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A witness reported that as the aircraft approached a ridge line about 5 kilometres from the DEPARTURE point he observed a marked "wing wobble". This was then seen to cease briefly, then recommence. Shortly afterwards, the aircraft collided with the top of the ridge line and cartwheeled down the slope before coming to rest against a tree. An inspection of the aircraft did not reveal any fault that may have contributed to the occurrence. At the time of the accident the wind velocity was north-westerly at about 15 knots and thus was blowing across the ridge struck by the aircraft. It is likely that the aircraft, while being flown at a low altitude, was affected by mechanical turbulence in the lee of the ridge line and collided with the ground.

Download Final Report
[ Download PDF: 22KB]
 
 
 
 
General details
Date: 12 August 1986 Investigation status: Completed 
Time: 1141 Investigation type: Occurrence Investigation 
Location:Brady Creek (42 km North Kapunda) Occurrence type:Collision with terrain 
State: South Australia Occurrence class: Operational 
Release date: 12 May 1987 Occurrence category: Accident 
Report status: Final Highest injury level: Fatal 
 
Aircraft details
Aircraft manufacturer: Piper Aircraft Corp 
Aircraft model: PA-25 
Aircraft registration: VH-RAQ 
Type of operation: Aerial Work 
Damage to aircraft: Substantial 
Departure point:3km West of Robertstown SA
Departure time:1141
Destination:3km West of Robertstown SA
 
 
 
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