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alignment, the arrow indicates the direction to the
threshold of the runway whose designation is
immediately next to the arrow.
(c) A runway holding position sign on a
taxiway will be installed adjacent to holding position
markings on the taxiway pavement. On runways,
holding position markings will be located only on the
runway pavement adjacent to the sign, if the runway
is normally used by air traffic control for “Land, Hold
Short” operations or as a taxiway. The holding
position markings are described in paragraph 2-3-5,
Holding Position Markings.
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 2-3-5, Holding Position Markings,
will be located on the taxiway pavement. An example
of this sign is shown in FIG 2-3-27. In this example,
the sign may protect the approach to Runway 15
and/or the departure for Runway 33.
AIM 2/14/08
2-3-22 Airport Marking Aids and Signs
FIG 2-3-28
Holding Position Sign for ILS Critical Area
FIG 2-3-29
Sign Prohibiting Aircraft Entry into an Area
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 2-3-5, 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 2-3-5. An example of this sign is shown
in FIG 2-3-28.
4. No Entry Sign. This sign, shown in
FIG 2-3-29, 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.
NOTEThe
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 the notes for paragraph 2-3-5, Holding
Position Markings.
2/14/08 AIM
Airport Marking Aids and Signs 2-3-23
FIG 2-3-30
Taxiway Location Sign
FIG 2-3-31
Taxiway Location Sign Collocated with Runway Holding Position Sign
2-3-9. Location Signs
a. 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.
1. Taxiway Location Sign. This sign has a
black background with a yellow inscription and
yellow border as shown in FIG 2-3-30. 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 2-3-35 and FIG 2-3-31.)
AIM 2/14/08
2-3-24 Airport Marking Aids and Signs
FIG 2-3-32
Runway Location Sign
FIG 2-3-33
Runway Boundary Sign
2. Runway Location Sign. This sign has a
black background with a yellow inscription and
yellow border as shown in FIG 2-3-32. 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.
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 2-3-33. This sign, which
faces the runway and is visible to the pilot exiting the
runway, is located adjacent to the holding position
marking on the pavement. The sign is intended to
provide pilots with another visual cue which they can
use as a guide in deciding when they are “clear of the
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