Aviation safety investigations & reports

Cessna 150 G, VH-RNJ, Canberra ACT, 22 February 1983

Investigation number:
Status: Completed
Investigation completed


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During the pre-take off checks the student found the carburettor heat control could be pulled out further than usual and that there was no rpm drop associated with the application of hot air. On take-off the aircraft was slow to accelerate. It became airborne and was observed to enter a gentle right turn. A wing dropped and the aircraft impacted the ground. Investigation revealed that due to excessive wear, the carburettor heat control cable had failed at the attach point with the actuating bellcrank. The air hose between the muffler and the carburettor hot air box had collapsed internally. The combination of the carburettor heat control failure in the "hot" position and the obstruction of the alternate air source led to the loss of engine power during take-off. Shortly afterwards the aircraft stalled over flat open country.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 22 February 1983   Investigation status: Completed  
Time: 735    
Location: Canberra    
State: Australian Capital Territory    
Release date: 14 October 1985   Occurrence category: Accident  
Report status: Final   Highest injury level: Serious  

Aircraft details

Aircraft details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 150  
Aircraft registration VH-RNJ  
Type of operation Flying Training  
Damage to aircraft Substantial  
Departure point Canberra ACT  
Departure time 0735  
Destination Canberra ACT  
Last update 01 April 2011