Components and Characteristics of the Instrument Landing System (ILS)
T-45A UJPT & E2-C2 INav-04
c.
Select VOR to the ON position on Communication Control
Panel for localizer audio identifier signal
NOTE: An ILS/LOC frequency will always have a four-letter
identifier beginning with the letter "l" ()
d.
Adjust volume by using the RCVR knob on the Communication
Control Panel
e.
Marker beacon aural tones may be monitored by switching the
MKR toggle switch to the ON position
NOTE: The RCVR knob will have no effect on the volume of
the marker beacon aural tones received through the pilot's
headset.
2.
Instruments
a.
ADI
(1) ADI provides ILS course and glideslope information when
the VOR is tuned to ILS frequency, within range of beacon,
and is in a position relative to the FAC to receive the signal
(2) Note that glideslope (GS) and localizer (LOC) flags are in
view indicating the aircraft is not within sensing range of
either of the shielded navigational signals
(3) When aircraft is within the sensing area, the ADI LOC flag
is no longer visible and the LOC deviation pointer comes
into view
(4) When the aircraft is below the sensing area for both LOC
and glideslope signals, the GS flag is out of view and the
glideslope deviation pointer is visible and functional
b.
HSI
(1) The HSI also provides the pilot with LOC and glideslope
information. NAV and GS flags are in view on the HSI
when the aircraft is outside the sensing range of the
shielded signals of the localizer and glideslope
NOTE: HSI also provides the pilot with continuous range
(DME) information throughout the approach. An
independent transmitter associated with the ILS equipment
may be providing DME. It also may be provided indirectly
by a stand-alone TACAN station in close proximity to the
field. Tune the TACAN to the appropriate TACAN station
to receive DME.
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