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A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLIGHT CONTROL SYSTEM - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-27-20-30 P 2/22
FCOM 19 AUG 10
In clean
configuration
: 1 °/s of rudder travel
Slats/flaps
extended
: 1 °/s of rudder travel for quick inputs
3 °/s for inputs longer than 1.5 s
(2) RESET pushbutton
By pushing the RESET pushbutton, the zero trim position is ordered at 3 °/s.
Note: The rudder trim rotary switch, and the RESET pushbutton, are not active with
autopilot engaged.
(3) RUD TRIM Position Indicator
Displays rudder trim direction (L or R) and value (0 to 25 °).
(4) SPEEDBRAKE lever
Controls :
The position of ‐ the speedbrake surfaces.
To set speedbrake surfaces to a required position, the speedbrake lever has to be pushed
down and set to the required position. A “hardpoint” is provided at “½” SPEEDBRAKE
position.
‐ The manual preselection of the ground spoilers.
To arm the ground spoilers, the lever must be pulled up when in the RET position.
When the lever is armed (or reverse thrust is selected), all spoilers' surfaces will
automatically extend at landing, or in case of a rejected takeoff.
(5) PITCH TRIM wheel
Both pitch trim wheels provide mechanical control of the THS and have priority over electrical
control.
Note: Crew action on the pitch trim wheel does not disconnect the PRIMs (micro-switches,
actuated by the override mechanism, ensure that the computers remain synchronized
with the manually-selected position).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLIGHT CONTROL SYSTEM - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-27-20-30 P 3/22
FCOM 19 AUG 10
The THS is manually-controlled on ground for the THS setting, before takeoff, and in flight,
when in direct law :
Before takeoff, the pilot sets the THS to the angular value, ‐ determined as a function of the
aircraft CG, using the CG scale on the wheel. The relationship between the aircraft CG and
the THS setting on the trim wheel is only applicable for takeoff. The limits of the THS normal
setting range for takeoff are indicated by a green band on the pitch trim wheel
‐ In flight, when in direct law, the pilot uses the THS conventionally to fly in trim. In flight, the
aircraft pitch trim setting depends on the aircraft CG, weight, altitude and speed. As the
result, the relation between the aircraft CG, and the THS setting displayed on the pitch trim
wheel, does not apply in flight.
After nosewheel touchdown, when the pitch attitude becomes less than 2.5 ° for more than 5 s ,
and if the ground spoilers are retracted, pitch trim is automatically reset to 5 ° up.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLIGHT CONTROL SYSTEM - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-27-20-30 P 4/22
FCOM 19 AUG 10
PEDESTAL
Applicable to: ,
(1) RUD TRIM selector
Controls the rudder trim actuator, which moves the neutral point of the artificial feel by an
equivalent of :
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLIGHT CONTROL SYSTEM - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-27-20-30 P 5/22
FCOM 19 AUG 10
In clean
configuration
: 1 °/s of rudder travel
Slats/flaps
extended
: 1 °/s of rudder travel for quick inputs
3 °/s for inputs longer than 1.5 s
(2) RESET pushbutton
By pushing the RESET pushbutton, the zero trim position is ordered at 3 °/s.
Note: The rudder trim rotary switch, and the RESET pushbutton, are not active with
autopilot engaged.
(3) RUD TRIM Position Indicator
Displays rudder trim direction (L or R) and value (0 to 25 °).
(4) SPEEDBRAKE lever
Controls :
The position of ‐ the speedbrake surfaces.
To set speedbrake surfaces to a required position, the speedbrake lever has to be pushed
down and set to the required position. A “hardpoint” is provided at “½” SPEEDBRAKE
position.
‐ The manual preselection of the ground spoilers.
To arm the ground spoilers, the lever must be pulled up when in the RET position.
When the lever is armed (or reverse thrust is selected), all spoilers' surfaces will
automatically extend at landing, or in case of a rejected takeoff.
(5) PITCH TRIM wheel
Both pitch trim wheels provide mechanical control of the THS and have priority over electrical
control.
Note: Crew action on the pitch trim wheel does not disconnect the PRIMs (micro-switches,
　
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