Aviation safety investigations & reports

Bell 47-G2, VH-KHK, Torry Plains Station (90 km NE Balranald) NSW, 10 March 1987

Investigation number:
Status: Completed
Investigation completed


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The pilot reported that as he brought the aircraft into the hover in preparation for landing, it sank to the ground from a height of about 15 feet. The tailrotor blades struck a lygnum bush and the drive shaft sheared. The pilot indicated that the main rotor rpm had decayed, possibly from over-pitching during the latter stages of the approach. Operations had been conducted in gusty wind conditions. When the pilot noted that the main rotor speed had decayed to 2800 rpm, he applied more power but was unable to arrest the rate of descent.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 10 March 1987   Investigation status: Completed  
Time: 1230    
Location: Torry Plains Station (90 km NE Balranald)    
State: New South Wales   Occurrence type: Hard landing  
Release date: 08 July 1987   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Bell Helicopter Co  
Aircraft model 47  
Aircraft registration VH-KHK  
Type of operation Aerial Work  
Sector Helicopter  
Damage to aircraft Substantial  
Departure point Torry Plains Station NSW  
Departure time 1230  
Destination Torry Plains Station NSW