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(Refer to DSC-27-20-10-20-A PROTECTIONS - HIGH ANGLE OF ATTACK PROTECTION).
It is displayed when in pitch normal law.
(4) VMAX
The lower end of a red and black strip along the speed scale defines this speed.
It is the lowest of the following :
VMO or the ‐ speed corresponding to MMO
‐ VLE
‐ VFE
(Refer to PRO-SUP-10 Characteristic Speeds)
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
INDICATIONS ON PFD
A318/A319/A320/A321 FLEET DSC-31-40 P 20/68
FCOM 19 AUG 10
(5) Stall Warning Speed (VSW)
The top of a red and black strip along the speed scale defines this speed.
It is the speed corresponding to the stall warning. (Refer to DSC-27-20-10-20-A
PROTECTIONS - HIGH ANGLE OF ATTACK PROTECTION).
VSW information is inhibited from touchdown until 5 s after liftoff.
It is displayed when operating in pitch alternate or pitch direct law.
(1) Decision Speed (V1)
This is a blue symbol (numeral one) that the crew manually inserts via the MCDU. When it is off
the scale, the upper part of the scale shows it in numbers.
It disappears after liftoff. (Refer to PRO-SUP-10 Other Speeds).
(2) Minimum Flap Retraction Speed
This is a green symbol (letter F).
It appears when the flap selector is in position 3 or 2. (Refer to PRO-SUP-10 Characteristic
Speeds).
(3) Minimum Slat Retraction Speed
This is a green symbol (letter S).
It appears when the flap selector is in position 1. (Refer to PRO-SUP-10 Characteristic
Speeds).
(4) VFE NEXT
The VFE next symbol is an amber equal sign showing the VFE corresponding to the next flap
lever position.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
INDICATIONS ON PFD
A318/A319/A320/A321 FLEET DSC-31-40 P 21/68
FCOM 19 AUG 10
It appears when the aircraft altitude is below 15 000 ft or 20 000 ft, depending upon the FAC
standard. (Refer to PRO-SUP-10 Protection Speeds).
(5) Green Dot (Engine-out operating speed in clean configuration)
This green dot appears, when the aircraft is flying in the clean configuration.
It shows the speed corresponding to the best lift-to-drag ratio.
(6) Rotation speed : (VR)
VR is entered on the PERF takeoff page of the MCDU, and is indicated by a cyan circle.
This cyan circle is visible during takeoff.
Note: V2 is represented by the target speed index during takeoff.
V2 is manually inserted by the crew via the MCDU.
ALTITUDE
Applicable to:
(1) Altitude Indication
This appears both as a white moving scale, and as a green digital readout on a grey
background. Small white marks are positioned on the scale against the round values (e.g.
280, 290...). “NEG” appears in the window in white for negative values. The altitude window
changes from yellow to amber, if the aircraft deviates from the FCU-selected altitude or flight
level.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
INDICATIONS ON PFD
A318/A319/A320/A321 FLEET DSC-31-40 P 22/68
FCOM 19 AUG 10
On any approach for which an MDA (MDH) is entered in the FMGS, the altitude numbers
change from green to amber, when the aircraft goes below the MDA (MDH).
(2) Vertical Deviation (magenta)
This symbol appears next to the altitude corresponding to the theoretical vertical profile
computed by the FMGC. It is displayed from the top of descent down to the MAP altitude.
The pilot can read the VDEV directly from the altitude scale. The range is ± 500 ft. When the
VDEV value exceeds ± 500 ft, the symbol stays at the range limit and the PROG page displays
the exact value.
(3) Target Altitude or Selected Flight Level Symbol (blue)
This symbol shows the FCU selected altitude (if QNH or QFE baro reference is selected) or the
selected flight level (if STD baro reference is selected.)
When the FMGC operates in the vertical managed mode, this symbol is magenta if it
represents a flight plan altitude constraint that the FMGC will follow. If the target altitude or
flight level is on the scale, the symbol is displayed and the numerical value appears inside the
symbol.
If it is off the scale, the symbol is not displayed, and the numerical value appears above or
underneath the scale.
(4) Barometric Reference
The display shows “STD” or it shows “QNH” or "QFE" and the numerical setting in
hectoPascals or inches of mercury.
It pulses when the selection made by the pilot is not correct (STD not selected above transition
altitude in climb or STD still selected in approach below transition level or 2 500 ft radio height if
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 3(107)
