As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN TEMPS STARTED CLIMBING UP 85, 83, 87 & MUCH HOTTER IN BACK FROM ROW 30. TURNED OFF MASTER TRIM VLV, STILL TEMP HIGH ON ECS PAGE. LT PACK 188 TO 189 DEGREES & RT PACK -62 DEGREES, STILL WARM AIR COMING TO FLIGHT DECK. FOUND LT PACK RAM AIR DOOR ACTUATOR NOT HOLDING THE DOOR IN COMMANDED POSITION. LT PACK DOOR STAYS IN CLOSED POSITION. REPLACED DOOR ACTUATOR, SYS CHECKED NORMAL AMM 21-53-03.