UFC 3-535-01
17 November 2005
Figure 3-10. Light Plane Elevation Limits
420M
360M
(1400FT)
(1200FT)
APPROACH LIGHTS NOT TO BE
MOUNTED ABOVE THIS LINE
16M
(52FT)
+2.0% MAX.
+2.0% MAX.
MAX.
RUNWAY
8M (28FT) MAX.
LEVEL
6M (21FT) MAX.
15M
(51FT)
-2.5% MAX.
-1.0% MAX.
MAX.
THRESHOLD
APPROACH LIGHTS NOT TO BE
MOUNTED BELOW THIS LINE
NOTE: THE BOUNDARIES OF THE LIGHT PLANES ARE THE RUNWAY THRESHOLD, 60M (200FT)
AHEAD OF THE END LIGHT STATION, AND 60M (200FT) EACH SIDE OF CENTERLINE.
3-5.5.1.3
Every effort must be made to remove or relocate objects which penetrate
the light plane. For objects which cannot be moved, the height must keep to a minimum
and must be located as far from the threshold as possible.
3-5.5.1.4
The major command has waiver authority to adjust the slope of the light
plane beyond the allowances in this standard to avoid interference from obstacles that
can not be removed or lowered..
3-5.6
Tolerance
The tolerances for positioning steady burning MALSR lights are as follows:
3-5.6.1
Lateral tolerance of a bar is 0.15 meters (6 inches).
3-5.6.2
Distance between individual light centers in a barrette is 0.05 meters (2
inches).
3-5.6.3
Height for light centers up to 1.8 meters (6 feet) is 0.05 meters (2 inches).
3-5.6.4
Height for light centers over 12 meters (40 feet) is 0.15 meters (6 inches).
3-5.6.5
Tolerance for vertical aiming of light units is 1.0 degree.
3-5.6.6
Tolerance for horizontal aiming of light unit is 5 degrees.
3-5.6.7
Longitudinal deviation for light bars or single SFL from a designated
station is 6 meters (20 feet), except light stations may be displaced 30 meters (100 feet)
to avoid omitting a light station where obstructions cannot be removed or cleared by
acceptable clearance planes. Where a light station must be located more than 6 meters
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