What was found
UNABLE TO MAINTAIN CABIN PRESSURE DURING CLIMB. DESCENDED TO 12000 FT. REPLACED PRESSURE REGULATOR SHUTOFF VALVE. AC 05 12/11/99 DFW.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNABLE TO MAINTAIN CABIN PRESSURE DURING CLIMB. DESCENDED TO 12000 FT. REPLACED PRESSURE REGULATOR SHUTOFF VALVE. AC 05 12/11/99 DFW.