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The helicopter was being used in a program of disease eradication in cattle. After operating for about one hour, the pilot flew to a boat anchored in the river and hovered alongside it while signalling to the crew that the aircraft would return in about two hours. As the helicopter left the hover it was climbed to approximately 60 feet in a left turn through 270 degrees. The aircraft was then descended to an unnecessarily low altitude while gaining speed. Shortly afterwards, as the aircraft approached the bank of the river, the pilot realised that the aircraft was not responding to control inputs as he had expected. He applied more collective control in an effort to avoid flying into the water, but the rotor overpitched and the aircraft struck the water at about 40 knots. No defect was found that would have prevented normal operation of the flight controls or engine.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 03 July 1986 Investigation status: Completed 
Time: 730  
Location:Coleman River (270 km South Weipa) Investigation type: Occurrence Investigation 
State: Queensland Occurrence type: Collision with terrain 
Release date: 01 May 1987 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: Serious 
Aircraft details
Aircraft manufacturer: Bell Helicopter Co 
Aircraft model: 47 
Aircraft registration: VH-ANG 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Destroyed 
Departure point:Kowanyama QLD
Departure time:0730
Destination:Kowanyama QLD
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