What was found
ODOR OF WARM FIBERGLASS OR PLASTIC DETECTED BEFORE PUSHBACK AND SEVERAL TIMES DURING FLIGHT IN B-ZONE FWD. F/A IFE-OFF, STILL HAD ODOR. PERFORMED FIM TASK; 21-00-00-810-808, SMOKE OR FUMES IN CABIN, SOURCE UNKNOWN. OPERATED APU, PACKS, OPERATED ENGINES, OPERATED ALL GALLEY EQUIPMENT, COULD NOT DUPLICATE ODORS. NO TROUBLE FOUND.