What happened
On May 27, 2017, a skydiver was performing a jump as part of task RW-2 near the Chrcynno aerodrome (EPNC). After deploying the main Silhouette 170 parachute at an altitude of approximately 1,0/00 meters, the skydiver discovered a malfunction. Specifically, a one-meter section of the suspension lines on the right side was tangled near the slider, which prevented effective steering of the canopy.
In response to the loss of control, the skydiver executed emergency procedures by cutting away the main canopy and deploying the reserve parachute. The landing was completed on the operational part of the airfield, and the skydiver sustained no injuries.
The investigation
An investigation conducted by the user examined the equipment following the incident. An inspection of the main parachute canopy revealed no structural defects, and the steering toggles were found to be in their correct positions. No irregularities were found regarding the technical condition of the suspension lines, risers, or steering lines.
Findings
The investigation determined that the tangled lines were likely caused by improper routing of the lines through the rubber deployment rings or the lines slipping out of these rings during the packing process.
Safety action
Following the incident, the rubber loops used for securing lines in the deployment bag were replaced. Personnel responsible for packing the parachute were instructed to verify the grouping of the suspension and steering lines during the packing process and to ensure that steering toggles are securely attached. Additionally, instructions were issued to ensure that lines are distributed evenly within the deployment bag to prevent uneven tension.