(3)
taxiway, as shown in Figure 5c.
AC 150/5340-18F 08/16/2010
4
Taxiways where the painted holding position markings do not extend straight across the
(4)
intersection with another taxiway. In this situation, the pilot turning onto the taxiway would have
Taxiways where the painted holding position markings are located a short distance from an
difficulty seeing the holding position sign on the left. This commonly occurs when the separation
distance between the runway and the parallel taxiway is less than standard and the holding position
markings are located near the edge of the parallel taxiway (see Figure 5b). Because of cockpit visibility
limitations, pilots of some aircraft making a left turn from the parallel taxiway onto the connecting
taxiway would have difficulty seeing a sign on the left. In this situation, it may be necessary to install the
sign on an angle (canted) in accordance with paragraph 13p.
b.
identify runway/runway intersections and are identical to the signs used for taxiway/runway intersections.
Holding Position Sign for Runway/Runway Intersections. Holding position signs are used to
(1) For runways that are 150 feet (45 meters) or less in width, only one sign is required on the left
side of the runway to identify a runway/runway intersection. The sign must be installed per the locations
in AC 150/5300-13, Airport Design, Tables 2-1 and 2-2. (Use the “Runway Centerline to Holdline” Item
in the table to determine the holding position sign location.)
(2) For runways that are more than 150 feet (45 meters) in width, the holding position signs must
be used on both sides of the runway to identify an intersecting runway. The sign location is the same as
that required in paragraph 5b(1).
(3) For runways of any width that are used for land and hold short operations (LAHSO), signs on
both sides of the runway and associated painted marking are required (see Figure 6). The sign location is
the same as that required in paragraph 5b(1).
(4) If a runway is normally used as taxiway, whether or not aircraft go through a runway/runway
intersection, then both holding position signs and associated painted marking are required (see Figure 6).
c.
indicate either the holding position for the ILS Critical Area or the POFZ boundary is the same ― the
Holding Position Sign for ILS Critical Areas/POFZ Boundary. The inscription on a sign to
abbreviation “ILS” (see Figure 2b). If a microwave landing system (MLS) is available and has a more
demanding critical area boundary than the ILS or POFZ, the inscription on the sign is MLS. Holding
position signs are installed in-line with the associated painted marking.
(1)
marking for an ILS critical area is 50 feet or
Where the distance between the runway holding position marking and the holding position
less, one holding position sign and marking may be installed,
provided it will not affect capacity. In such cases, the airport operator may use the runway holding
position sign and marking to delineate both the boundary of the RSA and the ILS critical area. In this
instance, the runway holding position sign and marking is located at the boundary that is the farthest from
the runway edge (see Figure 7).
(2)
fuselage or tail p
If a runway, taxiway, holding apron, or any movement area would result in an aircraft
enetrating the POFZ, install one holding position sign and marking to delineate the ILS
critical area and the POFZ. This holding position sign and marking is located at the more conservative
boundary of these two areas (see Figure 3). In this instance, the ILS critical area/POFZ boundary holding
position sign and marking cannot be replaced with, or used in lieu of, a runway holding position sign or
marking.