What happened
On May 15, 2009, at Skuteč airport (LKSK), a student pilot was performing solo circuit training in a Robinson R22 BETA, registration OK-KFS. After successfully completing three previous solo circuits, the pilot attempted a fourth. During the final phase of a vertical landing on runway 13, the helicopter made contact with the ground but subsequently became ungrounded.
The aircraft experienced a sudden oscillation and overturned onto its right side. The impact of the main rotor blades hitting the ground caused the engine to stall. The student pilot was able to exit the aircraft through the left door. An instructor, who had been monitoring the flight via radio from the airfield, reached the scene to assist and secured the aircraft by turning off the master switch and electrical components.
The investigation
The ÚZPLN investigation focused on the sequence of events during the landing phase and the mechanical state of the aircraft. Investigators examined the wreckage, which showed significant damage to the airframe, including a deformed fuselage, broken tubular structure on the right side, and a cracked cockpit canopy. Both main rotor blades were destroyed, and the rotor mast was deformed.
Technical inspections of the Robinson R22 BETA revealed no evidence of mechanical or control system failure prior to the accident. The engine was likely producing power at the time of the critical event. The investigation also reviewed the pilot's training records, noting that the student was legally qualified to perform solo flights and had demonstrated good handling skills in previous sessions.