T-45C TS INav-04; ADV INav-02
Components and Characteristics of the Instrument Landing System (ILS)
NOTE: Glidepaths with no published DH are usable to runway
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threshold. Pilots of T-45C aircraft will execute a missed
approach at the 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
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(1) Generates within the UHF frequency range of 329.15 and
(2) Dedicated glideslope UHF frequencies are paired with
dedicated localizer VHF frequencies and are automatically
tuned upon selection of a localizer frequency
CAUTION: Pilots should be aware that false glideslope
signals may exist. This can cause the glideslope advisory
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window to disappear and glideslope and localizer needles
False Glideslope Signals
to appear. 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.
CAUTION: Pilots should be aware that vehicular traffic not
subject to ATC may cause momentary deviation in ILS
course or glideslope signals. Also, critical areas around the
ILS equipment shielded antennas are not protected at
uncontrolled airports or at airports with an operating control
tower when weather or visibility conditions are above those
requiring protective measures.