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Page Title:
The glideslope transmitter operates on one of 40 dedicated ILS channels |
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|  T-45C TS INav-02
Introduction to INav and Voice Procedures
approach at the Middle Marker (MM) or 200
ft AGL whichever occurs first.
NOTE: ILS installations that share the
same frequency can exist at each end of a
given runway or at other runways on an
airport but cannot be in operation at the
same time. However, fields can have ILS
approaches to different runways that do not
share the same frequency and can operate
simultaneously.
e.
The glideslope transmitter operates on one of
40 dedicated ILS channels
(1) Transmits within the UHF frequency range
of 329.15 and 335.00 MHz
(2) Dedicated glideslope UHF frequencies are
paired with dedicated localizer VHF
frequencies (108.10 to 111.95) and are
automatically tuned upon selection of a
localizer frequency
NOTE: A complete frequency list is
contained in the Aeronautical Information
Manual (AIM).
CAUTION: Pilots should be aware that a
Sg 20, fr 22
loss of glideslope signal may occur. This
ILS Frequencies
will generate a flashing CAUTION advisory
to appear on the HUD and a flashing
GLIDESLOPE advisory window to appear
on all MFD displays. In addition, the
glideslope needle will disappear on the
HUD and ADI. Always disregard any
glideslope indication when the aircraft is not
on a published portion of an ILS approach
at a published approach altitude where the
glideslope interception is indicated and
anticipated. These false signals are most
prevalent in the area of back course
localizer approaches.
Page 2-32
(2-02) Original
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