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The pilot was mustering cattle when the helicopter yawed to the right. Believing there was a tail rotor failure, the pilot turned to the left towards a clearing to land as soon as possible. The landing was heavy, and the main rotors severed the tail boom. Investigation revealed that the initial yaw to the right had occurred when the main rotor blades struck trees. The pilot did not realise during the short time interval between the decision to land and the landing itself, that if there had been a tail rotor failure he would not have been able to maintain normal control when positioning for landing.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 17 April 1988 Investigation status: Completed 
Time: 1425  
Location:Battle Creek NT (55km NE Victoria River Downs NT) Investigation type: Occurrence Investigation 
State: Northern Territory  
Release date: 24 June 1988  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Bell Helicopter Co 
Aircraft model: 47 
Aircraft registration: VH-CSI 
Serial number: 6504 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Battle Creek NT
Departure time:N/K
Destination:Battle Creek NT
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