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FACTUAL INFORMATION Following a normal climb, the pilot dropped two parachutists over Hamilton Island. A power-off descent to circuit height followed. The pilot did not select Carburettor Heat during the descent. When on a long final approach the pilot attempted to arrest a high descent rate with the use of engine power. The engine failed to respond. The pilot found that the aircraft was outside gliding range of the runway and he decided to ditch the aircraft in shallow water. Engine trouble checks failed to restore power to the engine. The aircraft was ditched in shallow water and after a successful escape from the cabin, the pilot was picked up by an island launch. The aircraft's engine was transported to a maintenance facility at Archerfield where it was examined. The engine was extensively corroded by salt water. No fault was found as far as could be determined. The Bureau of Meteorology data showed that the relative humidity at ground level was 65%. The Carburettor icing - probability chart showed that serious icing at descent power was to be expected at such a humidity level. ANALYSIS Although there are other possible reasons for the power loss, it is most likely that the engine failed to produce power due to carburettor icing.
Download Final Report
[ Download PDF: 15KB]
General details
Date: 27 November 1995 Investigation status: Completed 
Time: 9:15 EST  
 Investigation type: Occurrence Investigation 
 Occurrence type: Ditching 
Release date: 13 June 1996  
Report status: Final Occurrence category: Accident 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 182P 
Aircraft registration: VH-SNA 
Sector: Sport and recreational 
Damage to aircraft: Substantial 
Departure point:Shute Harbour QLD
Destination:Hamilton Island QLD
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Last update 21 October 2014