As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF CREW NOTED LIMITED AIRFLOW FROM THE AIR CONDITIONING PACKS AND NO PRESSURIZATION. AIRCRAFT RETURNED TO BASE. INSPECTION FOUND A BLEED SENSE LINE CHAFED AND WORN THROUGH AT A CLAMP LOCATION. THE LINE WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.