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and is given as a flight level above the transition altitude.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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The generic flight plan page displays the FROM waypoint (last waypoint to be overflown) on the
first line and the TO waypoint in white on the second line. The FROM/TO flight plan leg is called
the active leg.
The flight crew can use the scrolling keys to review all flight plan legs down to the last point of the
alternate flight plan. The AIRPORT key serves as a fast slew key ; the pilot can press it to call up
the next airport (DEST, ALTN, ORIGIN) to be displayed on the flight plan page.
In order to return to the beginning of the flight plan page, the pilot presses the F-PLN key on the
MCDU console.
The display shows the name of the leg between two waypoints and the distance between them on
a line between the lines that identify them. During an approach, this in-between line also defines
the angle of the final descent path. For example, “2-3 °” indicates that the leg is two nautical miles
long, and the flight path angle is – 3 °.
The display shows the bearing between FROM and TO waypoints as the bearing from the aircraft
position to the TO waypoint. It shows track (TRK) between the waypoints shown in lines 2 and 3.
This is the outbound track of the next leg.
When TRUE is selected or when entering the polar area, the degree symbol is replaced by “T”.
If the data base contains a published missed-approach procedure, or if someone has inserted
one manually, the display shows it in blue after the destination runway identification. It turns green
when the go-around phase becomes active.
After the last waypoint of the missed approach, the display shows the alternate flight plan in NAV
mode.
When airborne, the flight crew can clear or modify the TO waypoint only by using the DIR key on
the MCDU console.
PREDICTIONS
The system calculates and displays predictions for all waypoints.
CONSTRAINTS
The database may define an altitude constraint and speed constraint for each waypoint of the
climb, descent, and approach phases, or the pilot may insert such constraints manually. (Except
at origin, destination, FROM and pseudo waypoints).
The constraints are displayed in magenta as long as predictions are not completed.
Once predictions are available, constraints are replaced by speed and altitude predictions
preceded by stars. If the star is magenta the system is predicting that the aircraft will match the
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 20/124
FCOM 19 AUG 10
constraint (altitude within 250 ft, speed not more than 10 kt above the constraints). If the star is
amber, the system is predicting that the aircraft will miss the constraint and the MCDU displays
“SPD ERROR AT WPT” message.
PSEUDO WAYPOINTS
Pseudo waypoints are computed geographical positions corresponding to an event in the
vertical flight plan ; T/C (top of climb), T/D (top of descent), SPD/LIM (speed limit), DECEL
(deceleration for approach) etc. The display shows them as waypoints in parentheses.
APPROACH DISPLAY
The flight crew cannot enter an altitude constraint at the destination or MAP (Missed Appraoch
Point).
FLIGHT PLAN B PAGE
This page displays fuel predictions and forecast winds at each waypoint.
The pilot calls it up by pressing the next page key when the display is showing the A 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
TITLE FLIGHT NUMBER (blank if no flight number has been entered)
Line 1
WPT-EFOB-WIND to
Line 5
These lines display consecutive waypoints and associated fuel predictions,
and the forecast wind profile.
The direction of forecast winds is relative to true north. Forecast winds
include winds entered by the pilot (large font) and the propagated winds at
intermediate waypoints (small font).
If the flight crew uses a trip wind, it will be displayed for each waypoint. If
no other wind entry is made after takeoff, the FROM waypoint will display
the wind actually recorded, and the waypoints downpath will still display
the trip wind.
Line 6
DEST-UTC/DIST-EFOB
Identical to F-PLN A page.
A330/A340 FLIGHT CREW
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 1(138)
