ILS Procedures
T-45C IUT BIFP-06
C.
Marker beacons
Sg 1, fr 6, pg 1
OM
1.
Outer
MM
IM
a.
Provides range/distance reference
point (beacon signal indicates aircraft
2.5
passage over beacon)
2.5
4TO7MILES (DME)
MARKER BEACONS
b.
Often marks FAF
NOTE: Not all ILS approaches have
an outer marker at the FAF. On some
ILS approaches, DME, radar, or
crossing radial is used to mark the
FAF.
2.
Middle
a.
Provides range/distance reference
point for all ILS runway categories
b.
Indicates decision height point for
Category I approach (200 ft RVR
2,400)
NOTE: With TDZ and centerline
lighting, RVR is 1,800 for A, B and C
A/C categories.
NOTE: T-45C is only equipped for
Category I ILS approach.
3.
Inner
a.
Indicates decision height point for
Category II approach (100 ft RVR
1,200)
b.
Provides progress reference point for
Category III approach (RVR 700).
Special authorization and equipment
are required for Category II and IIIA
ILS approaches
(4-01) Original
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