What was found
F/A NOTICED A BURN ODOR IN AFT GALLEY THAT WENT AWAY WHEN GALLEY FLOOR HEAT WAS TURNED OFF. NO BURNING ODOR WHEN ARRIVED ON GATE. TURNED ON FLOOR HEATERS AT FULL HOT, NO BURNING ODOR. COULD NOT DUPLICATE, AS PRECAUTION FWD TO DEFERRAL IAW MEL 25-27-1, M-PROCEDURES C/W.