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The pilot reported that, shortly after commencing to cruise at about 750 feet agl, the helicopter encountered a willy willy and was thrown almost upside down. During the recovery actions, right pedal was applied rapidly and the operating cable broke. An auto-rotational landing was initiated but, just prior to touchdown, another willy willy struck the helicopter and it landed while spinning under the influence of this disturbance.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 30 November 1984 Investigation status: Completed 
Time: 1328  
Location:Wyena Station, 37 km NW of Moranbah Investigation type: Occurrence Investigation 
State: Queensland  
Release date: 19 December 1984  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Hiller Aviation 
Aircraft model: UH-12 
Aircraft registration: VH-FBH 
Type of operation: Business 
Damage to aircraft: Substantial 
Departure point:Wyena Station, QLD
Departure time:1328
Destination:Broadmeadow Station, 22 km N of Moranbah, QLD
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Last update 01 April 2011