Aviation safety investigations & reports

Thruster T500, AUF 25-0248, Duchess (70 km SE Mt Isa) QLD, 8 October 1989

Investigation number:
Status: Completed
Investigation completed


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The pilot reported that the takeoff was being conducted in a crosswind which he estimated was from the left at 10-15 knots. The surface of the 10 metre wide strip was covered in loose gravel. At the beginning of the takeoff roll, the aircraft began to weathercock to the left. The pilot continued, believing that directional control would improve as aircraft speed increased. However, this did not occur and the aircraft ground-looped, striking an embankment at the edge of the strip. The pilot reported that the aircraft was equipped with a small tailwheel which had limited effectiveness on the soft loose surface. Also, the aircraft was a late model Thruster aircraft which had a greater keel surface than earlier models because of its enclosed fuselage. This was the first time the pilot had operated the aircraft in crosswind conditions. The operating manual for the aircraft indicates a demonstrated crosswind capability of 15 knots. This accident was not the subject of a formal on scene investigation.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 08 October 1989   Investigation status: Completed  
Time: 1202    
Location   (show map): Duchess (70 km SE Mt Isa)    
State: Queensland   Occurrence type: Loss of control  
Release date: 17 October 1989   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Thruster Aircraft (Australia) Pty Ltd  
Aircraft model T500  
Aircraft registration 25-0248  
Serial number Not known  
Type of operation Sports Aviation  
Damage to aircraft Substantial  
Departure point Duchess QLD  
Departure time 1202  
Destination Mt Guide (35 km S Mt Isa) QLD