As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF PRESSURIZATION. *S/D* THE LEFT HAND PACK TRIPPED OFF, THEN RESET AND TRIPPED OFF AGAIN. THEN THE RIGHT HAND PACK TRIPPED OFF AND WAS RESET. THE LEFT HAND FAN AIR VALVE FAILED AND WAS REPLACED. THE RIGHT HAND FAN AIR VALVE TEMPERATURE SENSOR FAILED AND WAS REPLACED.