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the wind direction (in degrees), the wind
velocity (in knots) and the wind altitude (in feet
or in flight level). Don’t forget that if you enter
an altitude in flight level, it should begin with
‘FL’.
The wind information lines entered here are
automatically sorted by altitude.
FMGC
Airbus Series Vol.1
90 For Microsoft Flight Simulator use only. Not for use in real aviation.
CAB RATE (2R)
This field displays the default cabin rate used
for pressurization. It is modifiable by the crew.
Clearing this value reverts the default value of
-350 feet/minute.
PERF DES PAGE
This page can be accessed by pressing the
PERF key when the descent phase is active, or
by pressing the 6R key in the PERF CRZ page.
ACT MODE (1L)
The value in this field depends on the other
fields of the page.
This field displays the speed mode that is used
for the descent:
- ECON: the ECON speed/Mach combination
displayed in the ECON field (3L) will be used.
- AUTO SPEED xxx: the speed entered by the
crew in the speed field (3L) will be used.
- AUTO MACH xxx: the Mach entered by the
crew in the speed field (3L) will be used.
- SPEED xxx: if the descent phase is active and
the speed is selected on the FCU, the target
speed value is displayed here.
- MACH xxx: if the descent phase is active and
the Mach is selected on the FCU, the target
Mach value is displayed here.
- EXPEDITE: the expedite descent mode has
been selected on the FCU. In this case, the
aircraft descents as efficiently as possible,
using the green dot speed as the target speed.
CI (2L)
This is the Cost Index used for the descent
phase. It impacts the ECON speed/Mach
computed on line 3L.
ECON / AUTO SPD / AUTO MACH (3L)
If the descent phase is not active, this field title
is ECON until the crew enters a value in this
field. As soon as a value is entered, the title
switches to AUTO SPD xxx or to AUTO MACH
xxx, and the ACT MODE (1L) is modified
accordingly, as shown here.
A clearing action on this field reverts to the
ECON speed/Mach and updates the ACT MODE
accordingly.
If the descent phase is active, this field can not
be modified.
PERF APPR PAGE
This page is dedicated to the approach
settings. It can be accessed by pressing the
PERF key when the approach phase is active,
or by pressing the 6R key in the PERF DES
page.
QNH (1L)
You can enter the QNH here in hecto-Pascals
or in inches of mercury. It is mandatory
because it is used by the FMGC to perform the
FMGC
Airbus Series Vol.1
(c) 2007 Wilco Publishing www.wilcopub.com - www.FeelThere.com 91
approach calculation.
TEMP (2L)
Enter the temperature forecasted at the
arrival airport, in °C.
MAG WIND (3L)
Enter the forecasted wind (direction/velocity)
at the arrival airport. This entry is optional, but
if you have the information available, the
FMGC will perform better predictions.
TRANS ALT (4L)
This is the transition altitude used for the
approach, which can be different from the
transition altitude used at departure. By
default, it is set to 18000 feet because it is the
default transition altitude managed by Flight
Simulator (small characters).
Clearing this line brings back the default
value.
VAPP (5L)
This is the approach speed. If it is drawn with
small characters, the value displayed is the
value computed by the FMGC, according to the
aircraft gross weight and the current wind. You
can enter any other value in this field. Clearing
this line brings back the value computed by
the FMGC.
Vapp is the speed that will be used by the
FMGC if the FCU is in managed speed during
the final approach, with landing flap
configuration.
PREV PHASE (6L)
You can click 6L to come back to the PERF DES
page, unless the approach phase is active.
FINAL (1R)
This is a reminder of the arrival runway. It is
not modifiable.
MDA and DH (2R, 3R)
MDA is the minimum descent altitude, DH is
the decision height. Remember that MDA is an
altitude, which is measured from the seal level
altitude, and DH is a height which is measured
from the ground.
The MDA is the minimum altitude at which the
aircraft can descend safely, and the DH is the
height at which the captain decides if the
aircraft lands or go around (especially
important with low visibility).
The MDA and the DH can not be defined
together, you must choose one or the other. As
soon as one is filled, the other is erased. If DH
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Airbus_Pilots Guide_UK空客飞行员指南(50)
