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Just after takeoff, at about 40 feet above ground level, the engine began to misfire and run roughly, then failed completely. The pilot dumped the load and commenced a steep turn to the left in an attempt to land on a track behind the aircraft. During the turn he realised that the aircraft would not make the chosen area and the aircraft was stalled into the tops of the trees. After the impact it descended steeply to the ground. The pilot escaped with scratches and some bruising. Subsequent inspection of the engine found that the left magneto had become detached from its mountings because of the loss of the retaining nuts. The mount bolts of both magnetos were fitted with spring washers rather than being lockwired. When the left magneto detached it pulled and broke the right magneto switch lead. It appears that the broken lead then contacted part of the engine and grounded the right magneto, depriving the engine of an ignition source.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 27 August 1987 Investigation status: Completed 
Time: 959  
Location:Dunwich, Stradbroke Island Investigation type: Occurrence Investigation 
State: Queensland  
Release date: 10 March 1988  
Report status: Final Occurrence category: Accident 
 Highest injury level: Minor 
Aircraft details
Aircraft manufacturer: Grumman American Aviation Corp 
Aircraft model: G-164 
Aircraft registration: VH-PUV 
Serial number: 441 
Type of operation: Aerial Work 
Damage to aircraft: Destroyed 
Departure point:Dunwich QLD
Departure time:0959
Destination:Dunwich QLD
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