As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS REPORTED SMOKE IN THE FORWARD GALLEY AT OVEN START UP. MAINTENANCE CHECKED GALLEY CEILING AND FIXTURES. THE NR 1 OVEN WAS FOUND WITH A PLASTIC SUBSTANCE NEAR THE HEATING COIL. SUBSTANCE WAS CLEANED AND OVEN OPERATED NORMALLY WITH NO ODORS.