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Applicable to: ALL
With the nosewheel on ground, pitch trim automatically resets to zero. The pilot should select CONF
2 and add thrust. He must always move the thrust levers to TOGA to bring up the speed reference
system (SRS), and then reduce to a lower thrust (not less than CL), if he chooses. Takeoff may be
a little out of trim, which may affect the rotation slightly, but once the aircraft is off the ground, the
control law holds the “out of trim”, then retrims at 50 ft.
STALL WARNING
Applicable to: ALL
An aural “STALL”, warning continuously sounds at low speeds in ALTN or DIRECT laws. However,
spurious stall warning may sound in NORMAL law, if an Angle-Of-Attack (AOA) is damaged. In any
case, upon hearing it, the pilot must return to the normal operating speed by taking conventional
actions with the controls :
At lift-off :
THRUST LEVERS..................................................................................................................TOGA
At the same time
PITCH ATTITUDE.................................................................................................................. 12.5 °
BANK ANGLE............................................................................................... ROLL WINGS LEVEL
SPEEDBRAKES........................................................................................... CHECK RETRACTED
Note: When a safe flight path and speed are achieved and maintained, if stall warning is still
activated, consider a spurious stall warning
During any other flight phases after lift-off :
THRUST LEVERS..................................................................................................................TOGA
At the same time
PITCH ATTITUDE.............................................................................................................REDUCE
BANK ANGLE............................................................................................... ROLL WINGS LEVEL
SPEEDBRAKES........................................................................................... CHECK RETRACTED
CAUTION If a risk of ground contact exists, reduce pitch attitude no more than necessary to
allow airspeed to increase
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
FLIGHT CONTROLS (FLYING CONDITIONS) - ABNORMAL OPERATIONS
A318/A319/A320/A321 FLEET PRO-SUP-27-30 P 3/6
FCOM 19 AUG 10
After initial recovery :
Maintain the speed close to V Stall Warning speed (VSW), until it is safe to accelerate
If in clean configuration and below 20 000 ft :
FLAP 1..............................................................................................................................SELECT
When out of stall and if no threat of ground contact :
LANDING GEAR......................................................................................................................... UP
Recover normal speeds, ‐ and select flaps as required
‐ In case of one engine inoperative, use power and rudder with care
The aural stall warning may also sound at high altitude, where it warns that the aircraft is
approaching the angle of attack for the onset of buffet. To recover, the pilot must relax the back
pressure on the sidestick and reduce bank angle, if necessary. When the stall warning stops, the
pilot can increase back pressure again, if necessary, to return to the planned trajectory.
ABNORMAL CONTROL LAWS - GENERAL
Applicable to: ALL
ALTERNATE LAW
Pitch alternate and roll direct is the first level of degraded control law, resulting from some double
failures.
The autopilot may be available, depending on the cause and type of failure(s).
DIRECT LAW
The sidestick is directly coupled to the controls via the computers, but without any of the
stabilization feedbacks. In effect, this law turns the aircraft into a conventional aircraft, but is
compensated for configuration and CG. The pilot must use manual pitch trim, as is signaled on the
PFD. The autopilot is not available.
MECHANICAL BACKUP
The pilot can use the pitch trim and rudder to control the aircraft for short periods of total loss of
fly-by-wire.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
FLIGHT CONTROLS (FLYING CONDITIONS) - ABNORMAL OPERATIONS
A318/A319/A320/A321 FLEET PRO-SUP-27-30 P 4/6
FCOM 19 AUG 10
ABNORMAL CONTROL LAWS - IN DETAIL
Applicable to: ALL
ALTERNATE LAW
PITCH
Alternate law in pitch is almost the same (for the pilot) as the normal control laws.
However, alternate law does not maintain any of the protections, except for the load factor
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(80)
