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Spoiler panel status.
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Deployed or retracted position.
Spoilers position and condition is continuously monitored and any fault detected is displayed on EICAS.
FLIGHT CONTROLS
SLAT OUT
FLAP 30
AIL AIL
ELEV ELEV
RUDDER
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
SPOILER PRIMARY EICAS DISPLAY
Spoiler operation can be monitored when the pop-up window is displayed on the primary EICAS page.
Spoilers Display
Multi-function and ground spoilers are shown in the deployed position.
GF1010_051
The following are examples of spoiler configurations displayed on the primary EICAS page:
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
FLIGHT SPOILER CONTROL LEVER
The flight spoiler control lever (FSCL) located in the centre pedestal (flight compartment) is the input handle which controls the MFS surfaces for lift dumping in flight. Markings on the mounting plate are illuminated by integral lighting located in the lever. The FSCL includes four sensors to transmit input lever command to the FCUs.
The MFS may be extended to any position, between 0 and FULL, as required for the intended flight path. The MAX position is used for emergency descent whereby all MFS deploy if flaps are retracted to zero degrees. The FSCL unlatch selector located on top of the FSCL must be pressed to release the lever from the zero position and from the FULL to MAX position. If the flaps are not retracted, only the inboard MFS are available for lift dump and the MAX selection will have no effect.
GND LIFT DUMPING/AUTOBRAKE CONTROL PANEL
The panel is located in the centre pedestal (flight compartment) and is used to manually arm or disarm the spoiler system.
GND LIFT AUTO BRAKE DUMPING
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
SPOILER FUNCTIONS
The spoiler system performs the following:
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ROLL ASSIST . by asymmetric deployment of up to four pairs of MFS to augment the ailerons control. The surface deflection is a function of the handwheel roll angle (derived from the average of two sensors) compensated with airspeed and flaps position. Right wing down command deploys the right spoilers, left remain stowed. Left wing down deploys the left spoilers, right spoilers remain stowed.
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PROPORTIONAL LIFT DUMPING . by symmetric deployment of up to four pairs of MFS commanded by the FSCL. Four pairs of MFS may be deployed when the flaps are fully retracted. Two pairs (inboard) of MFS will deploy when the flaps are in any of their extended position detents. Under this condition, the outboard MFS will be available for roll assistance only.
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GROUND LIFT DUMPING . through the symmetric full extension of all spoilers upon landing or rejected take-off condition. At initial touchdown with at least one left or right main landing gear indicating on-ground (wheels spinning up), the two pairs of GS deploy first. The deployment of the two pairs of MFS is delayed (until weight on wheels) slightly to prolong roll control.
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