Overview
During a training flight, a private student pilot with a single-engine land helicopter rating was practicing a power recovery autorotation. The exercise involved simulating an engine failure and then recovering power before touchdown. However, during the maneuver, the engine experienced a complete loss of power, prompting the pilot to execute a full autorotation.
Landing and Sequence of Events
The pilot conducted a power-off landing to an open soft field. As the helicopter touched down, it tipped forward. The main rotor blades subsequently struck and severed the tail boom. The helicopter then rolled onto its right side, coming to rest in that position.
Engine Examination
Following the accident, an examination of the engine was performed. The inspection found no evidence of pre-impact failure or malfunction. The engine appeared to have been operational prior to the power loss, with no indications of a mechanical defect that would have caused the power loss before impact.
Conclusion
The accident sequence began when the engine lost all power during a practice autorotation. The subsequent landing in a soft field resulted in the helicopter tipping forward, leading to the main rotor striking the tail boom and the helicopter rolling onto its side. The engine examination revealed no preexisting issues.