TM 5-823-4
CHAPTER 5
MARKING AND LIGHTING OF CLOSED OR HAZARDOUS AREAS ON AIRFIELDS OR HELIPORTS
the segmented circle or at a central location if no
5-1.
Permanently closed runways and taxiways.
segmented circle exists.
For runways and taxiways which have been permanently
closed, the lighting circuits will be disconnected. For
5-4.
Hazardous areas. Hazardous areas, in which
runways, the threshold markings, runway designation
marking, and touchdown zone markings will be
no part of an aircraft may enter, are indicated by use of
obliterated, and crosses will be placed at each end and
barricades with alternate orange and white markings.
at 1,000-foot intervals. For taxiways, a cross will be
The barricades are supplemented with orange flags a
placed on the closed taxiway at each entrance. The
minimum of 20 by 20 inches square and made and
crosses shown in figures 5-1a and 5-1c are normally
installed so that they are always in the extended position
used, but the crosses shown in figures 5-1b and 5-1d are
and properly oriented. For nighttime use the barricades
are supplemented with flashing red lights. The intensity
more readily seen from aircraft on final approach and
of the lights and spacings for barricades, flags, and lights
may be used where desired.
must be such to adequately define and delineate the
hazardous area.
5-2.
Temporarily closed runways and taxiways.
Temporarily closed runways are treated in the same
5-5.
Stabilized areas. For marking requirements of
manner as in paragraph 5-1 except runway and taxiway
holding bays, aprons and taxiways of closed or
lights will be turned off and runway markings are not
hazardous areas at airfields and heliports, the criteria
obliterated, crosses are usually of the temporary type
stated in paragraph 2-7 will apply.
(constructed of material such as fabric or plywood), and
crosses are required only at runway ends. The crosses
are located on top of the runway numerals.
For
5-6.
Runway shoulder areas.
For marking
temporary marking, the dimensions of the crosses
requirements of runway shoulder areas of closed or
shown in figures 5-1a and 5-1cmay be reduced to permit
hazardous areas at airfields and heliports, the criteria
use of standard sheets of 4 by 8-foot plywood.
stated in paragraph 2-8 will apply.
Temporarily closed taxiways are usually treated as an
unusable area as explained in paragraph 5-4 below.
5-3.
Closed airfields and heliports.
When all
runways are closed temporarily, the runways are marked
as in paragraph 5-2 above and the airport beacon is
turned off. When all runways are closed permanently,
the runways are marked as in paragraph 5-1 above, the
airport beacon is disconnected, and a cross is placed in
5-1
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