Which approach should not be used if the survivor is wearing or entangled in a parachute?

When a survivor is wearing or entangled in a parachute, the underwater approach should be avoided due to the inherent risks involved. This approach requires submersion, which could complicate matters for a survivor who is already in a precarious situation with their parachute. The parachute can create drag and hinder the survivor's ability to swim or keep their head above water, making an underwater intervention potentially dangerous.

By opting for a surface approach, rescue boat approach, or assisted approach, rescuers can maintain visibility and better assess the situation. These methods allow for securing the survivor while keeping them on the water's surface, which is essential when dealing with an entangled parachute. This strategy enhances the chances of a successful rescue without the added risk of complications that can arise from an underwater approach.