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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 Investigation type: Occurrence Investigation 
Location:Canberra  
State: Australian Capital Territory  
Release date: 14 October 1985 Occurrence category: Accident 
Report status: Final Highest injury level: Serious 
 
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
 
 
 
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Last update 01 April 2011