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At approximately 15 feet above the ground after take-off from a confined area, the engine began to run roughly. The pilot's attention was distracted by the rough running and he failed to see a large overhanging branch. The main rotor blades struck the branch and the pilot lost control of the helicopter which touched down heavily on its left hand side. The rough running had been caused by oil deposits on the spark plugs.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 30 October 1989 Investigation status: Completed 
Time: 1100  
Location:100 km NE Kununurra Investigation type: Occurrence Investigation 
State: Western Australia  
Release date: 24 January 1990  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R22 
Aircraft registration: VH-UXM 
Serial number: 422 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:100 km NE Kununurra WA
Departure time:N/A
Destination:Kununurra WA
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