What was found
(CAN) AIR TURN-BACK DUE TO PRESSURIZATION - CABIN ALTITUDE WARNING DURING CLIMB. NO MASKS DEPLOYED AND NO EMERGENCY WAS DECLARED. CORRECTIVE ACTION: MAINTENANCE CHANGED RELAY K42 AND OPS CHECKED GOOD. (TC# 20191004005)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) AIR TURN-BACK DUE TO PRESSURIZATION - CABIN ALTITUDE WARNING DURING CLIMB. NO MASKS DEPLOYED AND NO EMERGENCY WAS DECLARED. CORRECTIVE ACTION: MAINTENANCE CHANGED RELAY K42 AND OPS CHECKED GOOD. (TC# 20191004005)