What happened
On May 31, 2014, at approximately 11:30 UTC, an L-13A glider, registration OK-0913, was performing a training maneuver at Jičín Airport (LKJC). The flight, operated by Aeroklub Jičín, involved a pilot and an instructor practicing landing in a restricted area. The flight plan involved a landing point on the grass field near the threshold of runway 12.
During the final approach, the pilot maintained an indicated airspeed of approximately 80 km/h and utilized air brakes to manage the descent. As the aircraft approached the landing zone, it was flying over a field of tall sugar beets. Due to a sudden wind gust, the glider experienced a sudden loss of altitude, dropping to approximately 2 meters above the vegetation. The left wing of the aircraft struck the crops, causing the glider to yaw sharply to the left. The aircraft subsequently struck the ground heavily on its main landing gear, skidding approximately 20 meters across the grass before coming to a halt.
The investigation
The ÚZPLatic investigation examined the flight sequence, the meteorological conditions, and the technical state of the aircraft. Investigators confirmed that the crew was properly licensed and medically certified, and that the aircraft was airworthy with a valid inspection. Meteorological data showed light winds from 310–340 degrees at 10–12 knots and clear visibility.
Technical analysis of the L-13A revealed significant structural damage caused by the impact with the ground, including a broken left wing approximately one meter from the wingtip, deformed skin, and damage to the wing ribs and control surfaces. The investigation also noted that the pilot's approach height was insufficient to clear the obstacle safely.