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During a spray run, the pilot heard a loud bang, followed by a power loss and smoke in the cabin. He elected to land the aircraft in a paddock ahead. The mainwheels struck a log during the landing role and the aircraft nosed over. Inspection revealed that the top of the number three cylinder head had separated at the second barrel attachment thread. This failure caused a drastic loss of power and allowed combustion products into the engine cowling and cabin. Specialist examination indicated that the cylinder head separated due to metal fatigue cracking. The age of the cylinder could not be established.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 15 March 1989 Investigation status: Completed 
Time: 725  
Location:5km South of Casino Investigation type: Occurrence Investigation 
State: New South Wales  
Release date: 12 December 1989  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 188 
Aircraft registration: VH-IQI 
Serial number: 18801348 
Type of operation: Aerial Work 
Damage to aircraft: Substantial 
Departure point:Lismore NSW
Departure time:0710
Destination:Lismore NSW
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