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Soon after settling in the cruise at 2000 feet, the pilot noticed that the fuel flow was lower than expected. He selected rich mixture but the fuel flow began to fluctuate markedly and the MAP reduced. A short time later the engine began to run roughly, accompanied by a rise in oil pressure and a further reduction in MAP. The pilot elected to return to the departure point. Engine power became inadequate for level flight and the pilot selected an emergency landing area. The aircraft came to rest after running through two barbed wire fences. The engine failed due to long term lack of lubrication to several bearings caused by the rotation of two main bearing shells which covered oil supply galleries. The damage to the main bearing assemblies was such that the cause of bearing shell rotation could not be established.

Download Final Report
[ Download PDF: 22KB]
 
 
 
 
General details
Date: 13 May 1984 Investigation status: Completed 
Time: 1509 Investigation type: Occurrence Investigation 
Location:8 Km SW of Beaudesert  
State: Queensland  
Release date: 04 June 1985 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Beech Aircraft Corp 
Aircraft model: 36 
Aircraft registration: VH-TYZ 
Type of operation: Charter 
Damage to aircraft: Substantial 
Departure point:Kooralbyn QLD
Departure time:1458
Destination:Brisbane QLD
 
 
 
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Last update 01 April 2011