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Applicable to:
,
,
MSN,,,,
The ADIRS CDU on the overhead panel provides the controls and indicators to permit :
selection of power ‐ supplies to the ADR and IR systems
‐ selection and display of navigation data
‐ manual initialization (normally performed through the FMGC)
‐ status and fault indication of IRs or ADRs.
(1) IR 1(2)(3) Mode rotary sel :
OFF : The ADIRU is not energized. ADR and IR data are not available.
NAV : Normal mode of operation. Supplies full inertial data to aircraft systems.
ATT : IR mode supplying only attitude and heading information if the system loses its
ability to navigate.
The heading must be entered through the CDU keyboard and has to be reset
frequently (about every 10 min)
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
ADIRS - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-34-10-20 P 2/6
FCOM 19 AUG 10
(2) IR 1 (2) (3) lt
FAULT: Comes on amber associated with an ECAM caution when a fault affects the
respective IR.
Steady : the respective IR is lost.
Flashing : the attitude and heading information may be recovered in ATT
mode.
ALIGN: Steady : the respective IR is operating normally in align mode.
Flashing if : IR alignment fault, or no present position entry after 10 min, or
difference between position at shutdown and entered position
exceeds 1 ° of latitude or longitude.
Extinguished : Alignment has been completed.
(3) ON BAT lt
Comes on amber when one or more IRs is supplied only by the a/c battery. It also comes on for
a few sec at the beginning of the alignment, but not for a fast realignment.
Note: If, when the aircraft is on the ground, at least one ADIRU is supplied by aircraft
batteries :
‐ an external horn sounds
‐ the ADIRU and AVNCS light comes on blue on the EXTERNAL POWER panel.
(4) DATA selector knob
This knob selects the information to be displayed in the ADIRS display window.
TEST The ENT and CLR buttons on the keyboard come on, and the display shows all 8's.
TK/GS The display shows true track and ground speed.
PPOS The display shows present latitude and longitude
WIND The display shows true wind direction and speed.
HDG The display shows true heading and the minutes remaining until alignment is
completed.
STS The display shows an action code.
(5) SYS selector knob
OFF : The CDU display is not energized. ADIRS are still energized if the associated IR
mode rotary selectors are not at OFF.
1.2.3 : System selected for data display.
(6) Display
The display presents the data selected by the DATA selector.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
ADIRS - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-34-10-20 P 3/6
FCOM 19 AUG 10
A keyboard entry overrides the selected display.
(7) Keyboard
The flight crew can use the keyboard to enter the present position, or the heading in ATT
mode, into the selected system.
Letter keys : Used to enter N, S, E, or W for position, or entering H �� for heading (ATT
mode).
Number keys : Used to enter the present position (or the present magnetic heading in ATT
mode).
CLR key : The integral cue light comes on after an entry operation, if the data has an
unreasonable value.
Pressing this key clears the data display, that has been keyed in but not yet
entered.
ENT Key : The integral cue light comes on when a crewmember has keyed in a number
for N, S, W, E or H �� .
Pressing the key enters data into the ADIRS.
(8) ADR 1 (2) (3) pb (momentary action)
OFF Air data output disconnected.
FAULT This amber light comes on with an ECAM caution, if a fault is detected in the air data
reference part.
OVERHEAD PANEL
Applicable to: MSN,
The ADIRS CDU on the overhead panel provides the controls and indicators to permit :
selection of power ‐ supplies to the ADR and IR systems
‐ selection and display of navigation data
‐ manual initialization (normally performed through the FMGC)
‐ status and fault indication of IRs or ADRs.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
ADIRS - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-34-10-20 P 4/6
FCOM 19 AUG 10
(1) IR 1(2)(3) Mode rotary sel :
OFF : The ADIRU is not energized. ADR and IR data are not available.
NAV : Normal mode of operation. Supplies full inertial data to aircraft systems.
ATT : IR mode supplying only attitude and heading information if the system loses its
ability to navigate.
The heading must be entered through the CDU keyboard and has to be reset
　
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