Incident Overview
A flight instructor and a commercial pilot were practicing full touchdown autorotations in preparation for the commercial pilot's flight instructor check ride. On the first attempt, the commercial pilot placed the cyclic too far forward. On the second attempt, the commercial pilot placed the cyclic too far back, resulting in the main rotor blade contacting the tailboom assembly.
Sequence of Events
The training session involved multiple autorotation attempts. The instructor reported that during the first attempt, the cyclic was positioned excessively forward. During the second attempt, the cyclic was positioned excessively rearward, leading to the main rotor blade striking the tailboom.
Aircraft and Personnel
The aircraft involved was a rotorcraft (as evidenced by the main rotor and tailboom). The occupants were a flight instructor and a commercial pilot. The purpose of the training was to prepare for the commercial pilot's flight instructor check ride.
Subsequent Actions
The incident resulted in damage to the tailboom assembly. No further details about the aftermath or any injuries were provided in the source.