Aviation safety investigations & reports

Fairchild Industries Inc SA227-DC, VH-WBA

Investigation number:
Status: Completed
Investigation completed


The Australian Transport Safety Bureau did not conduct an on-scene investigation of this occurrence. The report presented below was derived from information supplied to the Bureau.

While en route from the Jundee mine site to Perth, cruising at FL220, the crew of the Fairchild Industries Inc Metro 23, registration VH-WBA, saw the cabin altitude gauge indication climbing at a rate of about 8,000 ft/minute. The crew, suspecting a pressurisation failure, donned oxygen masks and directed the passengers to do the same. They contacted Melbourne Centre air traffic control and received a clearance to immediately descend to 14,000 ft. Once level at the amended cruise altitude, the use of passenger oxygen masks was discontinued and the flight proceeded to Perth.

Company maintenance investigation could not detect the reason for the pressurisation fault. Extensive trouble shooting was carried out in accordance with the manufacturer's maintenance manual, followed by ground runs and a test flight. The aircraft and its systems performed normally.

The aircraft was placed on a maintenance watch and returned to service where it has since operated without incident.

General details
Date: 07 July 2004   Investigation status: Completed  
Time: 1828 hours WST    
Location   (show map): 463 km NW Perth, Aero.    
State: Western Australia   Occurrence type: Air/pressurisation  
Release date: 29 September 2004   Occurrence category: Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Fairchild Industries Inc  
Aircraft model SA227  
Aircraft registration VH-WBA  
Serial number DC-883B  
Type of operation Charter  
Damage to aircraft Nil  
Departure point Jundee, WA  
Departure time 1710 hours WST  
Destination Perth, WA  
Crew details
Role Class of licence Hours on type Hours total
Pilot-in-Command ATPL 2276.0 4543
Last update 13 May 2014