As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A CARDBOARD FOOD BOX IN AFT OVEN NR 5 IGNITED BRIEFLY AND WAS QUICKLY EXTINGUISHED. DOOR 4R FIRE EXTINGUISHER WAS USED OR SEAL BROKEN. MAINTENANCE INSPECTED OVEN AND NO PROBLEMS WERE FOUND. THE MISSING PIN FOR FIRE EXTINGUISHER WAS REPLACED AND SECURED PER LP C07100609 (2010-D0825)(DL75E101806).