Quantcast Table 12. Aircraft Aprons (Fixed- and Rotary-Wing Aircraft) -Cont. - 1021_10076

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MIL-HDBK-1021/1
TABLE 12 (Continued)
Aircraft Aprons (Fixed- and Rotary-Wing Aircraft)
Item
Criteria
Rotary-Wing
5.0% first 10 feet followed by 2.0%
minimum.
4.0% maximum.
Rotary-Wing Aircraft:
Clear taxi lane
2.5 X Rotor diameter
Use rotor
(interior)
for a diameter less
diameter of
than 50 feet.
largest
helicopter
normally using
2.0 X Rotor diameter
the apron.  When
for all others.
a taxi lane on
an apron has a
dual use with
fixed-wing
aircraft,
adjust the
width
appropriately.
Clear taxi lane
75 foot width for a Rotor diameter
(perimeter)
less than 50 feet.
1.5 X Rotor diameter plus an
additional 20 feet from centerline of
taxiway to apron edge for Rotor
diameter greater than 50 feet.
Hoverlane
2.5 X Rotor diameter.
Diameter of
largest
helicopter
usually using
the apron.
Clearance to fixed or mobile
Class A Runway
75 feet.
Measured from rear and side
Class B Runway
100 feet.
of apron.  Distance to other
Rotary-Wing
75 feet.
aircraft operational
pavements may require a
greater clearance.
100 feet.
For aprons regularly
servicing H-53 helicopters.
65





 


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