Chapter 5
Table 5.4. Towways.
Class A
Class B
Item
Item
Runway
Runway
No.
Description
Requirement
Remarks
centerline of towway.
8
Criteria presented here are for
Towway Turning Radius
46 m [150 ft] radius
straight sections of towway.
Pavement width and horizontal
clearance lines may need to be
increased at horizontal curve
locations, based on aircraft
alignment on the horizontal curve.
9
Fillet Radius at
30 m [100 ft] radius
Intersections
10
Transverse Grade of
(a) 40 mm [1"] drop off at
Unpaved Shoulder
edge of pavement.
(b) 5% slope first 3 m [10 ft]
from edge of pavement.
(c) Beyond 3 m [10 ft] from
edge of pavement, 2.0%
min, 4.0% max.
11
The greater of:
Horizontal Clearance From
Army and Air Force facilities.
( the wing span width of the
Towway Centerline to
Fixed or Mobile Obstacles towed mission aircraft + 7.6 m
[25 ft]); or the minimum of
18.25 m [60 ft]
Navy and Marine Corps facilities for
15 m [50 ft]
Carrier Aircraft.
Navy and Marine Corps facilities
23 m [75 ft]
for patrol and transport aircraft.
Navy and Marine Corps facilities
14 m [45 ft]
for rotary-wing aircraft.
12
Army and Air Force facilities.
Vertical Clearance From
(Height of towed mission
Towway Pavement Surface
aircraft)
to Fixed or Mobile
+ 3 m [10 ft]
Navy and Marine Corps facilities for
7.5 m [25 ft]
carrier aircraft.
Navy and Marine Corps facilities
14 m [45 ft]
for patrol and transport aircraft.
Navy and Marine Corps facilities
9 m [30 ft]
for rotary-wing aircraft
5-15
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