What was found
PACK AUTO CONTROL DRIVES TEMP TO FULL COLD -15C. REMOVED & REPLACED THE TRIM AIR PRESSURE REGULATOR VALVE OPS & LEAK CHECKED GOOD IAW AMM 21-61-06-404-020.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PACK AUTO CONTROL DRIVES TEMP TO FULL COLD -15C. REMOVED & REPLACED THE TRIM AIR PRESSURE REGULATOR VALVE OPS & LEAK CHECKED GOOD IAW AMM 21-61-06-404-020.