Mar 22, 2011
Accident
Substantial Goshen, NY
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The pilot’s failure to adhere to published preflight checklist limitations and procedures, resulting in excessive slack and subsequent failure of the power transmission belts and a total loss of rotor system drive.
NTSB ERA11LA204