Overview
A practice autorotation resulted in a hard landing that damaged the helicopter. The maneuver was planned to the ground and proceeded without issue until the flare.
Pilot Account
The pilot stated that the autorotation was uneventful until he executed the flare. He flared the helicopter and maintained the flare to get the "sink feeling," then brought the helicopter to a level attitude. As he attempted to cushion the set-down, the helicopter "fell right through" and impacted the ground hard. The pilot attributed the hard landing to an excessive sink rate.
Damage
The helicopter incurred damage from the hard impact. The specific extent of damage was not disclosed.
Mechanical Status
According to the pilot, there were no mechanical failures or malfunctions with the helicopter or any of its systems prior to the accident.