Autorotation Demonstration and Practice
A flight instructor demonstrated an out of ground effect (OGE) autorotation from an altitude of 500 feet above ground level (AGL) and an airspeed of 0 knots. Following the demonstration, the pilot receiving instruction was asked to perform an OGE autorotation from the same altitude and airspeed.
Pilot's Maneuver
During the pilot's second OGE autorotation, he "rolled the throttle off and moved the cyclic slightly forward." The airspeed did not climb above 45 knots, and an excessive rate of descent was encountered. The pilot used almost no cyclic to flare the helicopter; however, he pulled "all collective available" prior to touchdown.
Touchdown
The helicopter touched down hard.
Investigation
The accident investigation source provided no additional details regarding aircraft type, registration, operator, date, location, occupants, injuries, damage items, time of day, weather, or ATC involvement. No probable cause was stated.