Aviation safety investigations & reports

Aerospatiale SA-341G, VH-WLS, Warrumbungle National Park NSW, 11 October 1981

Investigation number:
Status: Completed
Investigation completed


Download Final Report
[Download  PDF: 22KB]

During a wallaby habitat survey of Bluff Mountain the aircraft entered severe turbulence and strong downdrafts. The pilot applied maximum power to avoid impact with the ground and the engine turbine failed. The aircraft entered trees, nosed over and caught fire. The forecast wind speed was 15 to 20 knots and the actual speed was generally close to this. The encounter with the turbulence and downdraft was sudden and unexpected and resulted in the pilot having to use all available engine power in order to regain control. The engine turbine temperature limits were exceeded, leading to the failure of the turbine.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 11 October 1981   Investigation status: Completed  
Time: 640    
Location: Warrumbungle National Park    
State: New South Wales    
Release date: 22 May 1985   Occurrence category: Accident  
Report status: Final   Highest injury level: Fatal  

Aircraft details

Aircraft details
Aircraft manufacturer Aerospatiale Industries  
Aircraft model SA341  
Aircraft registration VH-WLS  
Type of operation Aerial Work  
Sector Helicopter  
Damage to aircraft Destroyed  
Departure point Canyon Camp NSW  
Departure time 0640  
Destination Coonabarrabran NSW  
Last update 16 November 2015