MINR · BELL 206B-III · 1989-01-03 · S.TIMBALIER 151
Event
NTSB number
FTW89LA036
Event ID
20001213X27585
Type
Accident
Date
1989-01-03
Location
S.TIMBALIER 151
Injuries
Highest injury
MINR
Fatal
0
Serious
0
Minor
1
Uninjured
0
Total aboard
1
Aircraft
Make
BELL
Model
206B-III
Registration
N22704
FAR Part
133
Engines
1
Damage
DEST
Conditions
Light
DAYL
Weather
VMC
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.