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Saturday, August 2, 2014

Helipad Lighting Clearly Marks Landing Surfaces

By Imelda Reid


All helicopters utilize landing pads and platforms designated just for them. These pads have helipad lighting as well to aid in their safe and accurate usage. Additionally, all landing areas display large markings that relay necessary information to pilots who need a place to land.

Landing area lighting is usually arranged in a circle or square around the touchdown and lift-off area, known as TLOF. Around this area is another set of lights that encompasses the TLOF. This is overall area is called the final approach and take-off area, or FATO. The International Civil Aviation Organization, along with the Federal Aviation Administration, recommends that all the lights be white. Years ago, lights were standardly yellow or amber, and are often still preferred in certain places.

The variance in color of these lights depends on the jurisdiction and owner. They used to be brightly glowing as well, but are now offered as diodes with brightness controls. In addition to this lighting, the TLOF and FATO areas can also implement surface flood lights or lead-in lights for ground landing pads. In all situations, lighted wind cones are required.

Pilots are provided with automated ground-based control to change the lighting with radio control. Also, while airports use 6.6A direct current powers, the lights on helipads utilize AC power instead. The ICAO and FAA organizations recommend that helipads have visual slope guidance systems, but this is often ignored because these systems are quite costly.

Many heliports and airports have helipads because they offer fuel, air traffic control, and service facilities that are all useful for aircraft. However, it is very costly to place so many helipads in these areas, and there is often not enough space for a lot. Police departments, however, have specific helipads on both these areas where they can place police helipads. Office towers have helipads on roofs for air taxis or emergency services like evacuations. Oil rigs and naval ships will often have helipads as well for transport and supplies.

Trauma patients and patients who live in areas without hospitals or appropriate care all require quick transport to a competent hospital. The MEDEVACs and air ambulances usually bring these patients to hospitals while using the helipads. Most hospitals in urban environments have these landing pads on the roofs.

Helipads are often issued location identifiers along with a large letter "H", but this isn't the case for every helipad. The FAA, ICAO, TC, and IATA are all U. S. Based organizations that issue these identifications. Helipads aren't restricted to one identifier, and may have multiple differently formatted and named ones.

A large letter "H" is usually marked inside a circle and placed right in the middle of a helipad. This way, they are visible high up from the air. Helipads, however, aren't always concrete-based, as forest fire fighters will often build temporary timber ones to receive supplies. Helipads can also be built with rig mats, but only if it can withstand situations like ice accumulation. A rooftop helipad will also provide a two-digit number representing the weight limit, and a second number representing the maximum rotor diameter.




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