Investigation: 198703464 - Hiller UH 12-E, VH-HJW, 3 km SE St Pauls Stn, 90 km SE of Charters Towers QLD, 27 February 1987

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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.

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General details
Date:	27 February 1987	Investigation status:	Completed
Time:	N/K	Investigation type:	Occurrence Investigation
Location:	3 km SE St Pauls Stn, 90 km SE of Charters Towers
State:	Queensland
Release date:	30 October 1987	Occurrence category:	Accident
Report status:	Final	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