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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.
If the database 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 NAV mode is engaged, the flight crew can only clear or modify the TO waypoint by using
the DIR key on the MCDU console.
PREDICTIONS
The FMS calculates and displays predictions at all F-PLN waypoints.
It uses the current wind and the predicted winds to compute the predictions.
CONSTRAINTS
The database can define an altitude constraint and speed constraint for each waypoint of the
climb, descent, and approach phases, or the flight crew can manually insert such constraints
(except at origin, destination, FROM, and pseudo-waypoints).
The constraints are displayed in magenta, until the predictions are completed.
When the predictions are available, the constraints are replaced by speed and altitude
predictions preceded by stars. If the star is in magenta, the system predicts that the aircraft will
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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match the constraint (altitude within 250 ft, speed not more than 10 kt above the constraints). If
the star is in amber, the system predicts that the aircraft will miss the constraint, and the MCDU
displays “SPD ERROR AT WPT”.
Note: SPD and ALT CSTR can either be entered from the VERT REV page, or directly on
the F-PLN A page. Time constraints can only be entered on the RTA page.
PSEUDO-WAYPOINTS
Pseudo-waypoints are geographical positions corresponding to an event in the flight plan : T/C
(Top of Climb), T/D (Top of Descent), SPD/LIM (Speed Limit), S/C (Step Climb point ), S/D
(Step Descent point), DECEL (Deceleration for Approach), Time Markers etc.
Pseudo-waypoints are displayed as waypoints in parentheses.
FLIGHT PLAN B PAGE
This page displays fuel predictions and forecast winds at each waypoint.
The pilot calls it up by pressing the ″→” or “←” keys when the FLIGHT PLAN A page is displayed.
TITLE FLIGHT NUMBER (blank, if no flight number has been entered).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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Line 1 WPT-EFOB-WIND to
Line 5
These lines display consecutive waypoints and associated fuel
predictions, and the predicted 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).
EFOB and WIND at the FROM waypoint are displayed in large font.
At other waypoints, it is displayed in small font, and in the same color
as the associated waypoint. No wind entry is allowed on this page.
The pilot will use the CLIMB, CRUISE, or DESCENT WIND pages,
accessed from the INIT A page or the DATA INDEX B page.
Line 6
DEST-UTC/DIST-EFOB
Identical to the F-PLN A page.
LATERAL REVISION PAGES
Applicable to:
,
,
MSN,,
4538,,
GENERAL
These pages provide a list of the lateral flight plan revisions, that can be used to change the flight
plan beyond a selected waypoint.
The crew calls up these pages from the flight plan pages (A or B), by pressing the left key next to
the selected waypoint.
Different lateral flight plan revisions are available for different waypoints.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
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TITLE The ident of the waypoint or airport selected for revision, together with
its latitude and longitude.
If the selected waypoint is the FROM waypoint, the title omits
the aircraft latitude and longitude, and instead displays the
“PPOS” (present position).
[ 1L ] DEPARTURE This prompt gives access to the DEPARTURE pages, where the crew
can select and insert runways, SIDs, and TRANSs.
[ 2L ] OFFSET [ ] This prompt allows the crew to enter a left or right lateral offset in the
　
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