Attitude monitor, Cross comparator annunciators – BendixKing SG 465 System EFS 50 User Manual

Page 106

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EADI Displays

4.2.12

Issued 4/95

SW 06/07/08/11

Note: FAR localizer limits will

change on initial 300 feet
crossing and will remain at
new limits.

An additional configuration option
provided with 0702 and 08 soft-
ware allows CAT II operation
without any deviation monitoring.

When activated, Category II devi-
ation limit (>> <<) indicators are
displayed on the glideslope and
localizer scale, chevrons will also
be displayed on the rising runway
if it is configured for display.

ATTITUDE MONITOR

Dual channel processing of Atti-
tude inputs provides validation of
the processed displayed attitude
information within the symbol
generator. If a failure is detected
in the processed information,
“ATTITUDE FAIL” is annunciated
at the top center of the display
and blue sky and brown ground
information and associated atti-
tude scales are removed.
NOTE: There is no monitor func-
tion in any reversionary mode.

CROSS COMPARATOR
ANNUNCIATORS

Refer to Figure 4.2.5 while
reviewing this section.

Provides system comparison
between like on-side and off-side
sensors. The following list
describes the associated symbol-
ogy and sensors:

RA

Radio altitude miscompare, a yel-
low RA above a double-ended
arrow displayed just below the
radio altitude readout in the
upper right corner. This is dis-
played when SG 1 and SG 2
radio altitude differ by more than
8 feet at between 0 and 99 feet
AGL. The Allowable difference
increases by 8 ft per 100 ft of alti-
tude . If the off-side RA flag is dif-
ferent the miscompare will also
be displayed.

LOC

Localizer miscompare, a double-
ended arrow will be displayed
over the localizer deviation point-
er on the EADI and EHSI when
both SG 1 and SG 2 are tuned to
an ILS/MLS frequency and differ
by more than halfscale deviation.

GS

Glideslope miscompare, a dou-
ble-ended arrow will be displayed
above the glideslope deviation
pointer on the EADI and EHSI
when both SG 1 and SG 2 are
tuned to an ILS/MLS frequency
and differ by more than halfscale.

ATT

Attitude miscompare, a yellow
double-ended arrow over “ATT”
will be displayed in the top left
corner of the EADI if ADI pitch 1,
2, and cross-side (if available)
differ by more than 5 degrees or
roll 1, 2, and cross-side (if

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