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A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A330/A340 FLEET DSC-22_20-50-10-20 P 71/116
FCOM 19 AUG 10
[1L] - [1R] to [4L] - [4R] The five closest airports are extracted from the database, and ranked by
distance from the aircraft position.
RG : Bdisplays the current bearing from the aircraft position
to the airport. T is added if true reference is selected.
DIST : displays the current great circle distance from the
aircraft position to the airport.
TIME or UTC : displays the predicted time to the airport computed
using the current wind or a wind vector entered on the
page 2.
The time is only computed in cruise phase.
[5L] The crew may enter a fifth airport here using the 4 letter code. The entry
may be modified at any moment even when the “LIST FROZEN” is
displayed.
If the pilot enters an airport that is not in the database, then “NOT IN DATABASE” appears in the
scratchpad.
[1L] - [1R] EFOB to [5L]
- [5R] EFF WIND
Displays the EFOB at each airport. EFOB is only computed in cruise phase.
The pilot may enter here an anticipated headwind or tailwind along the
bearing to the airport. If the entry is preceded by +, T, TL a tail wind is
assumed.
If the entry is preceded by –, H, HD, a head wind is assumed.
Before the pilot entry, a default value may be displayed, based on the
current wind.
The effective wind is used to compute the EFOB and time to the airport.
[6L]
FREEZE/UNFREEZE
This prompt allows the pilot to freeze and unfreeze the list of five airports.
The list is automatically frozen upon accessing the page 2.
It will remain frozen upon returning to page 1, the UNFREEZE prompt is
displayed.
The “LIST FROZEN” message is always displayed on page 2.
RETURN Returns to the page 1.
[6R] EFOB/WIND Gives access to the page 2.
Pressing this prompt automatically freezes the list of five closest airports.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A330/A340 FLEET DSC-22_20-50-10-20 P 72/116
FCOM 19 AUG 10
Note: If the aircraft position becomes invalid, all fields are dashed, FREEZE/UNFREEZE and‐
EFOB/WIND prompts are removed, LIST FROZEN is displayed and the A/C POSITION
INVALID message is displayed in the scratchpad. The page 2 may not be accessed.
Predictions (EFOB, TIME) displayed on the page assume :‐
• ECON CRZ speed
• CI and CRZ FL from primary F-PLN are kept
• constant wind value
• in case of engine out, the aircraft altitude is the minimum of (CRZ FL, EO MAX ALT)
• downpath steps are not considered
• descent fuel burn is a constant value : 800 kg for A340, 500 kg for A330
EQUI-TIME POINT PAGE
Applicable to:
The pilot will use this page to require are equitime point computation between two different points
(airport, navaid runway or waypoint). This pseudo waypoint is displayed on the navigation display
along the F-PLN. The EQUI-TIME POINT page is accessed by pressing 6L key from the DATA
INDEX page :
[13L] A/C TO (blue) Displays the reference waypoint 1.
[3L] A/C TO (blue) Displays the reference waypoint 2.
Note: The origin and destination airports are used by default for respective reference points 1 and
2 until a pilot entry is made.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A330/A340 FLEET DSC-22_20-50-10-20 P 73/116
FCOM 19 AUG 10
[1R] BRG/DIST/UTC
and (TIME)
This field displays the bearing, distance, time from current aircraft position to
the reference waypoint 1.
Idem for the reference waypoint 2.
[3R] (green) BRG : displays the current great circle bearing from the aircraft
position to the reference waypoint. T is added if TRUE
reference is selected.
DIST : displays the current great circle distance from the aircraft
position to the reference waypoint.
TIME : displays the predicted time to the reference waypoint
(computed using the current wind or a wind vector entered by
the crew).
Time is only computed in cruise phase, otherwise it is dashed.
[2L] and [4L] TRU
WIND (blue)
The pilot may enter the wind (direction/velocity) at the reference waypoint
and cruise flight level :
This wind is used to compute the time from the aircraft position to the
reference waypoint and to locate the equitime point itself.
　
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