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During the descent the pilot heard a loud bang, following which the engine stopped. An autorotational descent was carried out for a landing onto the clearest available area, a dry river bed. The helicopter touched down with some forward speed on the soft sand, pitched forward and rolled over. An inspection of the wreckage revealed that a connecting rod big-end had failed due to fatigue. These fatigue cracks had initiated in the area of the recesses for the big end bolt nuts, where production machining was found to be quite coarse. This accident was not the subject of an on-site investigation.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 27 February 1987 Investigation status: Completed 
Time: N/K  
Location:3 km SE St Pauls Stn, 90 km SE of Charters Towers Investigation type: Occurrence Investigation 
State: Queensland  
Release date: 30 October 1987  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Hiller Aviation 
Aircraft model: UH-12 
Aircraft registration: VH-HJW 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Airville, 8 km South of Ayr QLD
Departure time:N/K
Destination:St Pauls Station QLD
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