Aviation safety investigations & reports

Cessna 172M, VH-WYO, 10km West of Mt Surprise QLD, 4 June 1986

Investigation number:
Status: Completed
Investigation completed


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The aircraft was being flown at about 900 feet above ground level while the pilot spotted horses for a programmed muster. When the pilot attempted to increase engine power, he found that there was no response to throttle movement. Pumping the throttle resulted in a decrease in power to idle. The pilot was unable to correct the situation and selected the best available area for landing. This area was covered with small basalt boulders. On touchdown the left wing struck a small dead tree and the propeller struck the ground before the aircraft came to rest. It took the pilot some time to exit the cabin of the aircraft because the doors had been jammed during impact. An inspection of the aircraft revealed that the outer throttle cable had come loose from the clamp at the carburettor. This allowed power to be reduced but not increased.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 04 June 1986   Investigation status: Completed  
Time: 0946    
Location: 10km West of Mt Surprise    
State: Queensland    
Release date: 14 May 1987   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 172  
Aircraft registration VH-WYO  
Type of operation Aerial Work  
Damage to aircraft Substantial  
Departure point Mt Surprise QLD  
Departure time 0755(Aprx)  
Destination Mt Surprise QLD