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The pilot was engaged in mustering pigs for aerial culling. On spotting a group of animals, he flared the helicopter from about 50 knots to a slow speed and then banked hard to the left at low level. The main rotor blade tips struck long grass and the helicopter rolled over and came to rest on its left side. The area of operations comprised a virtual " sea of grass ", unrelieved by any trees or other vegetation. Judgement of height above the ground under such conditions is more difficult than usual. The manoeuvre flown by the pilot would have exacerbated the problem.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 16 October 1989 Investigation status: Completed 
Time: 930  
Location:100 km SE Darwin Investigation type: Occurrence Investigation 
State: Northern Territory  
Release date: 20 December 1989  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R22 
Aircraft registration: VH-KSI 
Serial number: 577 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:100 km SE Darwin NT
Departure time:0830
Destination:100 km SE Darwin NT
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