As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING PLASTIC ODOR IN THE REAR GALLEY. COMPLETED SMOKE FUMES CHECK LIST. F/A NOTICED OVEN NR 5 ON AFT GALLEY SUSPECTED OF ODORS TESTED ALL OVENS TO ON AT 350F FOR 15 MIN. ALL OVENS WORKING FINE, NO BURNING PLASTIC ODORS NOTED. ETOPS CATEGORY 'F': ANY OTHER EVENT DETRIMENTAL TO ETOPS.