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The pilot reported that, while hover-taxying the helicopter prior to commencing a circuit, it suddenly yawed sharply to the left. He applied right pedal and initially lowered the collective pitch control before raising it. However, the helicopter landed heavily, damaging the front and rear crosstubes. No fault was found with the helicopter which might have contributed to the accident. The pilot reported that he was not sure that an engine failure had occurred but that he reacted instinctively when the helicopter yawed left. Discussion revealed that the pilot rode a motor cycle, the hand throttle of which operated in the reverse sense to that on the helicopter. It is possible that the pilot inadvertently reduced the throttle setting, thus inducing the yaw. His limited flying experience and exposure to engine failure situations then contributed to him lowering the collective pitch control as part of the initial reaction to the yaw. The helicopter was at too low a height to prevent a heavy landing from the descent caused by the lowering of the collective pitch control.

Download Final Report
[ Download PDF: 22KB]
 
 
 
 
General details
Date: 14 May 1989 Investigation status: Completed 
Time: 1259 Investigation type: Occurrence Investigation 
Location:Archerfield Aerodrome Occurrence type:Hard landing 
State: Queensland Occurrence class: Operational 
Release date: 09 August 1989 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R22 
Aircraft registration: VH-HBE 
Serial number: 509 
Type of operation: Flying Training 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Archerfield Aerodrome QLD
Departure time:1255
Destination:Archerfield Aerodrome QLD
 
 
 
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