What was found
AIR RETURN IN RJAA DUE TO CABIN PRESSURE 1 & 2 FAULT. FORWARD OUTFLOW VALVE STUCK FULL OPEN. NO EMERGENCY OR PRIORITY DECLARED. R & R FWD OUTFLOW VALVE ACTUATOR PER AMM 21-31-12-04.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR RETURN IN RJAA DUE TO CABIN PRESSURE 1 & 2 FAULT. FORWARD OUTFLOW VALVE STUCK FULL OPEN. NO EMERGENCY OR PRIORITY DECLARED. R & R FWD OUTFLOW VALVE ACTUATOR PER AMM 21-31-12-04.