What was found
AFTER TAKEOFF, AUTO PRESSURIZATION SYSTEM FAILED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED RELAY R2-55 AND OUTFLOW VALVE LINKAGE. OPERATIONAL CHECK OK AND AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF, AUTO PRESSURIZATION SYSTEM FAILED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED RELAY R2-55 AND OUTFLOW VALVE LINKAGE. OPERATIONAL CHECK OK AND AIRCRAFT RETURNED TO SERVICE.