Aviation safety investigations & reports

Hughes 269A, VH-HOR, 15km NW of Yuendumu NT, 12 July 1990

Investigation number:
Status: Completed
Investigation completed


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The helicopter was engaged in cattle mustering operations. Whilst in level flight at an altitude of 200 feet, the pilot heard a loud noise and felt severe vibration from the engine, which subsequently failed. Following auto-rotation to ground impact, the aircraft rolled onto its side. The semi-conscious pilot was assisted from the wreckage by the passenger who had evacuated the cockpit unassisted. Strip examination revealed that the engine had failed due to broken conrod bolts and a separated conrod big-end cap from the No. 4 cylinder conrod assembly. This had resulted in internal mechanical damage sufficient to stop the engine.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 12 July 1990   Investigation status: Completed  
Time: 1100    
Location: 15km NW of Yuendumu    
State: Northern Territory    
Release date: 11 December 1990   Occurrence category: Accident  
Report status: Final   Highest injury level: Serious  

Aircraft details

Aircraft details
Aircraft manufacturer Hughes Helicopters  
Aircraft model 269  
Aircraft registration VH-HOR  
Serial number 430203  
Type of operation Aerial Work  
Sector Helicopter  
Damage to aircraft Substantial  
Departure point Yuendumu NT  
Departure time 0900  
Destination Yuendumu NT