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The pilot was accompanied by two friends on a local flight to view a property in the South West Rocks area. About twenty minutes after take off, the engine commenced to run roughly and lose power. The pilot carried out a trouble check which revealed the left magneto had failed. Whilst the pilot was attempting a forced landing the engine stopped, the aircraft collided with trees before coming to rest in a semi-inverted attitude. The pilot and passengers were able to vacate the aircraft without assistance. Post accident testing of the ignition system revealed that both magnetos were unserviceable because of age deterioration of the insulation around the transformer coils. The failure of both magnetos resulted in the loss of engine power. A service bulletin was issued by the magneto manufacturer in 1973 which recommended replacement of the transformer coils in the type of magneto fitted to VH-DLT. The aircaft maintenance records show the magnetos were repaired and tested in 1985 but the transformer coils were not replaced as recommended by the service bulletin.

Download Final Report
[ Download PDF: 23KB]
 
 
 
 
General details
Date: 16 April 1989 Investigation status: Completed 
Time: 1650 Investigation type: Occurrence Investigation 
Location:7 kms NE of Kempsey  
State: New South Wales  
Release date: 21 September 1989 Occurrence category: Accident 
Report status: Final Highest injury level: Minor 
 
Aircraft details
Aircraft manufacturer: Beech Aircraft Corp 
Aircraft model: 23 
Aircraft registration: VH-DLT 
Serial number: MA-287 
Type of operation: Private 
Damage to aircraft: Destroyed 
Departure point:Kempsey NSW
Departure time:1620
Destination:Kempsey NSW
 
 
 
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