Different Forms Of Helipad Lighting

By Jody Leach


Surface level helipads are those that are located at the ground level. Unlike other forms of helipads, they tend to use more space. There are various helipads in a typical heliport. Helipads are smooth, flat and are devoted for takeoff and landing of helicopters. Whereas they are located close to conventional airports, they have to be situated in the lesser used places. Helipad lighting is very crucial and many types of lights are used.

When pilots have difficulties identifying the pilot, beacon lights are used. Beacons are provided in the event that long range visual guidance is deemed necessary. These lights are meant to be located close to the helipad, specifically at elevated locations to ensure pilots are not dazzled at close range. The lights produce equally spaced white flashes. These flashes are normally in the format of letter H of the Morse code.

Beacon lights show at all angles of azimuth, with the intensity being greater than 2500 Cd. The brilliancy control setting should be 3, 10 and 100 percent. Floodlights in helipads are for the illumination of touch down and the area of lift off. These lights are so located as to avoid glare to pilots or the personnel working around the area. The horizontal luminance should be averagely 10 lux. Floodlights also help in illumination of obstacles. Floodlights for obstacles should have a luminance of at least 10cd/m2.

The edges of the final approach and take off area, FATO, are installed with FATO lights. These are omnidirectional, steady, white and usually have intensity of more than 100 candelas. The brilliancy control is similar to that of beacon lights, that is 10, 30 and 100 percent. These are supposed to be placed at the FATO edges at uniform spacing.

The edges of the TLOF are lit with TLOF lights. TLOF stands for touchdown and lift-off area. These lights are steady, omnidirectional and have intensity that exceeds 30 candelas. Ideally, they are placed at the TLOF edges within a distance of 1.5m off the edge. For surface-level heliports, the lighting is placed uniformly at intervals that do not exceed 5m. The lights that are rectangular should be 12 and the circular ones 14.

Approaching lights are for the display of preferred direction of approach. They are located in a straight line along the direction that is preferred. They shall be omnidirectional, steady, white or flashing. Flashing lights are useful in the event that identification of the heliport is difficult because of light in the surroundings. In case the approach light system for non-precision FATO is provided, the system is not supposed to be less than 210m.

To approach certain areas before proceeding to the TLOF, aiming point lights should be used. They are white and steady, with an intensity that exceeds 100 cd. Brilliancy control setting is 10, 30 and 100 percent.

For the display of the windsock and direction of the wind, windsock lights are used. Heliports are supposed to have at least one indicator of wind direction. The one to be used at night has to be illuminated.




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