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A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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ALTERNATE PAGE
Applicable to: ,
This page enables the pilot to review, in the NAV database, the alternate airports that are paired
with the destination, and define additional alternates, if needed. (Alternate airports are linked to the
destination). The pilot calls up this page with the ALTN prompt, from the lateral revision page for the
destination.
TITLE [ 1L ] ALTN The destination airport is displayed in large green font.
This field displays the selected alternate : In green, if it is active ; in yellow, if
it is temporary. “NONE” is displayed, if NO ALTN option is selected, or if the
destination has no alternate.
Line 2 to line 5 These lines display the identifications of alternates (up to 6), the extra fuel
weight remaining after landing at the alternates, and the great-circle track
and distances to them from the destination.
If the database contains a company route between the destination and
the alternate, the distance shown is an airway distance (not a great-circle
distance).
When the database defines a preferred alternate, it is displayed on Line 2 (if
no scrolling has been performed).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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FCOM 19 AUG 10
[ 4L ] OTHER ALTN The pilot can enter an airport identifier in the brackets (Line 3). If that airport
is not stored in the database, the NEW RUNWAY page appears for the pilot
to use in defining it.
If it is stored in the database, the ROUTE SELECTION page appears, and
the pilot can use it to select the best route. The pilot may enter a distance
in the DIST field of the OTHER ALTN prompt in order to get preliminary
fuel predictions. However, once he has selected the alternate airfield as a
temporary alternate and then inserted it, the ALTN distance reverts either to
the airway distance if he has selected a company route, or otherwise to the
direct distance to the alternate.
The pilot can use OTHER ALTN to overwrite and replace the previous
OTHER ALTN.
NO ALTN [ 6L ]
RETURN or ERASE
The pilot uses this key to select the NO ALTN option.
The pilot presses this key to make the display revert to the LAT REV page.
Pressing this key erases the temporary selection.
[ 1R ] CO RTE The pilot presses this key to display the active company route between the
destination and the selected alternate.
[ 6R ] INSERT Pressing this key activates the temporary selection.
ROUTE SELECTION PAGE FOR ALTERNATE
Applicable to: ,
This page allows the pilot to review the company route between the destination and the alternate,
and select a different route, if that seems appropriate.
This page comes up automatically when the flight crew enters an ident in the OTHER ALTN field.
See “Route Selection”, page for a description of this page.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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FCOM 19 AUG 10
[ 6R ] SELECT When the pilot presses this key the display reverts to the alternate page.
(The distance between the destination and the alternate is then the airway
distance).
VERTICAL REVISION PAGES
Applicable to: ,
These pages contain the menu of available vertical flight plan revisions that can be applied at a
selected waypoint.
The pilot calls up these pages from the flight plan A or B pages by pressing the right hand key next to
the selected revised waypoint.
The pilot may make several different vertical revisions (although some may not be available at all
waypoints) : speed limit, speed constraint, altitude constraint, time constraint, wind page and STEP
ALTS page.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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TITLE (white) “VERT REV AT [location]”
(Second line shows remaining fuel and extra fuel at the revise waypoint.
[ 1L ] “TOO
STEEP PATH
BEYOND” (amber)
This message is displayed if the waypoint is part of a leg with too steep a
descent path.
A330/A340 FLIGHT CREW
　
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