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The aircraft was approaching 500 feet above the ground in a climb when the pilot heard a sudden increase in engine noise and dark coloured dust spattered the windshield. He thought that the propeller must have failed and that the engine was overspeeding. He closed the throttle, turned off the ignition and entered a glide. The aircraft was landed straight ahead, into wind but onto downward sloping terrain. The slope was steeper than the pilot had anticipated, and he was forced to induce a ground loop in order to avoid a fence. During the ground loop the right maingear leg and the tail wheel assembly sustained damage. When the pilot subsequently inspected the aircraft he discovered that the muffler had partially detached from the exhaust pipe because a retaining spring had broken. The loud noise had been unmuffled engine noise and the dust on the windshield had emanated from the exhaust pipe.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 23 February 1989 Investigation status: Completed 
Time: 1700  
Location:Freshwater Creek Investigation type: Occurrence Investigation 
State: Victoria  
Release date: 21 June 1989  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Thruster Aircraft (Australia) Pty Ltd 
Aircraft model: Gemini 
Aircraft registration: 25-0140 
Serial number: N/A 
Type of operation: Sports Aviation 
Damage to aircraft: Substantial 
Departure point:Leopold VIC
Departure time:1615
Destination:Leopold VIC
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