Instrument Failures and GPS/INS Failures
T-45C TS & ADV BIFP-09; IUT BIFP-05
3.
Point to begin missed approach timing
D. Procedures for dealing with a marker beacon
failure
1.
Continue approach
2.
Ensure marker beacon switch up on COMM
panel
3.
Select master test switch to LAMP to see if
marker beacon light works
NOTE: According to the FAA, middle
marker (MM) beacons are no longer
required for ILS or localizer-only
approaches. Nonetheless, many MM
beacons are still indicated on ILS plates.
The FAA says that they should be
considered information-only assets. The
MM may—or may not—be positioned
coincidental with the published missed
approach point: ILS or localizer-only.
The missed approach point on a localizer-
only may be identified with a DME mileage
in addition to stop watch timing from the
FAF. According to the FAA, ILS localizer-
only missed approach points should not be
identified only by means of a MM beacon.
(4-01) Original
Page 9-27
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