Aviation safety investigations & reports

Bell Helicopter Co 206B(III), VH-JGE, World Trade Centre, (ALA) 10 October 1999

Investigation number:
199904791
Status: Completed
Investigation completed

Summary

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    
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 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  
Last update 13 May 2014