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sign, is located on the airport apron or taxiway at a
point selected for easy access by aircraft but where
other airport traffic is not to be unduly obstructed.
(See FIG AD 1.1−29.)
NOTE−
The associated sign contains the VOR station identification
letter and course selected (published) for the check, the
words VOR check course," and DME data (when
applicable). The color of the letters and numerals are black
on a yellow background.
EXAMPLE− VOR SIGN
DCA 176−356
VOR check course
DME XXX
20.3Nonmovement Area Boundary Markings.
These markings delineate the movement area;
i.e.,area under air traffic control. These markings are
yellow and located on the boundary between the
movement and nonmovement area. The nonmovement
area boundary markings consist of two yellow
lines (one solid and one dashed) 6 inches (15cm) in
width. The solid line is located on the nonmovement
AIP
United States of America
AD 1.1−16
15 MAR 07
Nineteenth Edition Federal Aviation Administration
area side while the dashed yellow line is located on
the movement area side. The nonmovement boundary
marking area is shown in FIG AD 1.1−30.
20.4Marking and Lighting of Permanently
Closed Runways and Taxiways.For runways and
taxiways which are permanently closed, the lighting
circuits will be disconnected. The runway threshold,
runway designation, and touchdown markings are
obliterated and yellow crosses are placed at each end
of the runway and at 1,000 foot intervals. (See
FIG AD 1.1−31.)
20.5Temporarily Closed Runways and Taxiways.
To provide a visual indication to pilots that a runway
is temporarily closed, crosses are placed on the
runway only at each end of the runway. The crosses
are yellow in color. (See FIG AD 1.1−31.)
20.5.1A raised lighted yellow cross may be placed
on each runway end in lieu of the markings described
in paragraph 20.4 to indicate the runway is closed.
20.5.2A visual indication may not be present
depending on the reason for the closure, duration of
the closure, airfield configuration, and the existence
and the hours of operation of an airport traffic control
tower. Pilots should check NOTAMs and the
Automated Terminal Information System (ATIS) for
local runway and taxiway closure information.
20.5.3Temporarily closed taxiways are usually
treated as hazardous areas, in which no part of an
aircraft may enter, and are blocked with barricades.
However, as an alternative, a yellow cross may be
installed at each entrance to the taxiway.
20.6Helicopter Landing Areas.The markings
illustrated in FIG AD 1.1−32 are used to identify the
landing and takeoff area at a public use heliport and
hospital heliport. The letter H" in the markings is
oriented to align with the intended direction of
approach. FIG AD 1.1−32 also depicts the markings
for a closed airport.
20.7Airport Signs.There are six types of signs
installed on airfields: mandatory instruction signs,
location signs, direction signs, destination signs,
information signs, and runway distance remaining
signs. The characteristics and use of these signs are
discussed below.
REFERENCE−
Advisory Circular−150/5340−18, Standards for Airport Sign Systems.
21. Mandatory Instruction Signs
21.1These signs have a red background with a
white inscription and are used to denote:
21.1.1An entrance to a runway or critical area.
21.1.2Land and Hold Short Operations (LAHSO)
holding position signs on runways:
21.1.2.1Hold short of Intersecting Runway.
21.1.2.2Hold short of Intersecting Taxiway.
21.1.2.3Hold short of a Point.
21.1.3Areas where an aircraft is prohibited from
entering.
21.2Typical mandatory signs and applications
are:
21.2.1Runway Holding Position Sign.This sign
is located at the holding position on taxiways that
intersect a runway or on runways that intersect other
runways. The inscription on the sign contains the
designation of the intersecting runway as shown in
FIG AD 1.1−33. The runway numbers on the sign are
arranged to correspond to the respective runway
threshold. For example, 15−33" indicates that the
threshold for Runway 15 is to the left and the
threshold for Runway 33 is to the right.
21.2.1.1On taxiways that intersect the beginning of
the takeoff runway, only the designation of the
takeoff runway may appear on the sign as shown in
FIG AD 1.1−34, while all other signs will have the
　
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