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The pilot reported that he felt a "kick" in the tail rotor which disappeared immediately. A short time later, the anomaly returned and the pilot elected to carry out a precautionary landing. However, the engine suddenly failed and the pilot had to use most of the rotor inertia to reach a suitable landing area. The following attempt to cushion the landing with the use of collective input was ineffective and a heavy landing ensued. An inspection of the aircraft by the operator revealed traces of water in the carburettor fuel bowl and this is believed to have caused the engine failure. No other defects or anomalies were reported.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 23 September 1990 Investigation status: Completed 
Time: N/K  
Location   (show map):Snowdrop Creek NT ( 130 km NE Katherine ) Investigation type: Occurrence Investigation 
State: Northern Territory  
Release date: 05 April 1991  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R22 
Aircraft registration: VH-HBH 
Serial number: 557 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Eva Valley NT
Departure time:N/K
Destination:Eva Valley NT
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