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During a practice low level circuit, the engine failed, accompanied by a loud bang. During the subsequent forced landing, the helicopter rolled on to its right side. Later examination of the engine revealed that the number three connecting rod had failed at the crankshaft and pierced the crankcase. The connecting rod showed signs of metal fatigue. However, no manufacturing defects were identified near the fracture surface nor was any assembly-related fault established. This accident was not the subject of an on-scene investigation.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 29 December 1989 Investigation status: Completed 
Time: 900  
Location:Bribie Island Investigation type: Occurrence Investigation 
State: Queensland  
Release date: 10 May 1990  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Hiller Aviation 
Aircraft model: UH-12 
Aircraft registration: VH-FBH 
Serial number: 5081 
Type of operation: Flying Training 
Damage to aircraft: Substantial 
Departure point:Caloundra QLD
Departure time:0830
Destination:Caloundra QLD
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