What is the minimum size of a landing zone for helicopter rescue efforts occurring at night?

The minimum size of a landing zone for helicopter rescue efforts occurring at night is crucial for ensuring the safety and efficiency of the operation. A landing zone of 100 feet by 100 feet provides a spacious area that allows for the maneuvering of the helicopter and accounts for any potential obstructions or changes in wind conditions, which are more difficult to assess at night.

At night, visibility is reduced, increasing the need for a larger safety buffer around the landing area. The larger dimensions associated with a 100-foot square ensure that ground personnel have enough space to operate safely while maintaining a distance from the helicopter's flight path. Additionally, this size allows for any necessary adjustments by the pilot during landing, who may have limited visibility.

In summary, the selection of a 100-foot by 100-foot landing zone reflects best practices to accommodate these challenges and ensure the safety of both the helicopter crew and ground personnel during night operations.