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OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A330/A340 FLEET DSC-22_20-50-10-25 P 5/124
FCOM 19 AUG 10
[ 2L ] ALTN/CO RTE
(blue)
This field is dashed until a primary destination is entered in the 1R field. If a
preferred alternate is associated with the primary destination, it is displayed
in this field with the company route identification. The pilot may enter an
alternate and a company route manually.
If preferred alternate is not associated with the primary destination, “NONE”
is displayed in this field.
When the alternate route and the primary destination do not match, the
MCDU scratchpad displays “DEST/ALTN MISMATCH”.
If the primary destination is changed, this field is modified accordingly. The
pilot may modify it during the flight.
[ 3L ] FLT NBR The flight number automatically appears in this field, if it is stored with the
company route. The pilot may modify it, or enter a new number here.
[ 5L ] COST INDEX This is usually stored in the database, along with the company route. The
pilot may modify it, or enter a new value here. The system defaults to the
last entered value, if a value is not stored in the database.
[ 6L ] CRZ FL/TEMP
(cruise flight level and
temperature)
The cruise flight level is usually stored in the database, along with the
company route. If not, it has to be entered manually. If no cruise flight level
is entered, the system will not provide predictions while the aircraft is on
ground.
The pilot has to enter the temperature at cruise flight level, in order to refine
the predictions. Otherwise, these are computed for ISA conditions. (If no
sign is entered, the system uses plus).
[ 1R ] FROM/TO This field allows the pilot to enter a city pair (ICAO codes for city of origin
and destination).
This entry automatically deletes any previously-entered company route,
and calls up the route selection page. If one airfield of the pair is not in the
database, the display changes to the NEW RWY page.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A330/A340 FLEET DSC-22_20-50-10-25 P 6/124
FCOM 19 AUG 10
[ 2R ] INIT REQUEST This prompt is displayed, if the pilot did not enter an active flight plan,
or entered a flight number or a company route that is not in the aircraft
database. Selecting this prompt sends the ground a request for active flight
plan initialization (downlink message).
When the asterisk is not displayed, a downlink message cannot be sent.
The uplink flight plan is automatically inserted in the active flight plan, prior to
engine start, provided an active flight plan does not exist.
After engine start, the uplink flight plan is sent to the secondary flight plan,
and manually inserted or rejected. (Refer to DSC-22_20-70 FLIGHT PLAN
INITIALIZATION THROUGH ACARS OR ATSU)
[ 3R ] IRS INIT The pilot presses this key to access the IRS INIT page.
[ 5R ] WIND The pilot presses this key to access the climb wind page, unless a temporary
flight plan exists. If this is case, the scratchpad displays “TEMPORARY
F-PLN EXISTS”.
[ 6R ] TROPO The default tropopause altitude is 36 090 ft. The pilot can use this field to
modify it (60 000 ft maximum).
ROUTE SELECTION PAGE
Applicable to: ,
This page displays all the company routes stored in the data base that are associated with the
inserted city pair. The pilot may call it up manually, or it may be displayed automatically.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A330/A340 FLEET DSC-22_20-50-10-25 P 7/124
FCOM 19 AUG 10
Manually : The pilot presses the FROM/TO or ALTN key on the INIT A page when a city pair is‐
displayed there.
Automatically : The system displays it when the pilot enters a city pair or defines an alternate on‐
the INIT A page of the active or secondary flight plan, or when the flight crew enters an OTHER
ALTN on the alternate page.
TITLE Idents for the city pair inserted on the INIT A page.
If the flight crew accesses this page from an OTHER ALTN, this field
displays the primary destination and the other alternate city pair.
(The numbers in the upper righthand corner are the total number of
company routes from this city pair stored in the data base).
[ 1L ] This field shows the name of the company route displayed on the page.
Line 2 to Line 5 These fields display the various elements of the company route (waypoints
　
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