As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT WING BODY OVERHEAT LIGHT CAME ON DURING CLIMB RAN PROCEDURE BUT LEFT PACK WOULD NOT HOLD CABIN ALTITUDE CABIN UNDER CONTROL AT 18000 MAX CABIN ALT 9500. FOUND FIBERGLASS PLENUM AT HEAT EXCHANGER BLOWN OUT ON LOWER SEAM ALSO FOUND BOTH HEAT EXCHANGERS CRACKED AT OUTBOARD FLANGE REPLACED BOTH HEAT EXCHANGERS