Which of the following actions should be taken when setting up a helicopter landing zone?

When setting up a helicopter landing zone (LZ), ensuring that there are no power lines or obstructions is vital for safety. Helicopter operations are significantly impacted by the surrounding environment, and power lines pose a serious risk of collision, which can lead to catastrophic accidents. By choosing a site free from obstructions, you create a safer environment for the helicopter to land and take off, reducing the chances of accidents during these critical phases of flight.

The other considerations, such as the condition of the landing surface and the space required for a safe landing, are important but secondary to the presence of hazards. For instance, while soft fields might be beneficial for landing, they might not be safe if they also contain overhead hazards. Similarly, a crowded area would increase the risk of injury to bystanders and also complicate the landing process. Finally, using a small area might seem like a way to minimize risk, but it actually limits the helicopter's ability to land safely and maneuver if necessary. Proper preparation and a clear area free from hazards take precedence in establishing a safe landing zone.