<ARTICLE> 5 <CIK> 0000868680 <NAME> AIF 1-D <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> SEP-30-1998 <CASH> 3,614,251 <SECURITIES> 193,786 <RECEIVABLES> 1,309,790 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 5,117,827 <PP&E> 17,929,447 <DEPRECIATION> 8,918,489 <TOTAL-ASSETS> 14,128,785 <CURRENT-LIABILITIES> 569,858 <BONDS> 4,469,113 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 9,827,476 <TOTAL-LIABILITY-AND-EQUITY> 14,128,785 <SALES> 0 <TOTAL-REVENUES> 2,389,930 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 838,875 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 599,660 <INCOME-PRETAX> 474,951 <INCOME-TAX> 0 <INCOME-CONTINUING> 474,951 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 474,951 <EPS-PRIMARY> 0 <EPS-DILUTED> 0