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AIM

10/12/17

2

−3−30

Airport Marking Aids and Signs

2

−3−14. Aircraft Arresting Systems

a.

Certain airports are equipped with a means of

rapidly stopping military aircraft on a runway. This
equipment, normally referred to as EMERGENCY
ARRESTING GEAR, generally consists of pendant
cables supported over the runway surface by rubber
“donuts.” Although most devices are located in the
overrun areas, a few of these arresting systems have
cables stretched over the operational areas near the
ends of a runway.

b.

Arresting cables which cross over a runway

require special markings on the runway to identify
the cable location. These markings consist of 10 feet
diameter solid circles painted “identification yel-
low,” 30 feet on center, perpendicular to the runway
centerline across the entire runway width. Additional
details are contained in AC 150/5220

−9, Aircraft

Arresting Systems for Joint Civil/Military Airports.

NOTE

Aircraft operations on the runway are not restricted by the
installation of aircraft arresting devices.

c. Engineered Materials Arresting Systems

(EMAS)

. EMAS, which is constructed of high

energy

−absorbing materials of selected strength, is

located in the safety area beyond the end of the
runway. EMAS will be marked with yellow chevrons.
EMAS is designed to crush under the weight of
commercial aircraft and will exert deceleration forces
on the landing gear. These systems do not affect the
normal landing and takeoff of airplanes. More
information concerning EMAS is in AC
150/5220

−22, Engineered Materials Arresting Sys-

tems (EMAS) for Aircraft Overruns.

NOTE

EMAS may be located as close as 35 feet beyond the end of
the runway. Aircraft and ground vehicles should never taxi
or drive across the EMAS or beyond the end of the runway
if EMAS is present.

FIG 2

−3−42

Engineered Materials Arresting System (EMAS)