Aviation safety investigations & reports

Hiller UH12-E, VH-MJV, Elizabeth Downs Station (135 km SW Darwin) NT, 11 March 1987

Investigation number:
Status: Completed
Investigation completed


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The pilot was directing cattle through a gate when a cow turned and began to walk back towards the helicopter. It stopped in front of the aircraft before charging. The pilot applied back cyclic and up collective in an attempt to avoid the animal but the tail rotor struck the ground. The helicopter began to yaw and the pilot landed the aircraft immediately. It continued to yaw after the landing and the landing skid assembly was substantially damaged. The pilot was relatively inexperienced on the helicopter type, having the majority of his recent experience on more powerful and responsive types. On this occasion, the rate of cyclic application was too great and not compensated for by the collective input. This accident was not the subject of an on-site investigation.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 11 March 1987   Investigation status: Completed  
Time: 915    
Location: Elizabeth Downs Station (135 km SW Darwin)    
State: Northern Territory   Occurrence type: Collision with terrain  
Release date: 29 June 1987   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-MJV  
Type of operation Aerial Work  
Damage to aircraft Substantial  
Departure point Elizabeth Downs Station NT  
Departure time 0915  
Destination Elizabeth Downs Station NT