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C and D: 1.0 − 1.5 percent
3.2.2 The U.S. does not require that the minimum combined runway and shoulder widths equal 60 meters.
The widths of shoulders are determined independently.
3.2.3* The transverse slope on the innermost portion of the shoulder can be as high as 5 percent.
3.3.3
3.3.4*
3.3.5*
A strip width of 120 meters is used for code 3 and 4 runways for precision, nonprecision, and
non−instrumented operations. For code 1 and 2 precision runways, the width is 120 meters. For
non−precision/visual runways, widths vary from 37.5 meters up to 120 meters.
3.3.9* Airports used exclusively by small aircraft (U.S. Airplane Design Group I) may be graded to
distances as little as 18 meters from the runway centerline.
3.3.14* The maximum transverse slope of the graded portion of the strip can be 3 percent for aircraft
approach categories C and D and 5 percent for aircraft approach categories A and B.
3.3.15* The U.S. does not have standards for the maximum transverse grade on portions of the runway strip
falling beyond the area that is normally graded.
3.3.17* Runways designed for use by smaller aircraft under non−instrument conditions may be graded to
distances as little as 18 meters from the runway centerline (U.S. Airplane Design Groups I and II).
3.4.2* For certain code 1 runways, the runway end safety areas may be only 72 meters.
3.7.1*
3.7.2*
The U.S. does not provide Standards or Recommended Practices for radio altimeter operating areas.
3.8.3* The U.S. specifies a 6 meter clearance for Design Group VI airplanes.
3.8.4* The taxiway width for Design Group VI airplanes is 30 meters.
3.8.5* The U.S. also permits designing taxiway turns and intersections using the judgmental oversteering
method.
31 JULY 08
AIP
United States of America
GEN 1.7−51
15 MAR 07
Federal Aviation Administration Nineteenth Edition
3.8.7* Minimum separations between runway and taxiway centerlines, and minimum separations between
taxiways and taxilanes and between taxiway/taxilanes and fixed/moveable objects are shown in the
tables that follow. Generally, U.S. separations are larger for non−instrumented runways, and smaller
for instrumented runways, than the Annex. Values are also provided for aircraft with wingspans up
to 80 meters.
Minimum Separations Between Runway Centerline and Parallel Taxiway/Taxilane Centerline
Operation
Aircraft
Approach
Category
Airplane Design Group
I1 I II III IV V VI
Visual runways and runways
with not lower than 3/4−statute
mile (1,200 meters) approach
visibility minimums
A and B
150 feet 45
meters
225 feet
67.5 meters
240 feet
72 meters
300 feet
90 meters
400 feet
120 meters −− −−
Runways with lower than
3/4−statute mile (1,200 meters)
approach visibility minimums
A and B
200 feet
60 meters
250 feet
75 meters
300 feet
90 meters
350 feet
105 meters
400 feet
120 meters −− −−
Visual runways and runways
with not lower than 3/4−statute
mile (1,200 meters) approach
visibility minimums
C and D −−
300 feet
90 meters
300 feet
90 meters
400 feet
120 meters
400 feet
120 meters
4002 feet
1202 meters
600 feet
180 meters
Runways with lower than
3/4−statute mile (1,200 meters)
approach visibility minimums
C and D −−
400 feet
120 meters
400 feet
120 meters
400 feet
120 meters
400 feet
120 meters
4002 feet
1202 meters
600 feet
180 meters
1These dimensional standards pertain to facilities for small airplanes exclusively.
2Corrections are made for altitude: 120 meters separation for airports at or below 410 meters; 135 meters for altitudes between 410 meters and
2,000 meters; and, 150 meters for altitudes above 2,000 meters.
Minimum Taxiway and Taxilane Separations:
Airplane Design Group
I II III IV V VI
Taxiway centerline to
parallel taxiway/
taxilane centerline
Fixed or movable object
69 feet
21 meters
44.5 feet
13.5 meters
105 feet
32 meters
65.5 feet
20 meters
152 feet
46.5 meters
93 feet
28.5 meters
215 feet
65.5 meters
129.5 feet
39.5 meters
267 feet
81 meters
160 feet
48 meters
324 feet
99 meters
193 feet
59 meters
Taxilane centerline to
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