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approach in the flight plan is ILS.
The scratchpad displays “RWY/ILS MISMATCH” when the flight crew manually tunes the ILS and the
entered frequency does not agree with the ILS or the LOC IDENT/FREQ that the flight crew requests
for automatic tuning. The FMGS logic does not enable the flight crew to modify the course of an ILS
when its frequency is identical to the ILS selected in the F-PLN.
SELECTION OF NAVAIDS ON MCDU PAGES
Applicable to:
The MCDU displays the navaids tuned by the FMGC on two pages:
‐ RADIO NAV Page
‐ SELECTED NAVAIDS Page.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
NAVIGATION - RADIO NAVIGATION TUNING
A318/A319/A320/A321 FLEET DSC-22_20-20-30 P 4/8
FCOM 19 AUG 10
RADIO NAV PAGE
This page shows which navaids have been tuned automatically or manually for display purposes.
SELECTED NAVAIDS PAGE
This page lists the navaids tuned by the onside FMGC. No navaids can be modified on this page.
The flight crew may deselect as many as six unreliable navaids for the whole flight (using 1R key).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
NAVIGATION - RADIO NAVIGATION TUNING
A318/A319/A320/A321 FLEET DSC-22_20-20-30 P 5/8
FCOM 19 AUG 10
SELECTION OF NAVAIDS ON MCDU PAGES
Applicable to:
,
,
MSN,,,,
The MCDU displays the navaids tuned by the FMGC on two pages:
‐ RADIO NAV Page
‐ SELECTED NAVAIDS Page.
RADIO NAV PAGE
This page shows which navaids have been tuned automatically or manually for display purposes.
SELECTED NAVAIDS PAGE
This page lists the navaids tuned by the onside FMGC. No navaids can be modified on this page.
The flight crew may deselect as many as six unreliable navaids for the whole flight (using 1R key).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
NAVIGATION - RADIO NAVIGATION TUNING
A318/A319/A320/A321 FLEET DSC-22_20-20-30 P 6/8
FCOM 19 AUG 10
MANUAL TUNING
Applicable to:
,
,
MSN,,,
WRITE the identifier on the RADIO NAV page.
Preferably use the identifier.
�� If the MCDU displays “NOT IN DATA BASE”:
WRITE the frequency.
DISREGARD the ident that appears in small font on the MCDU.
When a frequency is entered in the VOR field, the FMGC automatically associates to the tuned
frequency the closest navaid identifier with the same frequency, and displays it on the RAD NAV
page. This identifier may not correspond to the tuned navaid.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
NAVIGATION - RADIO NAVIGATION TUNING
A318/A319/A320/A321 FLEET DSC-22_20-20-30 P 7/8
FCOM 19 AUG 10
If the closest navaid, found in the database, is of a different type (e.g. VOR instead of
VOR/DME), the flight crew will obtain a partial tuning (e.g. VOR indication instead of VOR/DME
indication).
NAVAID IDENTIFICATION
Applicable to: ALL
CHECK the ILS identifier decoding on the PFD, and the VOR or ADF identifier on the ND.
When the navaid identifier is decoded in agreement with that published, no audio check is necessary.
When the decoding is different from the published one, check the audio. Due to morse coding
inaccuracy, wrong decoding may sometimes occur.
Note: When a DME or a TACAN only is selected using either its identifier or its frequency, the
NDs do not display the decoded indication.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
NAVIGATION - RADIO NAVIGATION TUNING
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-22_20-20-30 P 8/8
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
NAVIGATION - ALIGNMENT OF INERTIAL REFERENCE SYSTEM
A318/A319/A320/A321 FLEET DSC-22_20-20-40 P 1/4
FCOM 19 AUG 10
ALIGNMENT OF INERTIAL REFERENCE SYSTEM
Applicable to:
The FMGS uses the reference point coordinates of the departure airport to align the IRS.
It calls these up from the database automatically after the flight crew has entered a company route
or an origin-destination city pair and pressed the ALIGN IRS key on the MCDU. The flight crew can
adjust these coordinates manually to the gate position. A normal alignment takes 10 min, a fast
alignment 30 s.
Fast alignment is used to refine a position when time is limited.
Note: If "ALIGN" flashes on the ADIRS overhead CDU during the alignment process, it indicates
　
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