WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>      6
               
<CIK>          0000764860
               
<NAME>  FLAGSHIP MISSOURI DOUBLE TAX EXEMPT FUND
                                     
<SERIES>
                                     
<NUMBER>                             121
                                     
<NAME>                               CLASS A
                                     
<MULTIPLIER>                         1
                                     
       
                                     
<S>                                  <C>
<PERIOD-TYPE>                       6-MOS
                                    
<FISCAL-YEAR-END>                   MAY-31-1997
                                    
<PERIOD-START>                      JUN-01-1996
                                    
<PERIOD-END>                        NOV-31-1996
                                    
<INVESTMENTS-AT-COST>               208,277,875
                                    
<INVESTMENTS-AT-VALUE>              220,602,604
                                    
<RECEIVABLES>                       5,594,740
                                    
<ASSETS-OTHER>                      573,557
                                    
<OTHER-ITEMS-ASSETS>                0
                                    
<TOTAL-ASSETS>                      226,770,901
                                    
<PAYABLE-FOR-SECURITIES>            2,475,410
                                    
<SENIOR-LONG-TERM-DEBT>             0
                                    
<OTHER-ITEMS-LIABILITIES>           1,212,007
                                    
<TOTAL-LIABILITIES>                 3,687,417
                                    
<SENIOR-EQUITY>                     0
                                    
<PAID-IN-CAPITAL-COMMON>            213,955,533
                                    
<SHARES-COMMON-STOCK>               19,826,875
                                    
<SHARES-COMMON-PRIOR>               20,244,922
                                    
<ACCUMULATED-NII-CURRENT>           0
                                    
<OVERDISTRIBUTION-NII>              (42,162)
                                    
<ACCUMULATED-NET-GAINS>             (3,154,616)
                                    
<OVERDISTRIBUTION-GAINS>            0
                                    
<ACCUM-APPREC-OR-DEPREC>            12,324,729
                                    
<NET-ASSETS>                        223,083,484
                                    
<DIVIDEND-INCOME>                   0
                                    
<INTEREST-INCOME>                   6,770,498
                                    
<OTHER-INCOME>                      0
                                    
<EXPENSES-NET>                      (1,021,750)
                                    
<NET-INVESTMENT-INCOME>             5,748,748
                                    
<REALIZED-GAINS-CURRENT>            1,429,711
                                    
<APPREC-INCREASE-CURRENT>           6,711,956
                                    
<NET-CHANGE-FROM-OPS>               13,890,415
                                    
<EQUALIZATION>                      0
                                    
<DISTRIBUTIONS-OF-INCOME>           (5,637,308)
                                    
<DISTRIBUTIONS-OF-GAINS>            0
                                    
<DISTRIBUTIONS-OTHER>               0
                                    
<NUMBER-OF-SHARES-SOLD>             710,810
                                    
<NUMBER-OF-SHARES-REDEEMED>         (1,423,117)
                                    
<SHARES-REINVESTED>                 294,260
                                    
<NET-CHANGE-IN-ASSETS>              3,347,404
                                    
<ACCUMULATED-NII-PRIOR>             0
                                    
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<INTEREST-EXPENSE>                  0
                                    
<GROSS-EXPENSE>                     1,198,444
                                    
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<PER-SHARE-NAV-BEGIN>               10.51
                                    
<PER-SHARE-NII>                     0.28
                                    
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<PER-SHARE-DIVIDEND>                (0.28)
                                    
<PER-SHARE-DISTRIBUTIONS>           0.00
                                    
<RETURNS-OF-CAPITAL>                0.00
                                    
<PER-SHARE-NAV-END>                 10.90
                                    
<EXPENSE-RATIO>                     0.92
                                    
<AVG-DEBT-OUTSTANDING>              100,487
                                    
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</TABLE>