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 A and B 150 feet 45 meters 225 feet 67.5 meters 240 feet 72 meters 300 feet 90 meters 400 feet 120 meters .. ..
visibility minimums
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 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
visibility minimums
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: Dimensions and Slopes for Protective Areas and Surfaces
Airplane Design Group
I II III IV V VI
Taxiway centerline to
parallel taxiway/ 69 feet 105 feet 152 feet 215 feet 267 feet 324 feet
taxilane centerline 21 meters 32 meters 46.5 meters 65.5 meters 81 meters 99 meters
Fixed or movable object 44.5 feet 65.5 feet 93 feet 129.5 feet 160 feet 193 feet
13.5 meters 20 meters 28.5 meters 39.5 meters 48 meters 59 meters
Taxilane centerline to
parallel taxilane 64 feet 97 feet 140 feet 198 feet 245 feet 298 feet
centerline 19.5 meters 29.5 meters 42.5 meters 60 meters 74.5 meters 91 meters
Fixed or movable object 39.5 feet 57.5 feet 81 feet 112.5 feet 138 feet 167 feet
12 meters 17.5 meters 24.5 meters 34 meters 42 meters 51 meters
3.8.10* Line.of.sight standards for taxiways are not provided in U.S. practice, but there is a requirement that the sight distance along a runway from an intersecting taxiway must be sufficient to allow a taxiing aircraft to safely enter or cross the runway.
3.8.11* Transverse slopes of taxiways are based on aircraft approach categories. For categories C and D, slopes are 1.0.1.5 percent; for A and B, 1.0.2.0 percent.
3.11.5 The runway centerline to taxi.holding position separation for code 1 is 38 meters for non.precision operations and 53 meters for precision. Code 3 and 4 precision operations require a separation of 75 meters, except for “wide bodies,” which require 85 meters.
Precision Approach Non.precision Instrument Approach Visual Runway
All runways All runwaysa Runways other than utilityb Utility runwaysd Runways other than utility Utility runways
Width of inner edge 305 meters 305 meters 152 meters 152 meters 152 meters 76 metersc
Divergency (each side) 15 percent 15 percent 15 percent 15 percent 10 percent 10 percent
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