Astronautics RoadRunner AFI4700 - Heading Miscompare Annunciations; Table 3-14: Heading Miscompare Annunciations

PLG12863E AFI4700 Pilot’s Guide 77
3.5 Heading Miscompare Annunciations
When a heading, lateral deviation, vertical deviation, miscompare
between both left and right sources is detected, it is annunciated in
the top left corner of the HSI. For a complete listing of warnings and
cautions, see Section 4.1.
Table 3-15: Heading Miscompare Annunciations
Symbol
Description
<-> HDG
The heading difference between onside and
offside sources exceeds 6°.
<-> RA
The radar altitude reported between dual radar
altitude units differs by more than 25’.
<-> LOC
The localizer information between ILS1 and ILS2
differs by more than two-thirds of a dot.
<-> GS
The glideslope information between ILS1 and
ILS2 differs by more than two-thirds of a dot.
<-> ILS
The localizer and glideslope information between
ILS1 and ILS2 differs by more than two-thirds of
a dot.