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On 14 February 2016, the pilot of a Robinson R44 helicopter, registered VH-HXY, conducted a local private flight from a property about 90 km north of Hughenden, Queensland.

After operating for about 1 hour, the pilot landed near a water trough to check a float. During the approach and landing, the pilot sighted powerlines strung across the trough, and manoeuvred to remain clear of them.

While the helicopter was on the ground, the wind veered from a southwest to a southerly direction, so that to take off into wind, the helicopter would track perpendicular to the powerlines. After completing the pre-take-off checks, the pilot turned his attention to a mob of cattle, to ensure the noise of the helicopter would not send them through a fence.

The helicopter lifted off initially parallel to the powerlines, and the pilot then turned the helicopter to manoeuvre around a tree and climbed to about 20 ft above ground level. The tree momentarily obscured the powerlines and the pilot’s attention was on the cattle.

As the helicopter rounded the tree, at an airspeed of about 50 kt, the skids struck the powerlines. The pilot heard the wires contact the helicopter and it decelerated rapidly. The pilot lowered collective and pulled back on the cyclic, but the helicopter rolled forwards over the wires, descended rapidly, and collided with the ground passenger-side down in a nose down attitude.

The wire was hooked on the helicopter’s right skid, with power still running through it. After the blades stopped turning, the pilot exited the helicopter. The pilot was not injured and the helicopter was destroyed.

The ATSB publication Avoidable Accidents No. 2 – Wirestrikes involving known wires: A manageable aerial agricultural hazard, explains strategies to help minimise the risk of striking wires while flying.

 

Aviation Short Investigations Bulletin - Issue 47

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General details
Date: 14 February 2016 Investigation status: Completed 
Time: 15:21 EST Investigation type: Occurrence Investigation 
Location   (show map):near Townsville Airport (Boonacarbaroo Station) Occurrence type:Wirestrike 
State: Queensland Occurrence class: Operational 
Release date: 13 April 2016 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R44 
Aircraft registration: VH-HXY 
Serial number: 0350 
Type of operation: Private 
Sector: Helicopter 
Damage to aircraft: Destroyed 
Departure point:Boonacarbaroo Station, Qld
 
 
 
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Last update 18 April 2017