What was found
LEFT PACK TEMP CLIMBS UNCONTROLLABLY AND FILLED THE CABIN WITH SMOKE. (FLT 5212) REPLACED LEFT PACK FLOW CONTROL VALVE AND LEFT AIR CYCLE MACHINE IAW AMM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT PACK TEMP CLIMBS UNCONTROLLABLY AND FILLED THE CABIN WITH SMOKE. (FLT 5212) REPLACED LEFT PACK FLOW CONTROL VALVE AND LEFT AIR CYCLE MACHINE IAW AMM.