UFC 3-535-01
17 November 2005
Figure 6-4. Obstruction Lights on Buildings
B
A
D
C
A
E
B
A,B = 45M - 90M (150FT - 300FT)
C,D,E < 45M (150FT)
6-4
LIGHTING VERSUS DAY MARKING
Flashing white obstruction lighting may be used instead of obstruction marking on
structures less than 60 meters (200 feet) tall with major command approval. Do not
install these lights in clear zones or on objects in the immediate vicinity of runways
where approaching pilots may mistake them for other flashing white lights.
6-5
WAIVERS
The decision to waive obstruction lighting requirements must be coordinated with
appropriate civil aviation authorities to ensure there is no negative impact to civil
aviation. (See paragraph 1-10 for Air Force waivers and paragraph 1-11 for US Army
waivers.)
6-6
EQUIPMENT
For various obstruction light fixtures see paragraph 13-13. The equipment shown meets
the requirements of the FAA.
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