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FCOM 19 AUG 10
[ 4L ] blank or [ 4L ]
MACH/SPD
If the descent phase is not active, this field is blank.
If the descent phase is active :
The field displays the speed or Mach target manually selected by the pilot.
“SELECTED” is displayed in the [ 1L ] field.
To modify the field value, the pilot will use the SPD/MACH selector knob of
the FCU. [ 4L ] field and FCU window will display the same value.
Pushing in the FCU speed selector knob activates the managed SPD/MACH
target displayed in the [ 3L ] field.
[ 5L ] Blank or [ 5L ]
EXPEDITE
If the descent phase is not active this field is blank.
Displays this legend if the descent phase is active.
It indicates the time and distance required to reach the altitude displayed in
the 2R field at MMO/VMO speed.
[ 6L ] PREV PHASE
or ACTIVATE APPR
PHASE
This key calls up the cruise phase page if the descent phase is not yet
active.
Displays if the descent phase is active. First press causes “CONFIRM APPR
PHASE” to be displayed. Second press activates the approach phase.
[ 1R ] TIME/UTC DEST
EFOB
Before takeoff, this field displays the flight time to destination and the
predicted remaining fuel on board. If the crew enters an estimated takeoff
time, the field displays automatically the predicted arrival time (UTC) at
destination.
After takeoff, it displays the predicted arrival time at destination (UTC) and
the remaining fuel on board.
[ 2R ] PRED TO This field displays the target altitude for the predictions in [ 3R ] [ 4R ], or
[ 5R ] .
The display defaults to the altitude selected on the FCU. The flight crew can
modify it to any altitude lower than present altitude.
[ 3R ] These fields display altitude predictions down to the target altitude selected
in [ 2R ], computed for the current vertical mode (DES or OP DES) and the
indicated target speed.
[ 3R ] field : shows predictions for the “MANAGED” SPD/MACH profile.
[ 4R ] [ 4R ] field : displays predictions for a SPD/MACH.
[ 5R ] [ 5R ] field : displays predictions for a descent at MMO/VMO (EXPEDITE).
Fields [ 3R ] [ 4R ] [ 5R ] are displayed only when DES phase is active.
[ 6R ] NEXT PHASE The pilot presses this key to call up the PERF APPR 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
PERF APPR PAGE
Applicable to:
TITLE APPR in a white large font if the approach phase is not active, in a green
large font if it is.
[ 1L ] QNH This field displays brackets when the aircraft is more than 180 nm from the
destination. Inside 180 nm, a mandatory amber box appears.
The pilot must enter the QRH, either in HPA (three or four digits) or in inches
of mercury (two digits, decimal point, and two more digits).
The system interprets :
0 as 1 003 hPa
0 as 29.92 in of mercury
The pilot can modify this entry at any time.
The system uses QNH to compute the cabin repressurization segment.
[ 2L ] TEMP This field displays the temperature at destination. Until the pilot enters the
temperature, the field displays brackets. The pilot can modify this figure.
The system uses this temperature to refine its computation of the descent
profile (ISA model).
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
[ 3L ] MAG WIND or
TRUE WIND
The pilot enters the wind speed in knots at the destination in this field. The
reference of the wind entry is magnetic or true, depending on the airport’s
reference.
The system transmits any entry made in this field to the descent wind page
(which displays wind direction as true, not magnetic, whatever the airport’s
reference is).
[ 4L ] TRANS ALT This field displays the transition altitude taken from the data base (small font)
or entered by the flight crew (large font).
The pilot can modify it at any time.
[ 5L ] VAPP The FMGC computes this approach speed, using the formula:
VAPP = VLS + 1/3 of the headwind component (1/3 of the headwind
component is limited to 5 kt as a minimum and 15 kt as a maximum).
The pilot can modify VAPP. A clear action reverts VAPP to the computed
value.
Note: VLS = 1.23 VS1G of the selected landing configuration (full or 3).
[ 6L ] PREV PAGE This field displays this legend if the approach phase is not active.
Pressing this key calls up the descent performance page.
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 1(125)
