Aviation safety investigations & reports

Hiller UH-12E4, VH-FBZ, Potosi' Station, 52 km NE Muttaburra QLD, 30 March 1984

Investigation number:
Status: Completed
Investigation completed


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The more experienced pilot was occupying the rear control position, which did not have tail rotor control pedals, while another pilot flew the aircraft. During the approach to land the pilot in the rear seat became concerned when the airspeed decayed and he pushed the cyclic control forward to initiate a go around. The aircraft yawed to the right, control was lost and the aircraft struck the ground heavily, coming to rest on its right side. The inexperienced pilot occupying the front seat had been surprised when the rear seat pilot had taken control during the approach. Although he had been instructed to apply left pedal, it is likely that his delay in doing so, prevented control from being regained before the helicopter struck the ground. Inspection of the aircraft revealed that forward cyclic control movement was limited by incorrect rigging. This may have also contributed to the loss of control.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 30 March 1984   Investigation status: Completed  
Time: 950    
Location: Potosi' Station, 52 km NE Muttaburra    
State: Queensland   Occurrence type: Loss of control  
Release date: 30 October 1985   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Hiller Aviation  
Aircraft model UH-12  
Aircraft registration VH-FBZ  
Type of operation Aerial Work  
Damage to aircraft Substantial  
Departure point Elabe' Station QLD  
Departure time 0950  
Destination Potosi' Station QLD  
Last update 13 May 2014