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After flying for about an hour the pilot noticed that the engine was running roughly. A magneto check was carried out and a dead cut detected on the left magneto. The pilot decided to land the aircraft on a nearby claypan but misjudged the approach and attempted a go-around. The engine failed to deliver full power and the aircraft struck trees before coming to a halt. The spark plugs were found to be heavily fouled with lead, carbon and oil deposits. Following the cleaning of the plugs a significant rpm drop was no longer present when the magnetos were tested. However, the required minimum static engine rpm could not be obtained and subsequent inspection of the engine revealed it to be in generally poor mechanical condition.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 02 April 1986 Investigation status: Completed 
Time: 1600  
Location:100km NNW of Meekatharra Investigation type: Occurrence Investigation 
State: Western Australia  
Release date: 16 May 1986  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 172 
Aircraft registration: VH-CBH 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Moorarie, 120km NW of Meekatharra WA
Departure time:1430
Destination:Moorarie WA
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