High Intensity Aviation Obstruction Light/ aircraft lighting system, ICAO HIOL Type A/AB

Wetra is a registered trademark of Demos Endustriyel Ltd. Company. In the terms of LED obstruction lights, Wetra is the market leader in domestic market, Turkey. Also Wetra aviation obstruction lights are mostly exported to Middle East, Latin America, North Africa, Australia and Europe. Wetra become one of the most preferred aircraft and marine lights brand in national and domestic market with innovative perspective. The expert team of Wetra closely follow the international regulations and local regulations. We design systems according to ICAO (International Civil Aviation Organization), FAA (Federal Aviation Authority), SHGM (Turkish Civil Aviation Organization) standarts. In addition to these regulations we can also design a system for each countrys regulations.

By the following the latest developments in the national and international markets and we have been able to increase the quality of our production and service quality and have become a reliable company in the telecomunication and aircraft warning lights market.

·        What does aviation obstruction light mean?

Aviation obstruction lights are used to reduce the hazards to all kind of aircraft such as airplanes, helicopters, drones etc. by indicating the presence of obstructions.

These obstructions could be fixed or mobile objects.  should be marked in order to avoid collision risks near airports or heliports.

Also, it might be necessary to mark high structures which are in airplane or helicopter air traffic zone. These obstacles could be tall buildings, chimneys, power transmission line pylons, wind turbines, bridges etc.

Aviation obstruction lights also called as aircraft warning lights are lighting devices that are installed to high structures and are used as collision avoidance measures. Aviation obstruction lights make structures more visible to passing aircrafts such as airplanes, helicopters, drones and are usually used at night, although they can be used during the day as well. The intensity of aviation obstruction lights could be low, medium and high depending on the candelas

·        Why should we use an Aviation obstruction light?

We are in the 21st century, the aviation sector has developed a lot and some international organizations, such as ICAO and FAA, have introduced some rules and standarts to ensure flight safety. For example ICAO Annex 14, FAA and TSHK standarts.

You do not have to use an aviation obstruction light (AWL) for every building, tower, crane, chimney or other high structures. If any structure which is higher than 45m, it needs to be visual marking with aviation obstruction lights at the night time. Also If it exceeds 150 m, it has to be marked day and night time.

·        Is there a national or international regulation / rule on this subject?

Yes, ICAO Annex-14 chapter 6 and FAA Advisory Circular regulations lead us about how to mark/and or light tall structures and aviation obstruction lights.

·        What type of light should be used in which situations?

Low intensity lights should be used for structure with H ≤ 45 m during night time, if those are considered inadequate, than medium – high intensity lights should be used.

Medium intensity lights type A,B or C should be used to lit extensive object (group of buildings or tree) or structure with 45 m < H ≤ 150 m.

Note: Medium intensity lights, type A and C should be used alone, whereas medium intensity lights, Type B should be used either alone or in combination with LIOL-B.

High intensity type A, should be used to indicate the presence of an object if its H > 150 m and an aeronautical study indicates such lights to be essential for the recognition of the object by day.

·        Is there a specific statement about chimney/stack in the regulation?

  A chimney is a typical cylindrical and vertical structure that provides ventilation for hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere.

ICAO 6.3.12 says : In the case of chimney or other structure of like function, the top lights shall be placed sufficiently below the top so as to minimize contamination by smoke etc.

3 pcs aviation obstruction lights might be used for chimneys/stacks with circular base < 6m

4 pcs aviation obstruction lights might be used for chimneys/stacks with circular base > 6m

But If the diameter of chimney exceeds 31m, 6 pcs Aviation obstruction lights shall be used on the top.

Also If the diameter of chimney exceeds 61m, 8 pcsAviation obstruction lights shall be used on the top.

·        How is the installation, feeding and maintenance of AWL system?

 We provide a guidebook for customer to install the system properly regarding to our design. It includes drawings, cable details and any other important information which helps to installer.

 Also, Operation and Maintenance Manual Book about aviation lighting system is released when the production process is done with customers. We are also able to guide you how to install the system.

·        How about the IP classification?

All Wetra lights are classified as IP65, IP66 or IP67. According to your request, IP degree can be increased.

·        Should we use AWL in day-time?

If structure is not marked and its height more than 45m, it shall be lighted during the daytime with a Aviation obstruction lights Type A which has candela at least 20.000 candela.

 All the items are produced based on your projects that the reason why packing deimensions may change upon the items number.

But the goods are sent by wooden boxes.