The obstacles should be marked with the highest point and the edge of obstacles (visual height and visual width). The object should be able to be marked at every azimuth angle. The obstruction lights are marked to indicate the presence of obstacles to reduce the harm to the aircraft, but it does not necessarily reduce limites that obstacles caused to the flight.

If the top of the building is more than 45 meters above the surrounding ground, obstacle lights must be added in the middle layer, and the distance of the middle layer must not be greater than 45 meters or as equal as possible (super-high buildings above 100 meters in the city, In particular, is suggested to add obstacle lights in the middle layer). When buildings located near cities and residential areas are equipped with middle-level obstacle lights, it should be to avoid disturbing the people. It is generally required that only stray light can be seen from the ground.

Obstacle lights installed in a large-scale building group should be able to see the outline of the object from all aspects. The horizontal direction can also refer to the installation of obstacle lights at a distance of about 45 meters.

How to set the specific building height as follows:

1. Fixed objects less than 45 m above the ground in the surrounding area

2. Objects that are not too large in area and are less than 45 m above the surrounding ground should be marked with A-type or B-type low-intensity obstacle lights.

3. Where the use of Type A or Type B low-intensity obstacle lights may be insufficient or special warnings is needed in advance, medium-intensity or high-intensity obstacle lights should be used.

4. B-type low-intensity obstacle lights should be used alone or in combination with B-type medium-intensity obstacle lights according to 5.

5. Large-area objects should be marked with medium-intensity obstacle lights of type A, B or C. Type A and C medium-intensity obstacle lights should be used alone, while type B medium-intensity obstacle lights should be used alone or in combination with type B low-intensity obstacle lights.

Note: A group of buildings are regarded as large-area objects.

6. Objects higher than the surrounding area by 45 m but less than 150 m.

7. When using A-type, B-type or C-type medium-intensity obstacle lights to indicate light, Type A and C medium-intensity obstacle lights should be used alone, while type B medium-intensity obstacle lights should be used alone or in combination with type B low-intensity obstacle lights.

8. The top of the obstacle marked by the A-type medium-intensity obstacle light is 105 m higher than the surrounding ground or higher than the top elevation of nearby buildings (when the obstacle to be marked is surrounded by multiple buildings), obstacle lights should be added in the middle. The additional middle-level obstacle lights should be installed at an equal distance of not more than 105 m as far as possible between the top obstacle lights and the ground or nearby building top elevation.

9. The top of the obstacle marked by Type B medium-intensity obstacle light is higher than the surrounding ground by more than 45 m or higher than the top elevation of nearby buildings (when the obstacle to be marked is surrounded by multiple buildings) , obstacle lights should be added in the middle. The additional middle-level obstacle lights shall be alternating B-type low-intensity obstacle lights and B-type medium-intensity obstacle lights which should be installed at an equal distance of not more than 52 m as far as possible between the top obstacle lights and the ground or nearby building top elevation.

10. When the top of the obstacle marked by Type C medium-intensity obstacle light is 45 m higher than the surrounding ground or 45 m higher than the top of the nearby buildings (when the obstacle to be marked is surrounded by multiple buildings), obstacle lights should be added in the middle. The additional middle-level obstacle lights should be installed at an equal distance of not more than 52 m as far as possible between the top obstacle lights and the ground or the top elevation of nearby buildings.

11. Where Type A high-intensity obstacle lights are used, the obstacle lights should be evenly placed on the ground at intervals not greater than 105 m. When an object is required to be marked with light, one or more low, medium or high light intensity Obstruction lights should be placed as close as possible to the top of the object, but when the object to be marked is surrounded by multiple buildings, the top elevation of the nearby building can be used instead of the ground to determine the number of obstacle lights.

12. Objects 150 m above the ground or surrounding ground level

13. Objects greater than 150 m above the surrounding ground should be marked with high-intensity obstacle lights to be distinguished during the day, and type A high-intensity obstacle lights should be used.

14. Where type A high-intensity obstacle lights are used, the obstacle lights should be evenly placed on the ground at intervals not greater than 105 m. When an object is required to be marked with light, one or more low, medium or high light intensity Obstruction lights should be placed as close to the top of the object as possible, but when the object to be marked is surrounded by multiple buildings, the top elevation of nearby buildings can be used instead of the ground to determine the number of obstacle lights.

15. If the relevant authorities believe that the use of Type A high-intensity obstacle lights at night may cause dazzling to drivers near the airport (within a radius of about 10 km) or cause major problems affecting the environment, then Type C medium-intensity obstacle lights should used alone, and B-type medium-intensity obstacle lights should be used alone or in combination with B-type low-intensity obstacle lights.

16. When using A type medium-intensity obstacle lights to indicate obstacles, obstacle lights should be added in the middle. The additional middle-level obstacle lights should be installed at an equal distance of not more than 105 m as far as possible between the top obstacle lights and the ground or the top elevation of nearby buildings.

17. When an obstacle is marked by a B-type medium-intensity obstacle light, an obstacle light should be added in the middle. The additional middle-level obstacle lights shall be type B low-intensity obstacle lights and type B medium-intensity obstacle lights.

Depending on the situation, it should be set at an equal distance of not more than 52 m between the top obstacle lights and the ground or the elevation of the top of nearby buildings.

18. When using C-type medium-intensity obstacle lights to mark obstacles, obstacle lights should be added in the middle.

The additional middle-level obstacle lights should be installed at an equal distance of not more than 52 m as far as possible between the top obstacle lights and the ground or the top elevation of nearby buildings.

Shenzhen Anhang Technology Company Limited

Anhang Technology(HK) Limited

(Ms.) Dana Xiong

Mob : +8615013635584(available on Wechat, Whatsapp)

Email: dana@annhung.com

Aviation Obstruction Light, LED Marine Light, Solar Airport Light, Helipad Light.