What was found
STRONG PLASTIC BURNING ODOR IN THE COCKPIT & CABIN AFTER PARKING AT THE GATE. NO VISIBLE SMOKE NOTED. TROUBLESHOT SYS , FOUND GALLEY EXHAUST FAN INOPERATIVE, CONNECTOR DISCONNECTED. RECONNECTED GALLEY EXHAUST FAN CONNECTOR. OPERATIONS CHECKED GOOD. FOUND PAPER & FOAM IN DUCTING AT SEAT 2 CD PSU GASPER. PERFORMED ENG RUNS WITH BLEED AIR & PACKS IAW FORM OPC OF INTERIOR LIGHTING, COULD NOT DUPLICATE ODOR ON THE GND, ALL WORK IAW AMM TASKS 21-23-93, 25-28-01 & 71-00-00. CHECKED RECIRC FILTERS, FOUND NR 1 RECIRC FILTER HOUSING UNATTACHED & MOUNTING BOLTS LAYING ON THE FLOOR. ATTACHED FILTER HOUSING IAW AMM 21-22-10.