As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOTS REPORTED LITTLE TO NO AIRFLOW IN FLT DECK. AIR CONDITIONING PACKS, LT, MAINTENANCE DISCOVERED THAT THE LT PACK, COCKPIT AIR SUPPLY DUCT FROM THE WATER SEPARATOR TO MAIN DUCT HAD DE-BONDED AND SEPARATED CAUSING A LEAK. DUCT REPLACED WITH NEW. PACK FUNCTION CHECK CARRIED OUT. NO FAULTS FOUND. FACTORY INCORPORATED BY MSN, AFH 24956.26, AFC 19686.