As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LHR - FLT 104 - EN ROUTE JFK/LHR - DURING CRUISE, NR 1 OVEN NOTED WITH BURNED FOOD ON CONVECTION FAN RESULTING IN SLIGHT SMOKING DURING OVEN OPERATION. AIRCRAFT PROCEEDED TO LHR AND LANDED WITHOUT INCIDENT. CLEANED FOOD RESIDUE FROM NR 1 OVEN CONVECTION FAN. SYSTEM GROUND CHECKED NORMAL OPERATION WITH NO SMOKE NOTED. (M)