Apr 6, 2017
Accident
Substantial La Verne, CA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The pilot’s early increased application of the collective during a simulated hovering autorotation, which resulted in a loss of rotor rpm and subsequent main rotor blade strike of the tailboom.
NTSB GAA17CA218