As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO COOL THE CABIN. *S/D* THE AIR CYCLE MACHINE AND VARIOUS PACK BLEED DUCT SEALS WERE LEAKING CAUSING POOR PERFORMANCE OF THE LEFT HAND AIR CONDITIONING PACK. THE AIR CYCLE MACHINE (10HM1) WAS CHANGED ALONG WITH THE FLOW CONTROL VALVE (11HB).