Aviation safety investigations & reports

Hughes 369-HS, VH-HUE, Archerfield QLD, 8 February 1989

Investigation number:
198903751
Status: Completed
Investigation completed

Summary

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The pilot was undergoing a routine currency check with a flying instructor. As part of the check the pilot was asked to carry out a hover taxiing autorotation. The power was reduced to flight idle with the aircraft about 5 feet above ground level and moving forward at taxiing speed. The pilot carried out what was considered to be a normal landing, however, shortly after touchdown a loud bang was heard and the tail rotor and stabiliser were seen to land in front of the aircraft. The tailboom had been severed by the mainrotor during the landing. Indentations left by the skids in the soft ground indicated that the aircraft moved forward about 4 metres after initial ground contact. The main rotor was found to have an excessive static droop angle which reduced main rotor tip clearance from the tailboom by approximately 75 millimetres. This, in combination with attitude changes during the touchdown on the soft surface, rotor tilt and reduced rotor RPM, was contributory to the development of the accident.

Download Final Report
[Download  PDF: 22KB]
 
 
 
General details
Date: 08 February 1989   Investigation status: Completed  
Time: 724    
Location: Archerfield    
State: Queensland   Occurrence type: Hard landing  
Release date: 09 August 1989   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Hughes Helicopters  
Aircraft model 369  
Aircraft registration VH-HUE  
Serial number 790106S  
Type of operation Flying Training  
Sector Helicopter  
Damage to aircraft Substantial  
Departure point Archerfield QLD  
Departure time N/A  
Destination Archerfield QLD