Chapter 4
Table 4.8. Rotary-Wing Imaginary Surfaces for IFR Approaches.
Helicopter
Runway
and
Item
Item
Legend in
Landing
No. Description Figures
Lanes
Helipad
Remarks
Navy and Marine
Standard
Air Force and
Corps do not have
Army same
criteria for
direction
unidirectional
ingress/egress;
ingress/egress.
See Remarks.
8
C
228.60 m
228.60 m 228.60 m
Army and Air Force
Width of
[750 ft]
[750 ft]
facilities.
Approach-
[750 ft]
Departure
Surface at
Start of
Sloped
Portion
228.60 m
228.60 m
NA
Navy and Marine Corps
[750 ft]
[750 ft]
facilities.
See
See
See Remarks
Centered on the
Remarks
Remarks
extended centerline and
is the same width as the
primary surface.
2,438.60 m
Army and Air Force
C
2,438.60 m
2,438.60
9
Width of
[8,000 ft]
facilities.
[8,000 ft]
m
Approach-
[8,000 ft]
Departure
Surface at
End of
Sloped
Portion
2,438.60 m
2,438.60
NA
Navy and Marine Corps
m
facilities.
[8,000 ft]
[8,000 ft]
See
See
See Remarks
Centered on the
Remarks
Remarks
extended centerline.
10
Elevation of
C
0m
0m
0m
Army and Air Force
Approach-
[0 ft]
[0 ft]
[0 ft]
facilities.
Departure
Surface at
Start of
Sloped
Portion
0m
0m
NA
Navy and Marine Corps
4-32
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