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 MIL-HDBK-1021/1
TABLE 10 (Continued)
Aircraft Taxiways (Fixed- and Rotary-Wing Aircraft)
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Item
Criteria
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Shoulder treatment
For fixed-wing aircraft, same as
outer 140 feet of the runway
shoulder; for rotary-wing aircraft,
and in areas where turf is difficult
to establish, pave shoulders 25 feet
each side.
Sight distance:
Class A Runway
Not applicable.
Class B Runway and
Minimum 2000 feet between eye level
Rotary-Wing
at 7 feet and an object 10 feet
above taxiway pavement.
Clearance from taxiway centerline
to fixed or mobile obstacles
(taxiway clearance line):
Class A Runway
100 feet minimum.
Definitions for
fixed and mobile
obstacles same as
described in Table
2.
Class B Runway
150 feet minimum.
Basic helicopter
Rotary-Wing
100 feet minimum.
clearance.
Increase as
appropriate for
dual use taxiways.
Grades within the clear area
(Area between taxiway shoulder
and taxiway clearance line):
Class A and B Runways
2.0% minimum to
Any direction.
10.0% maximum.
Rough grade to the
Rotary-Wing
5.0% maximum.
extent necessary
to prevent damage
to aircraft in the
event of erratic
performances.
Minimum radius (to taxiway centerline):
275 feet for fixed-wing aircraft. 150
feet for rotary-wing aircraft.
Fillets at intersections
See Figures 22 and 23.
Pavement Marking
See NAVAIR 51-50AAA-2.
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