During a deployment malfunction, how should a jumper react if there is no good reserve available?

When faced with a deployment malfunction and no good reserve is available, the most appropriate action is to initiate a cutaway procedure immediately. The cutaway procedure is a critical emergency response that allows the jumper to detach the malfunctioning main parachute to prevent further complications and optimize their chance of a safe landing.

In situations of malfunction, time is of the essence. By promptly executing the cutaway, the jumper removes the risk posed by the malfunctioning canopy, which could lead to uncontrollable descent or collisions. This procedure focuses on maintaining as much control over the descent as possible, even if no reserve parachute is available.

Other options, such as waiting to reach ground level, attempting to steer a malfunctioning parachute, or signaling for assistance, may delay necessary actions and could lead to injury or fatality. Each of these alternatives lacks the immediacy and direct benefit of executing a cutaway, which is specifically designed to enhance the jumper's safety in dire circumstances.