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landing gear is extended. Computed by the
FACs.
Green Dot Speed
Appears while flying in the clean configuration.
Represents the best lifttodrag,
as computed
by the FACs.
Speed Indicators
· F Minimum
Flap Retraction Speed Appears
in green next to the minimum
speed for selecting position 1 when the
FLAPS selector is in position 3 or 2.
Computed by the FACs.
· S Minimum
Slat Retraction Speed Appears
in green next to the minimum
speed for selecting position 0 when the
FLAPS selector is in position 1.
Computed by the FACs.
· 1 Decision
Speed (V1) Appears
in
blue next to the speed entered by the
crew through the MCDU. When out of
indication range, appears on upper
part of scale. Disappears after liftoff.
·
Actual Airspeed Reference Line
Indicates the actual airspeed where the scale
value moves in front of the line. Airspeed
indication starts from 30 knots.
Speed Trend Arrow
Starting from the airspeed reference line,
points to the speed value which will be attained
in 10 seconds if the acceleration remains
constant. Appears only when speed difference
is greater than two knots. Disappears when
speed difference is less than one knot, or if
FACs fail
Target Airspeed Pointer
Points to the target airspeed value or the
airspeed corresponding to the target Mach
number. The pointer is magenta when the
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Flight Deck Documentation AIRBUS A320
12.11.06 Ralf Anderseck Seite 45target
airspeed is the value computed by the
FMGC in managed speed mode. The pointer is
blue when the target airspeed is manually
entered on the FMGC or manually entered on
the FCU. When the target airspeed is out of
the speed tape range, the target speed value is
displayed above or below the speed tape in
numeric form.
Minimum Selectable Speed (VLS)
Represents 1.13 stall speed (VS) during
takeoff or following touch and go as computed
by the FACs.
Alpha Protection Speed
Represents the speed corresponding to the
angle of attack at which alpha protection
activates, as computed in pitch normal law by
the FACs.
Mach Number
Displays when number is greater than .5.
ILS Information
The following appears when an ILS frequency
and course have been selected in the MCDU
and when the ILS switch on the EFIS control
panel is pushed:
· ILS identification as decoded from the
ILS receiver.
· ILS frequency.
· DME distance if a DME is colocated.
PFD Attitude Indications
Fixed Airplane Symbol
Pitch Scale
Provides graduations between 80° nose up
and 80° nose down with 2.5° increments
between 10° nose down and 30° nose up.
Roll Index
Points to angle of bank on roll scale.
Roll Scale
Provides graduations at 0, 10, 20, 30 and 45
degrees of bank.
Side Slip Index / Beta Target
Indicates lateral acceleration on the ground
and side slip in flight as provided by ADIRS.
Reaches stop at .3Gs.
Bank Angle Limit Indicator
Indicates bank angle limitation in green at ±67°
on roll scale. Replaced by amber "X" with loss
of normal law.
Glide Slope Deviation Scale
Appears when ILS switch is pushed. Flashes
continuously when the deviation exceeds one
dot for two seconds or more (above 100 feet
RA).
Glide Slope Deviation Index and Localizer
Index
Appear when glide slope and localizer signals
are valid if deviation scales are displayed.
Localizer Scale
Appears when ILS switch is pushed. Flashes
continuously when the deviation exceeds onefourth
dot for two seconds or more (above 15
feet RA).
Target Altitude or Selected FL Indicator
Indicates the FCUselected
target altitude or
the selected flight level.
Altitude Indication
Displays altitude in green on a white moving
scale. "NEG" appears in window to indicate
negative altitude. Window changes from yellow
to amber if the airplane deviates from the
selected altitude or flight level. Numerical value
changes from green to amber when the
airplane flies below any MDA entered in the
MCDU.
Barometric Reference Indication
Indicates that either STD or QNH has been
selected as barometric reference.
PFD Vertical Speed IndicationsLabel
Vertical Speed Scale
Displays white on grey. Graduated each 500
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A320 Flight Deck Documentation(16)
