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does not affect the radar mode.
FLAGS AND MESSAGES DISPLAYED ON ND
Applicable to:
(1) HDG Flag (red)
If the heading data fails, the rose, arc and associated symbols disappear.
A HDG flag flashes for 9 s, then remains steady in the upper part of the ND.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
INDICATIONS ON ND
A318/A319/A320/A321 FLEET DSC-31-45 P 62/72
FCOM 19 AUG 10
(2) CHECK HDG Flag (amber)
When the flight warning computer detects a disagree (5 °) between sides 1 and 2, a CHECK
HDG flag appears on both NDs, and a caution appears on the ECAM.
(3) Center Part Messages
The screen displays a MODE CHANGE message in green ‐ if there is a discrepancy between
the selected mode on the EFIS control panel and the mode sent from the onside FMGC, or
while the DMC is preparing a new page for display.
‐ The screen displays a RANGE CHANGE message in green if there is a discrepancy
between the range selected on the EFIS control panel and the range sent from the onside
FMGC. A MODE CHANGE message has priority over a RANGE CHANGE message.
‐ The screen displays a MAP NOT AVAIL message in red for several reasons :
• The MODE CHANGE or RANGE CHANGE message has been displayed more than six
seconds or
• The FMGC has failed or
• The FMGC has delivered an invalid aircraft position.
‐ The screen displays a W/S SET RNG 10 NM message if a predictive windshear alert is
triggered and the range is above 10 nm.
The message is displayed in the color corresponding to the windshear alert : red for a
warning, amber for a caution.
‐ The screen displays a W/S CHANGE MODE message if a predictive windshear alert is
triggered and the ND is not in ARC or ROSE mode. The message appears in red for a
warning, or amber for a caution.
(4) LOC Flag (red)
If LOC data fails, this flag flashes for nine seconds, then remains steady.
(5) G/S Flag (red)
If G/S data fails, this flag flashes for nine seconds, then remains steady.
(6) VOR Flag (red)
In ROSE VOR mode, when the VOR bearing is not valid, this flag flashes for nine seconds,
then remains steady.
(7) VOR1(2) or ADF1(2) or DME1 Flag (red)
If a navigation receiver fails, the appropriate one of these flags flashes for nine seconds, then
remains steady.
(8) VOR Course Flag
If the VOR course fails, a red CRSXXX flag appears.
If there is non-computed data (NCD), a blue CRS - - - flag appears.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
INDICATIONS ON ND
A318/A319/A320/A321 FLEET DSC-31-45 P 63/72
FCOM 19 AUG 10
(9) Other messages
MAP PARTLY
DISPLAYED (amber)
: In case of incomplete data transmission between the FMGC
(priority criteria) and the DMC, or if the DMC cannot draw the
complete MAP.
This message is also displayed when a very long leg exists
in the flight plan. A leg is considered as “very long” when the
starting point (or endpoint) is located at more than 45 ° from the
aircraft location (45 ° of longitude or latitude).
This DMC limitation results from a compromise between
accurate drawing precision and maximum leg length that can be
displayed.
NAV ACCUR UPGRAD,
or (white) NAV ACCUR
DOWNGRAD (amber)
: Signals a change in navigation accuracy.
SPECIFIC VOR/D
UNAVAIL (amber)
: If the NAVAID, that is tuned for the selected approach or
departure, is not available.
SET OFFSIDE
RNG/MODE (amber)
: Displayed on ND1(2), in case of an FMGC1(2) failure when the
two ND ranges or modes selected on the EFIS control panels
are different.
GPS PRIMARY (white,
boxed white)
: This message appears when GPS PRIMARY mode is available,
or has been recovered. The pilot can clear this message by
pressing the CLR key on the MCDU.
GPS PRIMARY LOST
(amber, boxed white)
: This message appears when GPS PRIMARY is not available,
and not clearable by pilot action.
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messages are present at the same time :
‐ NAV ACCUR DOWNGRAD
‐ NAV ACCUR UPGRAD
‐ SPECIF VOR/D UNAVAIL
‐ MAP PARTLY DISPLAYED
‐ SET OFFSIDE RNG/MODE
‐ GPS PRIMARY
‐ GPS PRIMARY LOST
Note: For information about the TCAS messages , (Refer to DSC-34-80-20 TCAS
MESSAGES).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
　
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