse any such entity for such
expenses. The fees set forth in paragraph 1 hereof will be paid by such Fund to
such entities until the Plan is either terminated or not renewed. If the Plan
is terminated or not renewed with respect to a Fund, any distribution-related
or shareholder servicing expenses incurred by such entities on behalf of such
Fund in excess of payments of the fees specified in paragraph 1 hereof which
have been received or accrued through the termination date are the sole
responsibility and liability of the entity incurring such expenses, and are not
obligations of such Fund.

         10. While this Plan is in effect, the selection and nomination of the
Trustees who are not interested persons of the Mileage Trust shall be committed
to the discretion of the Trustees who are not interested persons of the Mileage
Trust.

         11. As used in this Plan, the terms "majority of the outstanding
voting securities" and "interested person" shall have the same meaning as those
terms have in the 1940 Act.

         12. The Mileage Trust shall preserve copies of this Plan (including
any amendments thereto) and any related agreements and all reports made
pursuant to paragraph 6 hereof for a period of not less than six years from the
date of this Plan, the first two years in an easily accessible place.

         13. The Trustees of the Mileage Trust and the shareholders of the
Funds shall not be liable for any obligations of the Trust or the Fund under
this Plan, and AMR or any other person, in asserting any rights or claims under
this Plan, shall look only to the assets and property of the Mileage Trust or
the Funds in settlement of such right or claim, and not to such Trustees or
shareholders.

         IN WITNESS WHEREOF, the Mileage Trust has executed this plan on the
day and year set forth below.


DATE                                           AMERICAN AADVANTAGE MILEAGE FUNDS



November 1, 1995                               By: /s/ W.F. Quinn
- - --------------------------                         -----------------------------






                                      -3-

<PAGE>   1
                                                               Exhibit 99.b.15.b

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                                 PLATINUM CLASS
                               DISTRIBUTION PLAN

         WHEREAS, the American AAdvantage Mileage Funds (the "Mileage Trust")
is registered under the Investment Company Act of 1940, as amended ("1940
Act"), as an open-end management investment company, and offers for public sale
distinct series of shares of beneficial interest, each corresponding to a
distinct portfolio (a "Fund"); and

         WHEREAS, the Mileage Trust, on behalf of the Platinum Class of its one
or more designated portfolios presently existing or hereafter established
(hereinafter referred to as "Portfolios"), desires to adopt a Distribution Plan
pursuant to Rule l2b-1 under the 1940 Act and the Board of Trustees of the
Mileage Trust ("Board") has determined that there is a reasonable likelihood
that adoption of this Distribution Plan will benefit the Platinum Class and its
shareholders; and

         WHEREAS, the Trust presently intends to employ a registered
broker-dealer ("Distributor") as distributor of the securities of which it is
the issuer;

         NOW, THEREFORE, the Platinum Class hereby adopts this Distribution
Plan (the "Plan") in accordance with Rule l2b-1 under the 1940 Act on the
following terms and conditions:

         1. A Fund is authorized to pay to the Distributor or to AMR Investment
Services, Inc. ("AMR"), or to such other entities as approved by the Board, as
compensation for the distribution-related and/or shareholder services provided
by such entities, an aggregate fee at the rate of up to 0.25% on an annualized
basis of the average daily net assets of the Platinum Class of each such Fund
which has approved this Plan in accordance with the conditions of approval set
forth herein. Such fee shall be calculated and accrued daily and paid quarterly
or at such other intervals as the Board shall determine.

         2. The Distributor, AMR or any other entity approved by the Board
pursuant to paragraph 1 may spend such amounts as it deems appropriate on any
activities or expenses primarily intended to result in or relate to the sale or
servicing of a participating Fund's shares or shareholders, including, but not
limited to, advertising, shareholder servicing fees, transfer agency or


                                      -1-

<PAGE>   2



subtransfer agency expenses and expenses incurred in connection with
participation in the American Airlines AAdvantage Travel Awards Program.

         3. This Plan shall not take effect with respect to a Fund, unless it
first has been approved by a vote of the then existing shareholder(s) of such
Fund.

         4. This Plan shall not take effect with respect to a Fund unless it
first has been approved, together with any related agreements, by votes of a
majority of both (a) the Board and (b) those Trustees of the Mileage Trust who
are not "interested persons" of the Mileage Trust and have no direct or
indirect financial interest in the operation of this Plan or any agreements
related thereto ("Independent Trustees"), cast in person at a meeting (or
meetings) called for the purpose of voting on such approval; and until the
Trustees who approve the Plan's taking effect with respect to such Fund have
reached the conclusion required by Rule 12b-1(e) under the 1940 Act.

         5. After approval as set forth in paragraphs 3 and 4, this Plan shall
take effect and continue in full force and effect with respect to a Fund for so
long as such continuance is specifically approved at least annually in the
manner provided for approval of this Plan in paragraph 4.

         6. The Distributor, AMR and any other recipient of payments hereunder
shall provide to the Board and the Board shall review, at least quarterly, a
written report of the amounts expended with respect to each applicable Fund by
such recipient under this Plan and the purposes for which such expenditures
were made.

         7. This Plan may be terminated with respect to the Platinum Class of
any Fund at any time by vote of the Board, by vote of a majority of the
Independent Trustees, or by vote of a majority of the outstanding voting
securities of such Platinum Class.

         8. This Plan may not be amended to increase materially the amount of
fees provided for in paragraph 1 hereof unless such amendment is approved in
the manner provided for initial approval in paragraphs 3 and 4 hereof, and no
material amendment to the Plan shall be made unless approved in the manner
provided for approval and annual renewal in paragraph 5 hereof.


                                      -2-


<PAGE>   3



         9. The amount of the fees payable by a Fund to the Distributor or to
AMR or any other authorized entity under paragraph 1 hereof is not related
directly to expenses incurred by such entities hereunder on behalf of such Fund
in providing distribution-related and/or shareholder services hereunder, and
paragraph 2 hereof does not obligate such Fund to reimburse any such entity for
such expenses. The fees set forth in paragraph 1 hereof will be paid by such
Fund to such entities until the Plan is either terminated or not renewed. If
the Plan is terminated or not renewed with respect to a Fund, any
distribution-related or shareholder servicing expenses incurred by such
entities on behalf of such Fund in excess of payments of the fees specified in
paragraph 1 hereof which have been received or accrued through the termination
date are the sole responsibility and liability of the entity incurring such
expenses, and are not obligations of such Fund.

         10. While this Plan is in effect, the selection and nomination of the
Trustees who are not interested persons of the Mileage Trust shall be committed
to the discretion of the Trustees who are not interested persons of the Mileage
Trust.

         11. As used in this Plan, the terms "majority of the outstanding
voting securities" and "interested person" shall have the same meaning as those
terms have in the 1940 Act.

         12. The Mileage Trust shall preserve copies of this Plan (including
any amendments thereto) and any related agreements and all reports made
pursuant to paragraph 6 hereof for a period of not less than six years from the
date of this Plan, the first two years in an easily accessible place.

         13. The Trustees of the Mileage Trust and the shareholders of the
Funds shall not be liable for any obligations of the Trust or the Fund under
this Plan, and AMR or any other person, in asserting any rights or claims under
this Plan, shall look only to the assets and property of the Mileage Trust or
the Funds in settlement of such right or claim, and not to such Trustees or
shareholders.


DATE:  December 1, 1995



                                      -3-

<PAGE>   1
                                                               EXHIBIT 99.b.15.c

                       AMERICAN AADVANTAGE MILEAGE FUNDS
                               - PLATINUM CLASS -

                          ADMINISTRATIVE SERVICES PLAN


         AGREEMENT made this __ day of ________, 1995, by and between AMERICAN
AADVANTAGE MILEAGE FUNDS (the "Mileage Trust") and AMR INVESTMENT SERVICES,
INC. ("AMR").

         WHEREAS, the Mileage Trust, a Massachusetts business trust, is an
open-end, management investment company registered under the Investment Company
Act of 1940, as amended (the "1940 Act"), consisting of several series
(portfolios) of shares (each a "Fund" and, collectively, the "Funds"), each
having its own investment policies;

         WHEREAS, the Mileage Trust's Board of Trustees ("Board") has
authorized each of the Funds to issue multiple classes of shares, including a
class to be designated as the Platinum Class, and in the future may authorize
new Funds to issue multiple classes, including the Platinum Class;

         WHEREAS, the Mileage Trust desires to adopt an Administrative Services
Plan ("Plan") with respect to the Platinum Class;

         NOW, THEREFORE, the Mileage Trust hereby adopts this Plan with respect
to the Platinum Class.

         1.      A Fund is authorized to pay to AMR or to such other entities
approved by the Board, as compensation for administrative services provided by
such entities to Platinum Class shareholders, an aggregate fee at the rate of
up to 0.55% on an annualized basis of the average daily net assets of the
Platinum Class of each such Fund which has approved this Plan in accordance
with the conditions of approval set forth herein.  Such fee shall be calculated
and accrued daily and paid quarterly or at such other intervals as the Board
shall determine.

         2.      AMR or any other entity approved by the Board may spend such
amounts as it deems appropriate on any activities or expenses primarily
intended to result in or relate to the administration of a participating Fund's
Platinum Class shares, including, but not limited to, the payment of fees for
the purposes of record maintenance, forwarding Fund and shareholder


                                    - 1 -
<PAGE>   2
communications, and expenses related to aggregating and processing orders for
the purchase and redemption of shares.


         3.      This Plan shall not take effect with respect to the Platinum
Class of a Fund unless it first has been approved, together with any related
agreements, by votes of a majority of both (a) the Board and (b) those Trustees
of the Mileage Trust who are not "interested persons" of the Mileage Trust and
have no direct or indirect financial interest in the operation of this Plan or
any agreements related thereto ("Independent Trustees"), cast in person at a
meeting (or meetings) called for the purpose of voting on such approval.

         4.      After approval as set forth in paragraph 3 , this Plan shall
take effect and continue in full force and effect with respect to the Platinum
Class of a Fund for so long as such continuance is specifically approved at
least annually in the manner provided for approval of this Plan in paragraph 3.

         5.      AMR and any other recipient of payments hereunder shall
provide to the Board and the Board shall review, at least quarterly, a written
report of the amounts expended with respect to the Platinum Class of each
applicable Fund under this Plan and the purposes for which such expenditures
were made.

         6.      This Plan may be terminated with respect to the Platinum Class
of any Fund at any time by vote of the Board, or by vote of a majority of the
Independent Trustees.

         7.      This Plan may not be amended to increase materially the amount
of fees provided for in paragraph 1 hereof unless such amendment is approved in
the manner provided for initial approval in paragraph 3 hereof, and no material
amendment to the Plan shall be made unless approved in the manner provided for
approval and annual renewal in paragraph 4 hereof.

         8.      The amount of the fees payable by a Fund to AMR or to any
other authorized entity under paragraph 1 hereof is not related directly to
expenses incurred by such entities hereunder on behalf of such Fund in
providing shareholder services hereunder, and paragraph 2 hereof does not
obligate such Fund to reimburse any such entity for such expenses.  The fees
set forth in paragraph 1 hereof will be paid by such Fund to such entities
until the Plan is either terminated or not renewed.  If the Plan is terminated
or not renewed with respect to a Fund, any shareholder servicing expenses
incurred by such entities on behalf of such Fund in excess of payments of the
fees specified in paragraph 1 hereof which have been received or accrued
through


                                    - 2 -
<PAGE>   3
the termination date are the sole responsibility and liability of the entity
incurring the expenses, and are not obligations of such Fund.

         9.      While this Plan is in effect, the selection and nomination of
the Independent Trustees shall be committed to the discretion of the
Independent Trustees.

         10.     As used in this Plan, the term "interested person" shall have
the same meaning as the term in the 1940 Act.

         11.     The Mileage Trust shall preserve copies of this Plan
(including any amendments thereto) and any related agreements and all reports
made pursuant to paragraph 5 hereof for a period of not less than six years
from the date of this Plan, the first two years in an easily accessible place.

         12.     The Trustees of the Mileage Trust and the shareholders of the
Funds shall not be liable for any obligations of the Trust or the Fund under
this Plan, and AMR or any other person, in asserting any rights or claims under
this Plan, shall look only to the assets and property of the Mileage Trust or
the Funds in settlement of such right or claim, and not to such Trustees or
shareholders.

         IN WITNESS WHEREOF, the Mileage Trust has executed this plan on the
day and year set forth below.


DATE                              AMERICAN AADVANTAGE MILEAGE FUNDS


                                  By:
- - -------------------------            ---------------------------


                                    - 3 -

<PAGE>   1
                                                                 Exhibit 99.b.16

                     SCHEDULE OF COMPUTATION OF PERFORMANCE
                                   QUOTATIONS

                                 P(1+T)n=ERV

Where:          P =   Hypothetical Initial Payment of $1000
                T =   Average Annual Total Return
                n =   Number of Years
              ERV =   Ending Redeemable Value of Hypothetical $1000 
                      Investment Made at the Beginning of the Year


<TABLE>
<CAPTION>
                                  ONE YEAR PERIOD                        FIVE YEAR PERIOD                            
                                  (11/1/96 - 10/31/97)                   (11/1/92 - 10/31/97)                        
                                  --------------------                   --------------------                        
<S>                               <C>                                    <C>                        
BALANCED FUND                     1000(1+ .195200)=1195.100              1000(1+ .144547)(5)=1964.121                
Inception date (7/1/87)                   (19.52%)                                (14.45%)                           
                                                                         

GROWTH AND INCOME FUND                                                                                               
Inception date (7/1/87)           1000(1+ .276000)=1276.000              1000(1+ .187795)(5)=2364.327                
                                          (27.60%)                                (18.78%)                           
                                                                                       

INTERNATIONAL EQUITY                                                                                                 
FUND                              1000(1+ .184400)=1184.400              1000(1+ .176997)(5)=2258.795                
Inception date (8/7/91)                   (18.44%)                                (17.70%)                           
                                                                               

LIMITED-TERM INCOME                                                                                                  
FUND                              1000(1+ .059018)=1059.018              1000(1+ .051549)(5)=1285.723                
Inception date (12/3/87)                  (5.90%)                                 (5.15%)                            
                                                      

MONEY MARKET FUND -                                                                                                  
MILEAGE CLASS                     1000(1+ .051444)=1051.444              1000(1+ .044913)(5)=1245.663                
Inception date (9/1/87)                   (5.14%)                                 (4.49%)                            
                                                                                                                     

MUNICIPAL MONEY                                                                                                      
MARKET FUND                       1000(1+ .031798)=1031.798                            N/A                           
Inception date (11/10/93)                 (3.18%)                                                                    
                         

U.S. GOVERNMENT MONEY                                                                                                
MARKET FUND                       1000(1+.050020)= 1050.020              1000(1+ .043502)(5)=1237.276                
Inception date (3/2/92)                   (5.00%)                                 (4.35%)                            
</TABLE>
                                                              


<TABLE>
<CAPTION>
                                  TEN YEAR PERIOD
                                  (11/1/87 - 10/31/97)                       SINCE INCEPTION TO 10/31/97
                                  --------------------                       ---------------------------          
<S>                               <C>                                        <C> 
                                                                                               (10.2904)
BALANCED FUND                     1000(1+ .128812)(10)=3359.048              1000(1+ .114404) = 3048.511
Inception date (7/1/87)                        (12.88%)                                (11.44%)
                                  

GROWTH AND INCOME FUND                                                                         (10.2904)
Inception date (7/1/87)           1000(1+ .160980)(10)=4448.846              1000(1+ .135366) = 3692.923
                                               (16.10%)                                (13.54%)
                                  

INTERNATIONAL EQUITY                                                                            (6.2356)
FUND                                          N/A                            1000(1+ .118691) = 2012.505
Inception date (8/7/91)                                                                (11.87%)
                                  

LIMITED-TERM INCOME                                                                             (9.9123)
FUND                                          N/A                            1000(1+ .067823) = 1916.432
Inception date (12/3/87)                                                               (6.78%)
                                  

MONEY MARKET FUND -                                                                            (10.1671)
MILEAGE CLASS                     1000(1+ .059100)(10)=1775.700              1000(1+ .059260)= 1795.575
Inception date (9/1/87)                        (5.91%)                                 (5.93%)
                                                                                                                        

MUNICIPAL MONEY                                                                                 (3.9753)
MARKET FUND                                   N/A                            1000 (1+ .029866)= 1124.106
Inception date (11/10/93)                                                              (2.99%)
                         

U.S. GOVERNMENT MONEY                                                                           (5.6685)
MARKET FUND                                   N/A                            1000 (1+ .042653)= 1267.142
Inception date (3/2/92)                                                                (4.27%)
</TABLE>




<PAGE>   2

                     SCHEDULE FOR COMPUTATION OF PERFORMANCE
                                   QUOTATIONS


            MONEY MARKET FUNDS - FOR THE 7 DAY PERIOD ENDED 10/31/97

<TABLE>
<CAPTION>
                                                 CURRENT YIELD                               EFFECTIVE YIELD
                                                 -------------                               ---------------
<S>                                              <C>                                         <C>            
     MONEY MARKET FUND-MILEAGE CLASS             (.0009785443 x (365/7)) = 5.10%             ((.0009785443 + 1)(365/7) -1) = 5.23%
     MUNICIPAL MONEY MARKET FUND                 (.0006124674 x (365/7)) = 3.19%             ((.0006124674 + 1)(365/7) -1) = 3.24%
     U.S. GOVERNMENT MONEY MARKET FUND           (.0009646125 x (365/7)) = 5.03%             ((.0009646125 + 1)(365/7) -1) = 5.16%
</TABLE>



        MUNICIPAL MONEY MARKET FUND - FOR THE 7 DAY PERIOD ENDED 10/31/97

<TABLE>
<CAPTION>
CURRENT TAX EQUIVALENT YIELD                                          EFFECTIVE TAX EQUIVALENT YIELD
- - ----------------------------                                          ------------------------------
<S>                                                                   <C>
(.0006124674 x (365/7))/(1-.396) = 5.29%                              ((.0006124674 + 1)(365/7) -1)/(1-.396) = 5.37%
</TABLE>


 LIMITED - TERM INCOME FUND - 30 DAY S.E.C. YIELD FOR THE PERIOD ENDING 10/31/97

                   30 day yield = 2x{((a-b) + 1)(6) - 1}
                                      -----
                                       cd

Where:     a = Dividends and interest earned during the period.

           b = Expenses accrued for the period (net of reimbursements)

           c = The average daily number of shares outstanding during the period 
               entitled to receive dividends

           d = The maximum offering price per share on the last day of the 
               period.

                    2x{((5,517.290 - 770.530)  +  1)6  -  1} = 5.130%
                        ---------------------           
                            116,879 x 9.60

<PAGE>   3

  LIMITED - TERM INCOME FUND MONTHLY DISTRIBUTION RATE FROM 10/1/97 TO 10/31/97

                       Monthly Dividend Rate = A/P*(365/n)

Where:      A = Dividend accrual per share during the month
                                        (income distributions)

            P = Share price at the end of month

            n = Number of Days

                         .0498393512/9.60x(365/31)=6.11%


<PAGE>   4


                     SCHEDULE OF COMPUTATION OF PERFORMANCE
                                   QUOTATIONS

                                 PLATINUM CLASS


<TABLE>
<CAPTION>
                               ONE YEAR PERIOD                      FIVE YEAR PERIOD                       
PLATINUM CLASS                 (11/1/96 - 10/31/97)                 (11/1/92 - 10/31/97)                   
- - --------------                 -------------------------------      ---------------------------------      
<S>                            <C>                                  <C>                                           
MONEY MARKET FUND Inception    1000(1+ .048677)= 1048.677           1000(1+ .045630)(5)= 1249.943           
date (9/1/87)                            (4.87)                                  (4.56%)                    

MONEY MARKET MILEAGE FUND                                                                                   
Inception date (9/1/87)        1000(1+ .047055)= 1047.055           1000(1+ .043372)(5)= 1236.505           
                                         (4.71%)                                 (4.34%)                    

MUNICIPAL MONEY MARKET FUND                                                                                 
Inception date (11/10/93)      1000(1+ .027910)= 1027.910                        N/A                        
                                         (2.79%)                                                            

U.S. GOVERNMENT MONEY                                                                                       
MARKET FUND                    1000(1+ .046138)= 1046.138           1000(1+ .043241)(5)= 1235.729           
Inception date (3/2/92)                  (4.61%)                                 (4.32%)                    
</TABLE>


<TABLE>
<CAPTION>
                               TEN YEAR PERIOD
PLATINUM CLASS                 (11/1/87 - 10/31/97)                      SINCE INCEPTION TO 10/31/97
- - --------------                 ------------------------------            ---------------------------
<S>                            <C>                                       <C>  
                                                                                       (10.1671)
MONEY MARKET FUND Inception    1000(1+ .059727)(10)= 1786.241            1000(1+ .059877)= 1806.238
date (9/1/87)                             (5.97%)                                (5.99%)

MONEY MARKET MILEAGE FUND                                                              (10.1671)
Inception date (9/1/87)        1000(1+ .058319)(10)= 1762.649            1000(1+ .058492)= 1782.383
                                          (5.83%)                                (5.85%)

MUNICIPAL MONEY MARKET FUND                                                            (3.9753)
Inception date (11/10/93)                     N/A                        1000(1+ .029672)= 1123.264
                                                                                 (2.97%)

U.S. GOVERNMENT MONEY                                                                  (5.6685)
MARKET FUND                                   N/A                        1000(1+ .042422)= 1260.070
Inception date (3/2/92)                                                          (4.24%)
</TABLE>

<PAGE>   5



            MONEY MARKET FUNDS - FOR THE 7 DAY PERIOD ENDED 10/31/97

<TABLE>
<CAPTION>
PLATINUM CLASS                               CURRENT YIELD                             EFFECTIVE YIELD
- - --------------                               -------------                             ---------------
<S>                                          <C>                                       <C>   
MONEY MARKET FUND                            (.0009249342 x (365/7)) = 4.82%           ((.0009249342 + 1)(365/7) -1) = 4.94%
MONEY MARKET MILEAGE FUND                    (.0008959967 x (365/7)) = 4.67%           ((.0008959967 + 1)(365/7) -1) = 4.78%
MUNICIPAL MONEY MARKET FUND                  (.0005357551 x (365/7)) = 2.79%           ((.0005357551 + 1)(365/7) -1) = 2.83%
U.S GOVERNMENT MONEY MARKET FUND             (.0008904009 x (365/7)) = 4.64%           ((.0008904009 + 1)(365/7) -1) = 4.75%
</TABLE>



                  MUNICIPAL MONEY MARKET FUND - PLATINUM CLASS-
                       FOR THE 7 DAY PERIOD ENDED 10/31/96

<TABLE>
<CAPTION>
           CURRENT TAX EQUIVALENT YIELD                                 EFFECTIVE TAX EQUIVALENT YIELD
           ----------------------------                                 ------------------------------
           <S>                                                          <C>
           (.0005357551x (365/7))/(1-.396) = 4.63%                      ((.0005357551 + 1)(365/7) -1)/(1-.396) = 4.69%
</TABLE>




<PAGE>   1
                                                                 Exhibit 99.b.18

                       AMERICAN AADVANTAGE MILEAGE FUNDS

                          PLAN PURSUANT TO RULE 18F-3


         The American AAdvantage Mileage Funds (the "Mileage Funds"), on behalf
of its current portfolios and any portfolios that may be established in the
future (referred to hereinafter collectively as the "Funds" and individually as
a "Fund"), hereby adopts this Plan pursuant to Rule 18f-3 under the Investment
Company Act of 1940, as amended (the "1940 Act"), to address the differing
requirements and preferences of potential investors.


A.       CLASSES OFFERED.  The Mileage Funds offer the following class of
shares:

                 1.       MILEAGE CLASS.  Mileage Class shares are offered to
         individuals and certain grantor trusts. Mileage Class shares generally
         require an initial investment of $10,000 and are sold without the
         imposition of any sales charges.  Shares of the Mileage Class,
         however, do incur charges of up to 0.25% of average daily Mileage
         Class net assets under a distribution plan adopted pursuant to Rule
         12b- 1 under the 1940 Act ("12b-1 Plan").  These 12b-1 fees are paid
         to AMR Investment Services, Inc.  ("AMR") as compensation for
         distribution-related expenses or shareholder services.  The primary
         expenses incurred under the 12b-1 Plan are advertising and the
         purchase of American Airlines AAdvantage travel award miles.

         In addition, the American AAdvantage Money Market Mileage Fund also
offers the following class of shares:

                 2.       PLATINUM CLASS.  Platinum Class shares are offered to
         individuals and certain grantor trusts that are clients of certain
         broker-dealers.  Platinum Class shares generally require an initial
         investment of $1,000 by an individual client and are sold without the
         imposition of any sales charges.  Shares of the Platinum Class,
         however, do incur charges of up to 0.25% of average daily Platinum
         Class net assets under a Rule 12b-1 plan.  These 12b-1 fees are paid
         to AMR as compensation for distribution- related expenses or
         shareholder services.  Platinum Class shares also are subject to an
         Administrative Services Plan, pursuant to which AMR is obligated to
         provide or oversee the



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         provision of administrative services to the Platinum Class including,
         but not limited to, payments of fees for record maintenance,
         forwarding shareholder and Fund communications to the shareholders,
         and aggregating and processing orders for the purchase and redemption
         of Platinum Class shares.  As compensation for these services, AMR
         receives a fee of up to 0.55% on an annualized basis of the average
         daily net assets of the Platinum Class of the Funds.


B.       EXPENSES.        The expenses of the Funds that cannot be attributed
to any one Fund generally are allocated to each Fund based on the relative net
assets of the Funds.  Certain expenses that may be attributable to a particular
Fund, but not a particular Class, are allocated based on the relative daily net
assets of that Class.  Finally, certain expenses may be attributable to a
particular Class of shares of a Fund ("Class Expenses").  Class Expenses are
charged directly to the net assets of the particular Class and, thus, are borne
on a pro rata basis by the outstanding shares of that Class.

         Examples of Class Expenses may include: (1) 12b-1 fees, (2) transfer
agent fees identified as being attributable to a specific Class, (3)
stationery, printing, postage, and delivery expenses related to preparing and
distributing materials such as shareholder reports, prospectuses, and proxy
statements to current shareholders of a Class, (4) Blue Sky registration fees
incurred by a Class, (5) Securities and Exchange Commission registration fees
incurred by a Class, (6) expenses of Administrative Services Plans and other
administrative personnel and services as required to support the shareholders
of a Class, (7) trustees' fees or expenses incurred as a result of issues
relating to one Class, (8) accounting expenses relating solely to one Class,
(9) auditors' fees, litigation expenses, and legal fees and expenses relating
to a Class, and (10) expenses incurred in connection with shareholders meetings
as a result of issues relating to one Class.


C.       CLASS DIFFERENCES.  Other than the differences as a result of the
Platinum Class Administrative Services Plan (as discussed above), there are no
material differences in the services offered each Class.


D.       EXCHANGE FEATURES.  Exchanges are not permitted between different
Classes.  However, the Mileage Class offers exchange privileges within the
Class, subject to a minimum of $1,000 exchanged.





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         These exchange privileges may be modified or terminated by a Fund, and
exchanges may only be made into Funds that are legally registered for sale in
the investor's state of residence.

E.       ADDITIONAL INFORMATION.

         This 18f-3 Plan is qualified by and subject to the terms of the then
current prospectus for the applicable Classes; provided, however, that none of
the terms set forth in any such prospectus shall be inconsistent with the terms
of the Classes contained in this Plan.  The prospectus for each Class contains
additional information about that Class and each applicable Fund's multiple
class structure.





Dated:   October 13, 1995.





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