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designation of both runway directions.
21.2.1.2If the sign is located on a taxiway that
intersects the intersection of two runways, the
designations for both runways will be shown on the
sign along with arrows showing the approximate
alignment of each runway as shown in
FIG AD 1.1−35. In addition to showing the approximate
runway alignment, the arrow indicates the
direction to the threshold of the runway whose
designation is immediately next to the arrow.
21.2.1.3Land and Hold Short Operations (LAHSO)
include landing and holding short of an intersecting
runway, taxiway, or a designated point on the runway.
LAHSO signs are mandatory signs when Air Traffic
Control is operating under LAHSO. The holding
position markings will be located on the runway
pavement adjacent to the signs. Holding position
markings are described in paragraph 19.
AIP
United States of America
AD 1.1−17
15 MAR 07
Federal Aviation Administration Nineteenth Edition
21.2.1.4 A runway holding position sign(s) will be
installed on a runway that is normally used as a
taxiway, adjacent to the holding position markings.
21.2.1.5 A runway holding position sign on a
taxiway will be installed adjacent to holding position
markings.
21.2.2 Runway Approach Area Holding Position
Sign. At some airports, it is necessary to hold an
aircraft on a taxiway located in the approach or
departure area for a runway so that the aircraft does
not interfere with operations on that runway. In these
situations a sign with the designation of the approach
end of the runway followed by a “dash” (−) and letters
“APCH” will be located at the holding position on the
taxiway. Holding position markings in accordance
with paragraph 20 will be located on the taxiway
pavement. An example of this sign is shown in
FIG AD 1.1−36. In this example, the sign may protect
the approach to Runway 15 and/or the departure for
Runway 33.
21.2.3 ILS Critical Area Holding Position Sign.
At some airports, when the instrument landing
system is being used, it is necessary to hold an aircraft
on a taxiway at a location other than the holding
position described in paragraph 19, Holding Position
Markings. In these situations the holding position
sign for these operations will have the inscription
“ILS” and be located adjacent to the holding position
marking on the taxiway described in paragraph 19.
An example of this sign is shown in FIG AD 1.1−37.
21.2.4 No Entry Sign. This sign, shown in
FIG AD 1.1−38, prohibits an aircraft from entering
an area. Typically, this sign would be located on a
taxiway intended to be used in only one direction or
at the intersection of vehicle roadways with runways,
taxiways or aprons where the roadway may be
mistaken as a taxiway or other aircraft movement
surface.
NOTE−
The holding position sign provides the pilot with a visual
cue as to the location of the holding position marking. The
operational significance of holding position markings are
described in paragraph 19.
22. Location Signs
Location signs are used to identify either a taxiway or
runway on which the aircraft is located. Other
location signs provide a visual cue to pilots to assist
them in determining when they have exited an area.
The various location signs are described below.
22.1 Taxiway Location Sign. This sign has a black
background with a yellow inscription and yellow
border as shown in FIG AD 1.1−39. The inscription
is the designation of the taxiway on which the aircraft
is located. These signs are installed along taxiways
either by themselves or in conjunction with direction
signs or runway holding position signs.
(See FIG AD 1.1−44 and FIG AD 1.1−40.)
22.2 Runway Location Sign. This sign has a black
background with a yellow inscription and yellow
border as shown in FIG AD 1.1−41. The inscription
is the designation of the runway on which the aircraft
is located. These signs are intended to complement
the information available to pilots through their
magnetic compass and typically are installed where
the proximity of two or more runways to one another
could cause pilots to be confused as to which runway
they are on.
22.3 Runway Boundary Sign. This sign has a
yellow background with a black inscription with a
graphic depicting the pavement holding position
marking as shown in FIG AD 1.1−42. This sign,
which faces the runway and is visible to the pilot
exiting the runway, is located adjacent to the holding
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