ABOUT
The HIFR Lights are mounted so that they identify and assist any approaching pilot, to line up with the HIFR area.
The general OBSTRUCTION/OBSTACLE Lights are mounted, so that they identify to any approaching pilot the outline of the vessels superstructure, which would present a hazard to flying. Obstruction Lights identify fixed obstructions on the superstructure. Obstacle Lights identify moving obstacles, e.g. a crane.
