What should a jumper do if there are broken lines or other damage to the parachute?

When encountering broken lines or damage to the parachute, the prudent first step is to determine whether the parachute remains controllable and if the jumper can still execute a flare for landing. This assessment is critical; it allows the jumper to evaluate the situation and make an informed decision about their next actions.

Understanding controllability involves checking the parachute's response to inputs. If the parachute is still operational but with limited functionality, the jumper may be able to steer and land safely. By assessing the ability to flare, the jumper can gauge whether they will have enough altitude to perform a safe landing or if they need to activate their reserve parachute.

This approach underscores the importance of calm and rational decision-making while in freefall or under canopy. Immediate deployment of the reserve parachute may not always be necessary and could lead to further complications if the main parachute is still functional to some extent. Since mid-air repairs of a parachute are impractical and dangerous, it's essential to focus on evaluating the situation before taking any further action.