12/13/2017 AC 150/5370-2G
2-23
2. Temporarily Closed Taxiways. Place barricades outside the safety
area of intersecting taxiways. For runway/taxiway intersections, place
an X at the entrance to the closed taxiway from the runway. If the
taxiway will be closed for an extended period, obliterate taxiway
centerline markings, including runway leadoff lines and taxiway to
taxiway turns, leading to the closed section. Always obliterate runway
lead-off lines for high speed exits, regardless of the duration of the
closure. If the centerline markings will be reused upon reopening the
taxiway, it is preferable to paint over the marking. This will result in
less damage to the pavement when the upper layer of paint is
ultimately removed. See Figure 2-4.
2.18.2.1.5 Temporarily Closed Airport.
When the airport is closed temporarily, mark all the runways as closed.
2.18.2.2 If unable to paint temporary markings on the pavement, construct them
from any of the following materials: fabric, colored plastic, painted sheets
of plywood, or similar materials. They must be properly configured and
appropriately secured to prevent movement by prop wash, jet blast, or
other wind currents. Items used to secure such markings must be of a color
similar to the marking.
2.18.2.3 It may be necessary to remove or cover runway markings, including but
not limited to, runway designation markings, threshold markings,
centerline markings, edge stripes, touchdown zone markings and aiming
point markings, depending on the length of construction and type of
activity at the airport. When removing runway markings, apply the same
treatment to areas between stripes or numbers, as the cleaned area will
appear to pilots as a marking in the shape of the treated area.
2.18.2.4 If it is not possible to install threshold bars, chevrons, and arrows on the
pavement, “temporary outboard white threshold bars and yellow
arrowheads”, see Figure 2-5, may be used. Locate them outside of the
runway pavement surface on both sides of the runway. The dimensions
must be as shown in Figure 2-5. If the markings are not discernible on
grass or snow, apply a black background with appropriate material over
the ground to ensure they are clearly visible.
2.18.2.5 The application rate of paint to mark a short-term temporary runway and
taxiway markings may deviate from the standard (see Item P-620,
“Runway and Taxiway Painting,” in AC 150/5370-10), but the dimensions
must meet the existing standards. When applying temporary markings at
night, it is recommended that the fast curing, Type II paint be used to help
offset the higher humidity and cooler temperatures often experienced at
night. Diluting the paint will substantially increase cure time and is not
recommended. Glass beads are not recommended for temporary markings.
Striated markings may also be used for certain temporary markings. AC