What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On climbout msp auto pressurization failed and outflow valve stuck open. Crew selected manual and was able to get back auto mode and regained auto pressurization. At approximetly 310 cabin climbed rapidly and was unresponsive in auto mode for both #1 and #2 cabin controllers. Crew selected manual again. Descended to 10,000 ft and return to field. Passenger masks deployed and cabin altitude climbed to 20,000 ft. pressurization system showed system 1 and 2 fault. All crew and passenger masks deployed. Investigation turned over to dala cmo msp/atl
As the FAA filed it
ON CLIMBOUT MSP AUTO PRESSURIZATION FAILED AND OUTFLOW VALVE STUCK OPEN. CREW SELECTED MANUAL AND WAS ABLE TO GET BACK AUTO MODE AND REGAINED AUTO PRESSURIZATION. AT APPROXIMETLY 310 CABIN CLIMBED RAPIDLY AND WAS UNRESPONSIVE IN AUTO MODE FOR BOTH #1 AND #2 CABIN CONTROLLERS. CREW SELECTED MANUAL AGAIN. DESCENDED TO 10,000 FT AND RETURN TO FIELD. PASSENGER MASKS DEPLOYED AND CABIN ALTITUDE CLIMBED TO 20,000 FT. PRESSURIZATION SYSTEM SHOWED SYSTEM 1 AND 2 FAULT. ALL CREW AND PASSENGER MASKS DEPLOYED.INVESTIGATION TURNED OVER TO DALA CMO MSP/ATL
Other reports on N332NW · 1
Matched to the same aircraft by N-number and date.