What was found
(CAN) CREW PERFORMED AIR TURNBACK AFTER TAKEOFF, AFTER UNCOMMANDED DEPRESSURIZATION WITH OXYGEN MASKS DEPLOYMENT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) CREW PERFORMED AIR TURNBACK AFTER TAKEOFF, AFTER UNCOMMANDED DEPRESSURIZATION WITH OXYGEN MASKS DEPLOYMENT.