Standard :
ICAO

 FAA

MH-T 6012-1999 Aviation Obstruction Light Technical Standards for Airfield Area of Civil Airports International Standard and Construction of Airports

FAims

To set the highest point and edge point of tall buildings for marking it to air traffic.

Method

The installation of aviation obstruction light should makes it easier to view the outline of the tall buildings from all directions, and install aviation obstruction light every 45m in horizontal direction. Generally speaking, the aviation obstruction light should be installed on the top of the buildings.

1. For Buildings between 105m to150m, install a Type A medium intensity aviation obstruction light (LM001 or ABC-7M) on the top, and install a low intensity aviation obstruction light (LS701, LS702, LS707 or LS708) on the middle.
2. 2 For Buildings between 45m to105m, install a Type B medium intensity aviation obstruction light (LM001 or ABC-7M) on the top,  and install a low intensity aviation obstruction light(LS701, LS702, LS707 or LS708)on the middle..
3. 3 For Buildings less than 45m, install a double aviation obstruction light (LS303, LS307-2, or LS308) or install a low intensity aviation obstruction light(LS701, LS702, LS707 or LS708) on the top