As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO TEMP NOT CONTROLLING CABIN TEMPERATURE. ACFT GROUNDED. REPLACED V146 TRIM AIR PRESSURE REGULATING AND SHUTOFF VALVE MM 21-62-01. REPAIR CONFIRMATION PASSES IAW FIM 21-61, TASK 864. ABLE TO CONTROL ALL 3 ZONES INDEPENDENTLY AND IN BOTH DIRECTIONS.