Aviation safety investigations & reports

Australian Ultralight Industries Bunyip, N/K, Needle Creek (approx 10 km NE Jundah) QLD, 9 October 1990

Investigation number:
Status: Completed
Investigation completed


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The pilot was conducting cattle spotting operations, operating from an area of flood plain on the property. After takeoff on the accident flight, a right turn was commenced when the aircraft reached about 250 feet above ground level. At the completion of the turn the nose dropped but the pilot was not initially concerned due to the prevailing turbulence. He soon found that he could not raise the nose by use of elevator control. Witnesses saw the aircraft commence to dive, and the attitude of the aircraft change until it was inverted. It remained in this attitude until ground impact. On this aircraft type, the horizontal stabiliser is attached to the fuselage beam by two 5/16 inch diameter rose joints mounted vertically. The all-flying stabiliser is operated by a push-pull rod from the control column. One of the rose joints apparently failed during the flight, causing the pilot to lose control of the horizontal stabiliser.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 09 October 1990   Investigation status: Completed  
Time: 930    
Location: Needle Creek (approx 10 km NE Jundah)    
State: Queensland   Occurrence type: Airframe - Other  
Release date: 10 April 1991   Occurrence category: Accident  
Report status: Final   Highest injury level: Serious  

Aircraft details

Aircraft details
Aircraft manufacturer A.W. & W.E. Peters Pty Ltd  
Aircraft model Bunyip  
Aircraft registration Unknown  
Serial number N/K  
Type of operation Sports Aviation  
Damage to aircraft Substantial  
Departure point Needle Creek QLD  
Departure time N/A  
Destination Needle Creek QLD