What was found
AUTO PRESSURIZATION FAILURE IN FLT. COULD NOT CONTROL CABIN ALT IN ANY PRESSURIZATION MODE. REMOVED AND REPLACED PRESSURE CONTROLLER PER MM 21-31-010-4. OPER CHECK NORM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AUTO PRESSURIZATION FAILURE IN FLT. COULD NOT CONTROL CABIN ALT IN ANY PRESSURIZATION MODE. REMOVED AND REPLACED PRESSURE CONTROLLER PER MM 21-31-010-4. OPER CHECK NORM.