As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MHT - FLT 353 - AFTER TAKEOFF THE LEFT AIR CONDITIONING PACK OVERHEATED PRODUCING SMOKE IN THE COCKPIT AND PASSENGER CABIN. THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE MEL'D THE LEFT AIR CONDITIONING PACK. LATER THE LEFT CABIN TEMPERATURE CONTROL VALVE WAS REPLACED. (M)