What was found
ELECTRICAL ODOR NOTED ON DESCENT. SUSPECTED COCKPIT PAC BECAUSE IT WAS DIFFICULT TO SET TEMP & HOLD IN AUTO OR MANUAL. SELECTED COCKPIT PAC TO OFF & ODOR DISSIPATED. REMOVED BAD COCKPIT TURBO COMPRESSOR PN 738284-33, SN & INSTALLED CRS SI3R842L. REPAIRED TURBO COMPRESSOR PN 738384-33 & SN 9611062A. SERVICED ENVIRONMENTAL CONTROL UNIT, OPERATIONS CHECKED NORMAL. ALL WORK DONE IAW 750 MM CHAPTER 21-51-00. COMPLIED WITH TASK CARD TC-750-21-12801 IMR 1, OPERATIONS CHECKED GOOD, LEAK CHECKED NORMAL.