Aviation safety investigations & reports

Depressurisation, 140 NM south of Alice Springs, NT, 6 February 2007, Beech Aircraft Corporation 300, VH-MLG

Investigation number:
Status: Completed
Investigation completed


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On 6 February 2007, at approximately 1130 Central Summer Time, while operating a passenger charter flight from Melbourne, Vic. to Alice Springs, NT, the pilot of a Beech Aircraft Corporation 300 aircraft, registered VH-MLG, reported feeling his ears 'pop' while at flight level 280 and the aircraft rapidly depressurised.  There were eight persons on board the aircraft.

The pilot reported looking at the aircraft pressurisation panel and noticing that the needles were rapidly moving.  The passenger seated in the right seat (also a pilot) called to the pilot to 'put on oxygen'.  While donning his oxygen mask, the passenger reported that the oxygen hose blew out of the mask when pressurised. He managed to reattach the hose and remain on oxygen.

After checking that the passengers had donned their oxygen masks, the pilot advised air traffic control of the depressurisation and commenced an emergency descent. The aircraft subsequently landed at Alice Springs with no injuries reported.
The pilot reported that it is possible that, while adjusting his seat position prior to top of descent, he inadvertently activated the switch to the DUMP position.

Download Final Report
[Download  PDF: 621KB]
General details
Date: 06 February 2007   Investigation status: Completed  
Time: 1100 CSuT    
Location   (show map): 140 NM south of Alice Springs    
State: Northern Territory    
Release date: 26 May 2008   Occurrence category: Serious Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Beech Aircraft Corp  
Aircraft model 300  
Aircraft registration VH-MLG  
Serial number FL-389  
Type of operation Charter  
Damage to aircraft Nil  
Departure point Melbourne, Vic  
Destination Alice Springs, NT  
Last update 18 April 2018