How far should landing lights be placed from the TDP without a Standard Light?

The appropriate distance for placing landing lights from the Touchdown Point (TDP) without a Standard Light is 25 meters. This distance is significant as it provides clear illumination of the landing area while maintaining a safe distance from the aircraft's approach path.

Placing the lights too close to the TDP could create glare or distraction for the pilots during landing, while too far away might not provide adequate visibility of the landing zone. Therefore, 25 meters strikes a balance that enhances safety and effectiveness while guiding pilots during landing operations. This standard is also based on best practices established in aviation manuals and operational guidelines to ensure that landing zones are safely illuminated for successful helicopter landings.