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During short final to landing at a heliport, as the helicopter approached a hover at about 6 ft AGL, the engine spooled down to idle RPM. The pilot continued with the landing and landed the helicopter without further incident. Following the landing the engine remained at idle RPM and did not respond to pilot inputs.

Investigation revealed internal damage to the engine compressor section. This damage was identified to be caused by the breaking off and subsequent ingestion of a compressor third stage stator vane blade. An analysis of the vane blade root indicated a pre-existing fatigue crack at the forward edge of the blade. The most recent inspection of the compressor had occurred 218.9 hours prior to the occurrence. The compressor case had accumulated 513.7 hours since overhaul. Erosion of the blade vane was not a factor. The investigation was unable to determine the origin of the fatigue crack.

 
General details
Date: 10 October 1999 Investigation status: Completed 
Time: 1045 hours EST Investigation type: Occurrence Investigation 
Location   (show map):World Trade Centre, (ALA)  
State: Victoria  
Release date: 18 January 2000 Occurrence category: Incident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Bell Helicopter Co 
Aircraft model: 206 
Aircraft registration: VH-JGE 
Serial number: 528 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Nil 
Departure point:Essendon, VIC
Departure time:0930 hours EST
Destination:Trade Centre Heliport, VIC
 
 
 
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Last update 13 May 2014