Event Description
While conducting a training takeoff at an altitude of 300 feet above ground level (AGL), the instructor pilot reduced the throttle to simulate an engine failure. The presolo student pilot failed to lower the collective pitch control to enter autorotation, which led to a loss of rotor RPM. The certified flight instructor (CFI) attempted to intervene but initiated remedial action too late to prevent the aircraft from impacting the ground.
Aircraft and Crew Details
The accident flight was the CFI's first training session with this student, who had accumulated 20 hours of flight time. No other information about the aircraft type, registration, operator, or location was provided.
Impact and Damage
The helicopter impacted the ground at a speed of 40 knots. The force of the impact fractured the landing gear, and the aircraft subsequently rolled over. The extent of injuries, if any, was not reported.
Probable Cause
The instructor pilot retarded the throttle to simulate an engine failure; the presolo student did not lower the collective to enter autorotation, resulting in a loss of rotor RPM, and the CFI initiated remedial action too late to avoid ground impact.