What was found
(CAN) AFTER TAKEOFF AIRCRAFT WOULD NOT PRESSURIZE IN STANDBY MODE. FLIGHT RETURNED.CABIN PRESSURZATION CONTROLLER REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) AFTER TAKEOFF AIRCRAFT WOULD NOT PRESSURIZE IN STANDBY MODE. FLIGHT RETURNED.CABIN PRESSURZATION CONTROLLER REPLACED.