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Flashing characters indicate that the
the selecteddecision height.
Duringgo-
around,
alert is disabledat
DH+100feet.
Alerts inhibited
below5feet.
Radio Altitude Readout
Indicates radio altitude from 0to 2,500feet.
50-
foot increments from 2,500to 1,000feet;
10-
foot increments from 1,000to 50feet;
5-
foot increments from 50to10feet;
1-
foot increments from 10to 0feet;
Negative radio altitude is displayed as 0feet.
as set at
DH 100 32 000
RA
RA Failure Flag
Below2,500feetAGL, aradio altimeter failure is indicatedby theabove failure flagandthe radio altitude readout is removed. Acomparison between the two radio altitude sources is only performedbelow1,000feetAGL.Amiscompare is indicatedby the same failure flagbut the radio altitude readout is retained.The flagflashes for 5seconds when the miscompare is first detectedandthereafter remains displayeduntilthe condition is corrected.
Primary Mode ---Radio Altitude Indications
Figure 12---70---8
Flight Crew Operating Manual MASTER
CSP A-
013
FLIGHT INSTRUMENTS Head-
Up Guidance System Vol. 1 12-
70-
22
REV 56, Jan 31/03
HGS /AFCS Modes
Figure 12---70---9 Sheet 1
Flight Crew Operating Manual MASTER
CSP A-
013
FLIGHT INSTRUMENTS Vol. 1 12-
70-
23
Head-
Up Guidance System REV 56, Jan 31/03
Selectable Approach ModeActive Mode
HGS Mode Annunciator
(HGS)
(HGS) Armed Lateral Mode (AFCS)
Captured Lateral Mode
(AFCS)
Armed Vertical Mode (AFCS)Captured Vertical Mode
(AFCS)
PRI
HDG
10
10
ALT
AP 2 000
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