What happened
On August 10, 2013, at Klatovy Airport, a skilled skydiver was performing a series of jumps as part of a training program focused on high-speed landings, known as 'swooping'. The individual had successfully completed three prior jumps that day, practicing 90-degree turns. During the final planned jump from 1,500 m AGL, the skydiver attempted a more advanced 270-degree turn using a single front stabilizer line.
After a period of freefall, the main parachute, a Raptor 135, deployed correctly and functioned as intended. The skydiver initiated a steep turn at approximately 180 degrees to approach the landing point. However, the maneuver resulted in a rapid increase in descent speed. The skydiver was unable to arrest this steep descent in time, leading to a high-speed impact with the ground. The individual sustained fatal injuries and passed away at the hospital.
The investigation
The ÚZPLN investigation examined the skydiver's equipment, the meteorological conditions, and the sequence of the maneuver. The investigation confirmed that the parachute equipment, including the main parachute, reserve parachute, and the automatic activation device (AAD), was fully functional and compliant with all regulations. The weather at the time of the accident was favorable, with visibility exceeding 10 km and light winds.
Investigators also reviewed the skydiver's experience and training. The individual held a Category C license and was an experienced practitioner, having performed numerous high-speed landings in recent months. Medical examinations ruled out any underlying health issues or the influence of alcohol or drugs as contributing factors to the accident.
Findings
- The primary cause of the accident was the failure to arrest the high-speed descent due to initiating the 270-degree turn at an insufficient altitude.
- The skydiver's electronic altimeter settings, which were configured for 90-degree turns, were likely inadequate for the higher-speed 270-degree maneuver, leading to an error in altitude estimation.
- The skydiver failed to interrupt the high-speed maneuver in time to avoid ground impact.