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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 Investigation type: Occurrence Investigation 
Location:Torry Plains Station (90 km NE Balranald) Occurrence type:Hard landing 
State: New South Wales Occurrence class: Operational 
Release date: 08 July 1987 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
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
 
 
 
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