N8372FMcdonnell Douglas Helicopter 369E · 1991

During an instructional flight, the operator reported that during the practice autorotation, the pilot receiving instruction held the flare for too long and did not level the helicopter before touchdown. The helicopter landed hard and struck the tail on the ground which resulted in substantial damage to the empennage, tail boom, and tail rotor drive system. The operator reported that there were no preaccident mechanical malfunctions of failures with the helicopter that would have precluded normal operation.

During an evaluation flight with a company pilot, the instructor pilot reported that he failed to re-apply engine power prior to the completion of a practice autorotation with a power recovery. During the maneuver, the instructor’s attention was diverted from reapplying engine power by an airplane holding short of the runway near their planned touchdown point. The helicopter subsequently landed hard on the runway, which resulted in substantial damage to the tail boom. The instructor reported that there were no preaccident mechanical malfunctions of failures with the helicopter that would have precluded normal operation.