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The right engine had been replaced as part of a routine maintenance program. During two subsequent flights the engine lost all power. Extensive ground checks failed to reproduce the symptoms and an air test was then carried out. During the test the right engine failed and while various techniques were being employed by the pilot to restore power, the left engine also failed. The pilot was committed to a gear up landing in a paddock and damage was sustained during the ground slide when a mound of dirt was struck. Faulty seals in the right engine fuel shut off valve allowed air to be drawn into the fuel lines, causing the power losses experienced. The left engine failed from fuel exhaustion and when the pilot selected crossfeed from the right tank, air was drawn through the defective valve, preventing further running of the left engine.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 03 February 1984 Investigation status: Completed 
Time: 1053  
Location:6 km SSE of Moorabbin Investigation type: Occurrence Investigation 
State: Victoria  
Release date: 07 March 1985  
Report status: Final Occurrence category: Accident 
 Highest injury level: Minor 
Aircraft details
Aircraft manufacturer: Piper Aircraft Corp 
Aircraft model: PA-31 
Aircraft registration: VH-KFD 
Type of operation: Aerial Work 
Damage to aircraft: Substantial 
Departure point:Moorabbin VIC
Departure time:1053
Destination:Moorabbin VIC
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Last update 01 April 2011