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pressurized.
LATERAL CONSOLES
Applicable to:
SIDESTICKS
Each pilot has on his lateral console a sidestick he can use to control pitch and roll manually. Each
sidestick is springloaded to neutral.
When the autopilot is engaged, a solenoid-operated detent locks both sidesticks in the neutral
position. If the pilot applies a force above a given threshold (5 daN in pitch, 3.5 daN in roll) the
stick becomes free and the autopilot disengages.
The hand grip has two switches :
‐ Autopilot disconnect and sidestick takeover pushbutton.
‐ Push-to-talk button.
Sidestick priority logic
When only one pilot operates the sidestick, it sends his control ‐ signals to the computers.
‐ When the pilots move both side stick simultaneously in the same or opposite direction and
neither takes priority, the system adds the signals of both pilots algebraically. The total is limited
to the signal that would result from the maximum deflection of a single sidestick.
Note: In the event of simultaneous input on both sidesticks (2 ° deflection off the neutral
position in any direction) “DUAL INPUT” voice message is activated.
A pilot can deactivate the other stick and take full control by pressing and keeping pressed his
priority takeover pushbutton.
For latching the priority condition, it is recommended to press the takeover push button for more
than 40 s.
This allows the pilot to release his takeover push button without losing priority.
However, a pilot can at any time reactivate a deactivated stick by momentarily pressing the
takeover push button on either stick.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLIGHT CONTROL SYSTEM - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-27-20-30 P 9/28
FCOM 19 AUG 10
If both pilots press their takeover pushbuttons, the pilot that presses last gets priority.
Note: If an autopilot is engaged, the first action on a takeover pushbutton disengages it.
In a priority situation
‐ A red light comes on in front of the pilot whose stick is deactivated.
‐ A green light comes on in front of the pilot who has taken control, if the other stick is not in the
neutral position (to indicate a potential and unwanted control demand).
Note: If the aircraft is on the ground and commencing its takeoff run and one stick is
deactivated, this triggers the takeoff “CONFIG” warning.
LATERAL CONSOLES
Applicable to:
,
,
MSN,,,
SIDESTICKS
Each pilot has on his lateral console a sidestick he can use to control pitch and roll manually. Each
sidestick is springloaded to neutral.
When the autopilot is engaged, a solenoid-operated detent locks both sidesticks in the neutral
position. If the pilot applies a force above a given threshold (5 daN in pitch, 3.5 daN in roll) the
stick becomes free and the autopilot disengages.
The hand grip has two switches :
‐ Autopilot disconnect and sidestick takeover pushbutton.
‐ Push-to-talk button.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLIGHT CONTROL SYSTEM - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-27-20-30 P 10/28
FCOM 19 AUG 10
Sidestick priority logic
When only one pilot operates the sidestick, it sends his control ‐ signals to the computers.
‐ When the pilots move both side stick simultaneously in the same or opposite direction and
neither takes priority, the system adds the signals of both pilots algebraically. The total is limited
to the signal that would result from the maximum deflection of a single sidestick.
Note: In the event of simultaneous input on both sidesticks (2 ° deflection off the neutral
position in any direction) the two green SIDE STICK PRIORITY lights on the
glareshield come on and “DUAL INPUT” voice message is activated.
A pilot can deactivate the other stick and take full control by pressing and keeping pressed his
priority takeover pushbutton.
For latching the priority condition, it is recommended to press the takeover push button for more
than 40 s.
This allows the pilot to release his takeover push button without losing priority.
However, a pilot can at any time reactivate a deactivated stick by momentarily pressing the
takeover push button on either stick.
If both pilots press their takeover pushbuttons, the pilot that presses last gets priority.
Note: If an autopilot is engaged, the first action on a takeover pushbutton disengages it.
In a priority situation
‐ A red light comes on in front of the pilot whose stick is deactivated.
‐ A green light comes on in front of the pilot who has taken control, if the other stick is not in the
　
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