As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT FA REPORTED THAT THE JUMP SEAT AND BULKHEAD DOOR GETS PROGRESSIVELY HOTTER DURING FLIGHT. SEAT BECOMES UNCOMFORTABLY HOT BY THE END OF THE FLIGHT. FOUND THE LT PACK PLENUM CRACKED. REMOVED AND REPLACED THE LT RAM AIR INLET PLENUM IAW AMM 21-29-21. OPS & LEAK CHECKED OK.