1 fatal · BELL 206-L4 · 2024-04-26 · Anaconda, MT, USA
Event
NTSB number
WPR24FA132
Event ID
20240426194154
Type
Accident
Date
2024-04-26
Location
Anaconda, MT, USA
Coordinates
46.116655, -112.9266
Injuries
Highest injury
FATL
Fatal
1
Serious
0
Minor
0
Uninjured
0
Total aboard
1
Aircraft
Make
BELL
Model
206-L4
Registration
N988B
FAR Part
133
Engines
1
Damage
DEST
Conditions
Light
DAYL
Weather
VMC
Probable cause
A total loss of engine power due to a loss of cooling oil to the turbine-to-compressor coupling shaft and subsequent fracture of the shaft at an altitude too low for the pilot to complete a successful autorotation. Contributing to the accident was carbon buildup in the piccolo tube screen and nozzles and the disintegration of the spur adapter gearshaft O-rings for reasons that could not be determined.