What happened
On May 21, 2021, an SZD 51-1 Junior glider, registration SP-3307, was performing a training flight at the Rudniki (EPRU) airfield. Following an initial flight, the pilot prepared for a second winch-assisted takeoff. As the winch began to tension the cable and the glider commenced its takeoff roll, the right wing caught on tall grass, which had grown to approximately 50 cm following heavy rains.
This contact caused the glider to veer sharply to the right. As the pilot attempted to pull back on the control stick to lift the aircraft, the trim released to a rearward position. The glider lifted off but rotated sideways relative to the takeoff direction, eventually rolling onto its back. The aircraft struck the ground in a flat configuration, resulting in the destruction of the forward fuselage and cockpit area. The towline released upon impact.
The investigation
The PKBWL investigation examined the airfield conditions, the aircraft's technical state, and the pilot's flight history. Investigators noted that the takeoff was being conducted from a grass runway where the vegetation was significantly overgrown. The investigation also reviewed the aircraft's mechanical condition, specifically the position of the trim handle, and the pilot's experience level and flight logs prior to the accident.
Findings
- The primary cause of the accident was the failure to release the towline after the wing caught the tall grass and the aircraft lost directional control.
- High grass on the takeoff path acted as a physical obstruction, catching the leading edge of the right wing and inducing a yawing motion.
- The pilot had relatively low flight experience, with approximately 51 hours of flight time.
- The takeoff was being performed from a runway covered in unmaintained, tall vegetation.
- The pilot sustained serious injuries in the crash but remained conscious until emergency services arrived.