As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK IN MANUAL OR AUTO, PACK OVER TEMPS, CREW REPORTED BURNING SMELL. INSPECTED DUCTING IN AFT EQUIPMENT BAY, NO LEAKS NOTED. NO BURNING SMELL IN AFT EQUIPMENT BAY OR COCKPIT, REF LP 261965 4 FOR MEL. R & R THE NR 1 ACM IAW AMM 21-51-10. LEAK & OPERATIONS CHECK COMPLIED WITH. REMOVED PLACARD & FROM MEL.