Chapter 4
Table 4.3. Rotary-Wing Landing Lanes.
Item
No.
Item Description
Requirement
Remarks
11
See Table 4.1,
Distance Between
Item 9
Centerlines of a Fixed-
Wing Runway and
Landing Lane
213.36 m min
[700 ft min]
* The clear zone area for Landing Lanes corresponds to the clear zone land use criteria for fixed-wing airfields as
defined in DoD AICUZ standards. The remainder of the approach-departure zone corresponds to APZ I land use
criteria similarly defined. APZ II criteria are not applicable for rotary-wing aircraft.
NOTES:
1. Metric units apply to new airfield construction and where practical modification to existing airfields and heliports,
as discussed in paragraph 1.4.4.
2. The criteria in this manual are based on aircraft specific requirements and are not direct conversions from inch-
pound (English) dimensions. Inch-pound units are included only as a reference to the previous standard.
3. Airfield and heliport imaginary surfaces and safe wingtip clearance dimensions are shown as a direct conversion
from inch-pound to SI units.
Table 4.4. Shoulders for Rotary-Wing Facilities.
No.
Item Description
Requirement
Remarks
May be increased when necessary to
1
7.5 m [25 ft]
Total Width of
accommodate dual operations with fixed-wing
Shoulders
aircraft.
(Paved and
Unpaved)
Adjacent to All
Operational
Pavements
Paved Shoulder
For Army and Air Force.
2
7.5 m [25 ft]
Width Next to All
Operational
Pavements
For Navy and Marine Corps, except as noted.
0 m [0 ft]
3
Variable
Conform to the longitudinal grade of the
Longitudinal Grade
abutting primary pavement.
4
2.0% min
Slope downward from edge of pavement.
Transverse Grade
4.0% max
(a) 40 mm [1 inch]
5
Grade
Slope downward from edge of shoulder.
drop off at edge of
(adjacent to paved
paved shoulder
shoulder)
4-20
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