Aviation safety investigations & reports

Hughes 269C, VH-KZR, Mt Anderson Homestead, 80km South-east of Derby WA, 14 June 1984

Investigation number:
Status: Completed
Investigation completed


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After landing, as the pilot lowered the collective lever, the helicopter entered ground resonance. Recovery action was not taken by the pilot and one of the main rotor blades struck a fuel drum. The resulting imbalance of the main rotor system caused the rotor mast to separate from its attachment. An inspection of the helicopter revealed that the undercarriage oleo struts had incorrect and differing inflation levels, and that the main rotor dampers had been incorrectly assembled.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 14 June 1984   Investigation status: Completed  
Time: 1200(Aprx)    
Location: Mt Anderson Homestead, 80km South-east of Derby    
State: Western Australia   Occurrence type: Airframe - Other  
Release date: 18 May 1987   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Hughes Helicopters  
Aircraft model 269  
Aircraft registration VH-KZR  
Type of operation Aerial Work  
Sector Helicopter  
Damage to aircraft Substantial  
Departure point Mt Anderson Homestead WA  
Departure time 1200(Aprx)  
Destination Mt Anderson Homestead WA  
Last update 13 May 2014