What was found
SMOKE IN CABINS, RTFL. NO VISIBLE SMOKE ONLY PLASTIC BURNING SMELL. NO SMELL IN FIRST CLASS. NO FIRE NOTED AND SMELL WAS COMPLETELY GONE AFTER LANDING. RAN BOTH ENGINES WITH PACKS ON HOT AND COLD. RAN OVEN'S, COFFEEMAKERS, HOT PLATES AND CHILLERS. CKD CABIN LIGHTS, READING LIGHTS AND EMERGENCY LIGHTS. CKD PCU(S) AND VIDEO SYS. CK E&E COMPT'S. COULD NOT DUPLICATE.