As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A SMALL FIRE INSIDE NR 2 OVEN OCCURRED DURING CRUISE OF FLT 5118. CABIN CREW EXTINGUISHED THE FIRE USING A HALON FIRE EXTINGUISHER. NO OTHER EMERGENCY PROCEDURES WERE REQUIRED. SOURCE WAS UNDETERMINED. IT IS SUSPECTED TO BE COMBUSTIBLE MATERIAL IN OR ON A FOOD CARRIER. OVEN WAS REPLACED AS PRECAUTION AND SENT OUT FOR SHOP CHECK. STATUS OPEN PENDING SHOP REPORT.