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Because the external load could not be released electrically, the pilot landed on snow to allow an assistant to release the load manually. After the load was released, the assistant had moved to the pilot's window to discuss the next load when the rear of the left skid began to sink into the snow. The pilot attempted to correct the situation but the main rotor struck the ground and the aircraft rolled over. The helicopter was not fitted with any load spreading devices for operations in snow. Although the pilot had tested the load bearing capacity of the snow, the technique did not provide sufficient indication that the snow could not support the aircraft. An intermittent electrical malfunction is believed to have caused the cargo hook failure.

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General details
Date: 02 June 1983 Investigation status: Completed 
Time: 1600  
Location:Mt.Perisher Investigation type: Occurrence Investigation 
State: New South Wales Occurrence type: Loss of control 
Release date: 12 March 1984 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: Minor 
Aircraft details
Aircraft manufacturer: Bell Helicopter Co 
Aircraft model: 206 
Aircraft registration: VH-AJI 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Destroyed 
Departure point:Perisher Valley NSW
Departure time:1600
Destination:Mt.Perisher NSW
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Last update 13 May 2014