What was found
AIRCRAFT FAILED TO PRESSURIZE NORMALLY ON TAKEOFF. REMOVED AND REPLACED OUTFLOW VALVE. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT FAILED TO PRESSURIZE NORMALLY ON TAKEOFF. REMOVED AND REPLACED OUTFLOW VALVE. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.