Apr 26, 2024
Accident
Destroyed Anaconda, MT
Injuries1 fatal
Phase of Flight-
ConditionsVMC
OperationFAR 137
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.
NTSB WPR24FA132