<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS FINANCIAL DATA SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE CONSOLIDATED FINANCIAL STATEMENTS OF WESTOWER CORPORATION FOR THE SEVEN
MONTH TRANSITION PERIOD ENDED SEPTEMBER 30, 1998 AND CONSTITUTES A RESTATED
FINANCIAL DATA SCHEDULE WITH RESPECT TO THE CONSOLIDATED FINANCIAL STATEMENTS
FOR THE FISCAL YEARS ENDED FEBRUARY 28, 1998 AND 1997 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   7-MOS                   12-MOS                   12-MOS
<FISCAL-YEAR-END>               SEP-30-1998<F1>         FEB-28-1998<F1>         FEB-28-1997<F1>
<PERIOD-START>                  MAR-01-1998             MAR-01-1997             MAR-01-1996
<PERIOD-END>                    SEP-30-1998             FEB-28-1998             FEB-28-1997
<CASH>                                9,331                   7,206                   7,131
<SECURITIES>                              0                       0                       0
<RECEIVABLES>                        13,289                   7,112                   4,905
<ALLOWANCES>                              0                       0                       0
<INVENTORY>                           2,151                   1,140                     201
<CURRENT-ASSETS>                     32,228                  18,557                  13,238
<PP&E>                                9,136                   5,779                   3,395
<DEPRECIATION>                        1,562                   1,458                     688
<TOTAL-ASSETS>                       62,294                  25,057                  16,003
<CURRENT-LIABILITIES>                17,578                  11,998                  11,330
<BONDS>                              17,410                     794                     822
<PREFERRED-MANDATORY>                     0                       0                       0
<PREFERRED>                               0                       0                     450
<COMMON>                                 70                      61                      48
<OTHER-SE>                           26,693<F2>              12,658<F3>               3,896<F4>
<TOTAL-LIABILITY-AND-EQUITY>         62,294                  25,057                  16,003
<SALES>                                   0                       0                       0
<TOTAL-REVENUES>                     31,944                  41,662                  46,091
<CGS>                                     0                       0                       0
<TOTAL-COSTS>                        23,858                  29,508                  33,936
<OTHER-EXPENSES>                      5,863                   7,709                   8,100
<LOSS-PROVISION>                          0                       0                       0
<INTEREST-EXPENSE>                      771                     129                      72
<INCOME-PRETAX>                       1,580                   4,569                   4,085
<INCOME-TAX>                            351                   1,633                     636
<INCOME-CONTINUING>                   1,229                   2,936                   3,430
<DISCONTINUED>                            0                       0                       0
<EXTRAORDINARY>                           0                       0                       0
<CHANGES>                                 0                       0                       0
<NET-INCOME>                          1,229                   2,936                   3,430
<EPS-PRIMARY>                          0.19                    0.56                    0.72
<EPS-DILUTED>                          0.16                    0.52                    0.72
<FN>
<F1>The summary financial information contained in this schedule has been
restated to reflect the acquisitions during the Transition Period ended
September 30, 1998 of MJA Communications Corp. and Standby Services, Inc. which
were accounted for as poolings-of-interests.
<F2>Other equity of $26,693,000 at September 30, 1998 is comprised of Additional
paid-in Capital of $22,610,000, Accumulated Other Comprehensive Income of
$(581,000) and Retained Earnings of $4,664,000.
<F3>Other equity of $12,658,000 at February 28, 1998 is comprised of Additional
paid-in Capital of $8,672,000, Accumulated Other Comprehensive Income of
$(67,000) and Retained Earnings of $4,053,000.
<F4>Other equity of $3,896,000 at February 28, 1997 is comprised of Additional
paid-in Capital of $(48,000), Accumulated Other Comprehensive Income of $27,000
and Retained Earnings of $3,917,000.
</FN>
        

</TABLE>