What consequence can arise if the front lines of a PPC are overstretched?

When the front lines of a Power Parachute (PPC) are overstretched, the angle of attack of the wing often increases beyond safe limits. This can potentially lead to a stall condition. In simple terms, as the angle of attack rises, the airflow over the wing becomes disrupted, causing a loss of lift and an increase in drag. When a stall occurs in a powered parachute, it can render the aircraft difficult to control, leading to a dangerous situation, particularly if it occurs during takeoff or landing phases.

Conversely, overstretching the front lines does not lead to increased lift capacity, improved stability in turns, or reduced drag. Instead, it compromises the wing's ability to generate lift effectively, which is why the angle of attack becoming too high and leading to a stall is the primary concern in this scenario.