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CONTROLS AND INDICATORS - MCDU - DATA FORMAT LIST
A330/A340 FLEET DSC-22_20-50-30 P 10/10
FCOM 19 AUG 10
Continued from previous page
DATA NAME FORMAT RANGE
(X is input) UNITS DISPLAY PAGE
VAPP Same as SPD kt (CAS) APPROACH
WAYPOINT XXXXXXXX - may be
from 1-7 characters for
waypoint.
Acceptable as waypoint
Ident :
SEC
ARPT
NAVAID
WAYPOINT
LAT/LONG,
PLACE.BRG/
PLACE.BRG
PLACE.BRG/DIST
PLACE/DIST
may be entered to define
a waypoint
WAYPOINT
NEWWAYPOINT
F-PLN A and B
F-PLN A and B
LAT REV
PROG
DIR TO
FIX INFO 1 and 2
EQUI TIME PT
STEP ALTS
NNN/NNN
Both must be entered ;
leading zeros may be
omitted.
WIND DIR : 0-360 Degrees PERF APPR
CLIMB WIND
CRUISE WIND
DESCENT WIND
WIND DIR/
WIND MAG
An entry of WIND DIR =
360 is displayed as 0.
WIND MAG : 0-250 Kt
WIND DIR/
WIND MAG/ALT
NNN/NNN/FL NNN or
NNN/NNN/NN NNN
NNN-Leading zero not
necessary.
An entry of Wind DIR =
360 is displayed as O.
WIND DIR 0-360
WIND MAG 0-200
same as ALT
Degrees
/kt
/ft MSL
CIMB WIND
CRUISE WIND
DESCENT WIND
ZFWNNN.N
Leading and trailing
zeros may be omitted
35-350.0 Thousands
of kg or Lbs
INIT B
ZFWCG Same as CG Same as CG Same as CG INIT B
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
OTHER FUNCTIONS - EFFECT OF BARO REFERENCE SETTING
A330/A340 FLEET DSC-22_20-60-10 P 1/4
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
The baro reference selector of the EIS (Electronic Instrument System) allows the pilot to use the
standard barometric reference (STD), sea level atmospheric pressure (QNH), or atmospheric
pressure at airfield elevation (QFE option) for the barometer setting.
The selected value is displayed in the baro reference display window of the EFIS control panel and
on the Primary Flight Display (PFD) below the altitude scale.
The barometer setting is used as a reference for the altimeter of the PFD and for the PFD target
altitude. In flight, it affects the predicted altitudes on the MCDU and the descent path computation.
MCDU ALTITUDE PREDICTIONS
Applicable to: ALL
The FMGS predicts at each waypoint of the flight plan an altitude that is a function of all data in the
lateral and vertical flight plans.
ON THE GROUND
The altitude predicted at each waypoint is displayed as altitude in feet above mean sea level
(AMSL) when it is below the transition altitude and as flight level when it is above the transition
altitude. The altitude constraints are also displayed, and they follow the same rule (feet or flight
level).
The predicted altitude is equal to the airport elevation plus the height you must attain in order to
reach the waypoint in the applicable mode (climb or descent)
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
OTHER FUNCTIONS - EFFECT OF BARO REFERENCE SETTING
A330/A340 FLEET DSC-22_20-60-10 P 2/4
FCOM 19 AUG 10
IN FLIGHT
The predicted altitude is equal to the aircraft altitude (depending on the barometer setting), plus
(or minus) the height you must attain to reach the waypoint in the applicable mode (climb or
descent).
‐ In climb :
Altitude predictions and constraints are displayed as altitude in feet above mean sea level
(AMSL) at, or below, the transition altitude, and as flight level above it.
For example : If the transition altitude is 5 000 ft, and you insert an altitude constraint as
8 000 ft, the MCDU F-PLN A page shows it as FL 80.
‐ In descent :
If “STD” is selected on the control panel of the EIS altitude predictions, and constraints above
the transition level are displayed as flight levels, and those below the transition level are
displayed as altitude AMSL.
If sea level pressure (QNH), or field elevation pressure (QFE option), is selected on the EIS
control panel, altitude predictions and constraints are displayed as altitudes AMSL, regardless
of the transition altitude.
For example : If the transition level is FL 50 and you insert an altitude constraint of 8 000 ft in
the descent profile, the MCDU F-PLN A page will display it as FL 80 if “STD” is selected, and
as 8 000 ft if the “QNH” or “QFE” option is selected.
TARGET ALTITUDE ON PFD
Applicable to: ALL
The PFD target altitude may either be :
‐ The FCU-selected altitude, or
‐ A flight management altitude constraint, if the climb mode or descent mode is engaged, and the
　
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