SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549



                                    Form 8-K


                                 CURRENT REPORT



                     Pursuant to Section 13 or 15(d) of the

                         Securities Exchange Act of 1934




                                December 30, 2002
               --------------------------------------------------
               (Date of Report - Date of earliest event reported)





                             KERR-McGEE CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


      Delaware                1-16619                73-1612389
   --------------     ------------------------     ------------------
     (State of        (Commission File Number)       (IRS Employer
   Incorporation)                                  Identification No.)



                  Kerr-McGee Center
               Oklahoma City, Oklahoma                  73125
       ----------------------------------------       ----------
       (Address of principal executive offices)       (Zip Code)



                                 (405) 270-1313
                         -------------------------------
                         (Registrant's telephone number)




Item 9.   Regulation FD Disclosure
               On  December  30,  2002,  Kerr-McGee  Corporation  issued a press
          release  announcing  that it will  take a  special  after-tax  noncash
          charge of approximately $385 million during the fourth quarter for the
          estimated  costs  related  to  impairments  for the  Leadon  field and
          various other fields in the United Kingdom and the Gulf of Mexico. The
          press release is attached  hereto as an exhibit and is incorporated by
          reference herein.

Item 7.   Financial Statements, Pro Forma Financial Information and Exhibits

          (c) Exhibits

          99.1 Press Release dated December 30, 2002

                                   SIGNATURES

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                                 KERR-MCGEE CORPORATION


                                         By:     (John M. Rauh)
                                                 -----------------------------
                                                 John M. Rauh
                                                 Vice President and Controller

Dated: December 30, 2002