What is a recommended separation distance for non-cargo aircraft light placements?

The recommended separation distance for non-cargo aircraft light placements is 5 meters. This distance is crucial for ensuring the safety and effective operation of helicopter landing zones (HLZs). A 5-meter separation helps to prevent interference with the helicopter's rotor downwash and ensures that the lighting is effectively visible to pilots without posing a hazard to the operation of the aircraft.

A closer placement of lights can maintain visibility while avoiding the risk of accidents or damage, which could occur with wider separation distances that might reduce the effectiveness of the lights in guiding pilots. The goal of this guideline is to enhance safety and operational efficiency during landings and takeoffs.