Nov 24, 2007
Accident
Substantial Suffolk, VA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The V-drive belts' rolling off the sheaves for undetermined reasons, resulting in a loss of power to the rotor system, and the pilot's failure to maintain adequate rotor rpm during the autorotation, resulting in a hard landing.
NTSB NYC08LA043