Obstruction light - for tall buildings and airports

Warn pilots of potential hazards and ensure flight safety

Marking of aviation obstacles

Obstacle lights are beacons used to mark obstacles in aviation. They serve as a visual warning for pilots to drive or fly safely around obstacles. These obstacles can be buildings, towers, antennas, masts, bridges or other tall structures that could pose a potential hazard to aircraft.

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What directives are there?

In Germany the Ministry for Transport and Construction Development (BMVBS) issues the regulations covering obstruction lighting on buildings. The ICAO regulations regarding the methods of marking and lighting aviation obstacles can be found in ICAO Annex 14.

"Low intensity obstacle beacon type A": a red permanent night-time warning beacon for fixed obstructions with a brightness of 10 cd.
"Low intensity obstacle beacon type B": a red permanent night-time warning beacon for fixed obstructions with a brightness of 32 cd.