<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM WESTINGHOUSE
AIR BRAKE COMPANY'S CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                           7,487
<SECURITIES>                                         0
<RECEIVABLES>                                  123,100
<ALLOWANCES>                                         0
<INVENTORY>                                    110,966
<CURRENT-ASSETS>                               267,029
<PP&E>                                         236,361
<DEPRECIATION>                                 103,413
<TOTAL-ASSETS>                                 605,612
<CURRENT-LIABILITIES>                          150,157
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           474
<OTHER-SE>                                      12,402
<TOTAL-LIABILITY-AND-EQUITY>                   605,612
<SALES>                                        557,656
<TOTAL-REVENUES>                               557,656
<CGS>                                          374,605
<TOTAL-COSTS>                                  374,605
<OTHER-EXPENSES>                                94,929
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              26,612
<INCOME-PRETAX>                                 60,510
<INCOME-TAX>                                    22,389
<INCOME-CONTINUING>                             38,121
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                  (469)
<CHANGES>                                            0
<NET-INCOME>                                    37,652
<EPS-BASIC>                                       1.48
<EPS-DILUTED>                                     1.45