As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OVENS NR 305-306-327-328 HAD TO BE TURNED OFF DUE TO BILLOWING SMOKE. CLEANED PAPER AND DEBRIS FROM OVEN TRAYS. OVEN TRAYS REPLACED BY CATERER. OPERATED ALL OVENS FOR 35 MINUTES. ALL OVEN TEMPERATURE CONTROL AND TIMERS OPERATED NORMAL. OVENS NR 305-306-327-328 OK FOR SERVICE.