What was found
JFK INFLIGHT T40/12APR FLIGHT ATTENDANT REPORTED LOUD NOISE UNDER BUSINESS CLASS GALLEY FOLLOWED BY VIBRATION AND SMOKE IN CABIN. LANDED JFK WITHOUT INCIDENT. FOUND LEFT HAND AIR CYCLE MACHINE SEIZED. REPLACED LEFT HAND AIR CYCLE MACHINE. ALSO REPLACED A PRECAUTION LEFT HAND LOW LIMIT VALVE AND LEFT HAND TEMPERATURE CONTROL VALVE. SYSTEM GROUND CHECKED NORMAL OPERATION. (CLOSED)