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The pilot was carrying out various manoeuvres in the training area. After about an hour general flying, the pilot decided to conduct a practice forced landing approach to a disused strip on the island. At about 200 feet on final approach, the pilot moved the carburettor heat control to the cold position and applied full power to overshoot. The engine failed to respond normally, and produced only about 1500 rpm. The pilot exercised the throttle control without obtaining any further power increase, and he was then committed to a forced landing. Touchdown occurred in a cleared paddock and damage to the nose gear and propeller was sustained when the aircraft ran through a ditch. No fault was subsequently found with the engine or its associated systems. Reference to the appropriate chart indicated that atmospheric conditions were conducive to the formation of moderate to severe carburettor icing. Although carburettor heat was selected at the start of the forced landing practice, it was likely that some icing had already formed and was not dispersed by the time the throttle was re-opened. When the engine failed to deliver full power, the pilot had not re-applied carburettor heat in an effort to restore normal engine operation.

Download Final Report
[ Download PDF: 22KB]
 
 
 
 
General details
Date: 01 February 1986 Investigation status: Completed 
Time: 1545 Investigation type: Occurrence Investigation 
Location:French Island  
State: Victoria  
Release date: 11 June 1986 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 152 
Aircraft registration: VH-TYA 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Tyabb VIC
Departure time:1445
Destination:Tyabb VIC
 
 
 
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