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SIGNATURE THOMAS E. JENKINS
TITLE ASSISTANT SECRETARY
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<EXPENSE-RATIO> .11
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001001641
<NAME> AMR INVESTMENT SERVICES MUNICIPAL MONEY MARKET PORTFOLIO
<SERIES>
<NUMBER> 280
<NAME> AMR INVESTMENT SERVICES MUNICIPAL MONEY MARKET PORTFOLIO
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 2-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> NOV-01-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 107300
<INVESTMENTS-AT-VALUE> 107300
<RECEIVABLES> 5793
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 113095
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18
<TOTAL-LIABILITIES> 18
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 0
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 113077
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 758
<OTHER-INCOME> 0
<EXPENSES-NET> 27
<NET-INVESTMENT-INCOME> 731
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 731
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (7067)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 20
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 27
<AVERAGE-NET-ASSETS> 118557
<PER-SHARE-NAV-BEGIN> 0
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 0
<EXPENSE-RATIO> .14
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001001641
<NAME> AMR INVESTMENT SERVICES US GOVERNMENT MONEY MARKET PORTFOLIO
<SERIES>
<NUMBER> 270
<NAME> AMR INVESTMENT SERVICES US GOVERNMENT MONEY MARKET PORTFOLIO
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 2-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> NOV-01-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 177474
<INVESTMENTS-AT-VALUE> 177474
<RECEIVABLES> 1085
<ASSETS-OTHER> 26720
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 205279
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 40
<TOTAL-LIABILITIES> 40
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 0
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 205239
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1914
<OTHER-INCOME> 0
<EXPENSES-NET> 41
<NET-INVESTMENT-INCOME> 1873
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 1873
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (5924)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 33
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 41
<AVERAGE-NET-ASSETS> 197815
<PER-SHARE-NAV-BEGIN> 0
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 0
<EXPENSE-RATIO> .12
</TABLE>
ITEM 77B ACCOUNTANT'S REPORT ON INTERNAL CONTROL
To the Shareholders and
Board of Trustees of
AMR Investment Services Trust
In planning and performing our audits of the financial statements of the AMR
Investment Services Trust (comprised of the Money Market, Municipal Money
Market, and the U.S. Government Money Market Portfolios) (collectively, the
"Portfolios") for the period ended December 31, 1999, we considered their
internal control, including control activities for safeguarding securities, to
determine our auditing procedures for the purpose of expressing our opinion on
the financial statements and to comply with the requirements of Form N-SAR, not
to provide assurance on internal control.
The management of the Portfolios is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
internal control. Generally, internal controls that are relevant to an audit
pertain to the Portfolios' objective of preparing financial statements for
external purposes that are fairly presented in conformity with generally
accepted accounting principles. Those internal controls include the
safeguarding of assets against unauthorized acquisition, use or disposition.
Because of inherent limitations in internal control, misstatements due to errors
or fraud may occur and not be detected. Also, projections of any evaluation of
internal control to future periods are subject to the risk that internal control
may become inadequate because of changes in conditions, or that the degree of
compliance with the policies or procedures may deteriorate.
Our consideration of internal control would not necessarily disclose all matters
in internal control that might be material weaknesses under standards
established by the American Institute of Certified Public Accountants. A
material weakness is a condition in which the design or operation of one or more
of the specific internal control components does not reduce to a relatively low
level the risk that errors or fraud in amounts that would be material in
relation to the financial statements being audited may occur and not be detected
within a timely period by employees in the normal course of performing their
assigned functions. However, we noted no matters involving internal control,
including control activities for safeguarding securities, and its operation that
we consider to be material weaknesses as defined above at December 31, 1999.
This report is intended solely for the information and use of management and
Board of Trustees of the Portfolios and the Securities and Exchange Commission
and is not intended to be and should not be used by anyone other than these
specified parties.
/s/ERNST & YOUNG LLP
Dallas, Texas
February 11, 2000
