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The helicopter was being repositioned near a cliff edge. As it was lifted to a one metre hover a gust of wind tilted the tail down and the pilot felt a 'thump'. He initially raised the collective control but the helicopter began to rotate rapidly to the right. The throttle was closed and the collective control lowered to prevent the helicopter from falling over the cliff edge. The helicopter landed heavily, after rotating through 270 degrees, bending and breaking the skid crosstubes. Inspection revealed that the tail rotor guard had failed when it contacted the ground. It was then struck by the tail rotor causing the tail rotor drive shaft to fail at the main transmission.
Download Final Report
[ Download PDF: 12KB]
 
 
 
 
General details
Date: 12 May 1993 Investigation status: Completed 
Time: 12:30 CST Investigation type: Occurrence Investigation 
 Occurrence type:Ground strike 
 Occurrence class: Operational 
Release date: 28 March 1994 Occurrence category: Accident 
Report status: Final  
 
Aircraft details
Aircraft manufacturer: Bell Helicopter Co 
Aircraft model: 47J-2A 
Aircraft registration: VH-KHZ 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Head of Bight SA
Destination:Head of Bight SA
 
 
 
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Last update 23 July 2015