ASN Wikibase Occurrence # 132272
Last updated: 1 November 2014
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Date:03-JAN-1989
Time:1250
Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206B-3 JetRanger III
Owner/operator:Petroleum Helicopters
Registration: N22704
C/n / msn: 3614
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Airplane damage: Written off (damaged beyond repair)
Location:S.Timbalier 151, Gulf of Mexico -   Atlantic Ocean
Phase: En route
Nature:Unknown
Departure airport:
Destination airport:
Narrative:

PROBABLE CAUSE:A COLLISION BETWEEN THE AIRCRAFT AND THE PLATFORM DURING THE EMERGENCY AUTOROTATION WHICH CAUSED THE LEFT SKID AND FLOAT TO SEPARATE AND DESTABILIZED THE AUTOROTATION. THE COLLISION WAS PROBABLY UNADOIDABLE DUE TO THE MANEUVER THAT WAS BEING CONDUCTED AT THE ONSET OF THE EMERGENCY. THE EMERGENCY LANDING WAS ATTEMPTED FOLLOWING AN ENGINE FAILURE THAT WAS THE RESULT OF A TOTAL COMPRESSOR FAILURE. THE COMPRESSOR FAILURE WAS CAUSED BY A FATIGUE FAILURE OF THE SIXTH STAGE WHEEL WHICH SEPARATED. THE FAILURE WAS INITIATED DUE TO A CASTING INCLUSION IN THE WHEEL WHICH WAS NOT DETECTED DURING THE MANUFACTURING PROCESS.

Sources:
NTSB id 20001213X27585


Revision history:

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