Page 151 - Planning and Design of Airports
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120 Airp o r t Pl anning
FIGURE 3-15 VOR approach.
some ILS systems, an additional marker called the inner marker (IM)
is located 1000 ft from the end of the runway. When the plane passes
over a marker, a light goes on in the cockpit and a tone sounds. The
configuration of the ILS system is shown in Fig. 3-16.
