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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-K/A

              ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 1999

                         Commission file number 1-13782

                 WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

                  DELAWARE                               25-1615902
       (State or other jurisdiction of                  (IRS Employer
       incorporation or organization)                Identification No.)

            1001 AIR BRAKE AVENUE
       WILMERDING, PENNSYLVANIA 15148                  (412) 825-1000
  (Address of principal executive offices)     (Registrant's telephone number)

           SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:

            (Title of Class)             (Name of Exchange on which registered)
             --------------               ------------------------------------
COMMON STOCK, PAR VALUE $.01 PER SHARE            NEW YORK STOCK EXCHANGE


        SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT: NONE


     This Amendment to Form 10-K is being filed to amend Exhibit 99 thereto.
    The full text of Exhibit 99 is set forth in this Amendment to Form 10-K.


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