What was found
UNABLE TO MAINTAIN AND CONTROL CABIN ALTITUDE IN AUTO, STBY OR MANUAL. OUTFLOW VALVE SHOWS FULLY CLOSED, HOWEVER, CABIN ALTITUDE CONTINUED TO CLIMB. REMOVED AND REPLACED PRESSURE CONTROLLER AND SAFETY VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNABLE TO MAINTAIN AND CONTROL CABIN ALTITUDE IN AUTO, STBY OR MANUAL. OUTFLOW VALVE SHOWS FULLY CLOSED, HOWEVER, CABIN ALTITUDE CONTINUED TO CLIMB. REMOVED AND REPLACED PRESSURE CONTROLLER AND SAFETY VALVE.