As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN, F/A AND PILOTS SMELLED ODOR REAR GALLEY. PULLED ALL CB AND REMOVED OVENS ODOR CONTINUES. ALL AFT GALLEY OVENS REPLACED. OVEN 411 - ELECTRICAL ODOR FAN SQUEALS, OVEN 412 - BURNT MATERIAL ON HEATING COIL, OVEN 413 - REPLACED AS PRECAUTION.