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As the aircraft was climbing through 1000 feet the pilot noticed a reduction in manifold pressure and fuel flow readings for the right engine. He advanced the right throttle and found that the engine instruments indicated that the engine was performing as if it was normally aspirated. A short time later he saw flames coming from the right engine and the fire warning light and alarm bell activated. The fuel to the engine was shut off but the pilot was unable to feather the propeller. The fire did not go out. However, the pilot was able to successfully land the aircraft at Rockhampton where the fire was extinguished. An inspection of the aircraft revealed that the number 4 cylinder was cracked and holed around the seat of the exhaust valve. It is considered that the cylinder cracking and the subsequent burn away of material resulted from extreme operating temperatures. The torching of the combustion products through the hole resulted in the induction manifold being consumed by fire. It was also determined that the propeller could not be feathered because the propeller governor control cable had become inoperative after its mount point on the induction manifold had been destroyed by fire.

Download Final Report
[ Download PDF: 22KB]
 
 
 
 
General details
Date: 26 February 1986 Investigation status: Completed 
Time: 245 Investigation type: Occurrence Investigation 
Location:Rockhampton  
State: Queensland  
Release date: 14 July 1987 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 402 
Aircraft registration: VH-MWF 
Type of operation: Charter 
Damage to aircraft: Substantial 
Departure point:Rockhampton QLD
Departure time:0245
Destination:Mackay QLD
 
 
 
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