West Coast EMT Block One Exam

What is the best method for marking the perimeter of a landing zone for a medical transport helicopter?

1. Use yellow caution tape to mark off the LZ perimeter.

2. Ask bystanders to stand at all four corners of the LZ.

3. Place four flares 100 feet apart in an "X" pattern.

4. Use weighted cones to mark all four corners of the LZ.

The correct answer is: Use weighted cones to mark all four corners of the LZ.

Using weighted cones to mark all four corners of the landing zone (LZ) is the best method because it provides a clear and visible indication of the boundaries that is easy to see from the air. Weighted cones are stable and can withstand wind, ensuring they remain in place during the landing process. This method effectively defines the perimeter for both the helicopter pilot and the crew, minimizing the risk of accidents or miscommunication during the helicopter’s approach and landing. In addition, weighted cones can be recognized easily by personnel on the ground who need to maintain a safe distance and be aware of the designated landing area. They are also portable and can be quickly deployed when time is of the essence in emergency situations. While using flares can help in certain scenarios to increase visibility, their deployment can create hazards such as fire risks, and they may not remain in position effectively. Similarly, asking bystanders to stand at corners poses significant safety issues; they may not be able to maintain their positions due to the noise and wind generated by the helicopter. Lastly, yellow caution tape might not provide a clear visual signal from an aerial viewpoint, and it could be blown around in the wind, leading to confusion. Therefore, using weighted cones is the most effective and safest approach for marking