As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING EARLY PORTION OF DESCENT SMELLED AN ACRID, BURING OIL SMELL FOR ABOUT 3 MINUTES AFTER WHICH IT SLOWLY DISSIPATED. MAINTENANCE PEFORMED SMOKE ODOR FUMES INITIAL TROUBLESHOOTING IAW JOB CARD 05-96-70. FOUND OVEN TO BE SOURCE OF ODOR. REMOVED AND REPLACED FWD GALLEY OVEN IAW ESO 8922, CMM 25-31-40. OPERATIONAL CHECK OK. NO ODOR NOTED.