To prepare for a helicopter rescue, the EMR should establish a landing zone of how many meters?

The appropriate size for a helicopter landing zone is crucial for ensuring the safety of all individuals involved, including the helicopter crew, the patients, and any bystanders. A landing zone that measures 30 by 30 meters provides sufficient space for the helicopter to land safely and allows for a buffer around the landing area. This size accommodates the rotor wash and minimizes the risk of injury from debris being displaced by the helicopter's rotors, which is particularly challenging in varied terrain.

Establishing a landing area of this dimension also allows for safe maneuvering should the helicopter need to take off again quickly, as well as providing space for emergency responders to operate efficiently. Thus, a landing zone of 30 by 30 meters is a well-recognized standard in emergency response protocols, ensuring the safety and effectiveness of the helicopter rescue operation.