Instrument Landing System (ILS) function and equipment

T-45C ADV INav-03

INav Review

E. Instrument Landing System (ILS) function and equipment

Sg 5, fr 8: Introduction to INav

Organization

NOTE: The ILS approach system is made up of three

INTRODUCTION to INAV

functional components: guidance systems, range

Responsibilities of ATC

systems, and the visual systems. This lesson discusses

facilities

each of the systems in detail.

Clearances

TACAN/VOR characteristics

ILS characteristics 2.9.4.6.5

GPS/INS characteristics

ILS characteristics

ILS provides cockpit indications for final

approach course and glidepath

Fig 2: FAA Instrument

Landing System (ILS)

ILS (with glideslope) is categorized as a

precision approach system

Sg 5, fr 9: Basic ILS Layout

Guidance Systems--the guidance system of the ILS

is made up of two parts, the localizer transmitter

(azimuth information) and the glideslope transmitter

(glidepath information)

Localizer: azimuth beacon transmitter

2.9.4.6.5.1

(1) Provides precise horizontal (course)

guidance information to the runway

centerline by way of a navigational beacon

to localizer-equipped aircraft within the

sensing area of the localizer beacon signal

(2) Beam is produced by two overlapping

modulated frequencies

(3) Signal acquisition and off-course

indications are 10 degrees either side of the

course along a radius of 18 nm from the

antenna and 35 degrees either side of the

course along a radius of 10 nm from the

(2-02) Original

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