What was found
AFTER TAKEOFF FROM PHX, CABIN UNABLE TO MAINTAIN PRESSURE. DIVERTED INTO MCI. MTC REMOVED AND REPLACED RIGHT PRESSURE REGULATOR VALVE. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF FROM PHX, CABIN UNABLE TO MAINTAIN PRESSURE. DIVERTED INTO MCI. MTC REMOVED AND REPLACED RIGHT PRESSURE REGULATOR VALVE. (X)