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one wing decreases and increases on the other. The roll effect is obtained by the
differential deployment of left and right spoilers
SPLRS/STAB In Test
An advisory message “SPLRS/STAB IN TEST” will be displayed when the spoilers
and stab trim systems are performing self test once hydraulics are applied. The spoiler
system is inoperative throughout the duration (approximately 20 seconds) of the test.
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
10-42 For Training Purposes Only
Sept 04
Spoiler Synoptic Display
The deployment position of all spoilers is shown on the EICAS page and flight
controls page. When there is no spoiler deployment, all position vectors disappear.
Symbology at each spoiler panel display the following:
• Spoiler panel status
• Deployed or retracted indications
Spoilers position and condition is continuously monitored and any fault detected is
displayed on EICAS.
MFS AND GS POSITION VECTORS AND SCALE COLORS
Item Color
Position Vector Green if surface is green
Position Vector Amber if surface is amber
Position Scales (upper tick mark) Remain white
FLIGHT CONTROLS
FLAP 3O
AIL
ELEV
RUDDER
SLAT OUT
AIL
ELEV
GX_10_038
Spoiler Scale
The horizontal line
represents the
maximum spoiler
travel and remains as
full time display.
MFS Position Vectors
(line and arrow)
The MFS position
vectors move linearly to
the top of the scale.
Ground Spoiler
Position Vectors
(line and arrow)
The ground spoiler
position vectors will
be fully extended or
not displayed. They
will not move
linearly.
Spoiler Surface
Panel
All spoiler panel
surfaces are full
time displays.
For Training Purposes Only
Sept 04
10-43
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
Spoiler Primary EICAS Display
Spoiler operation can be monitored when the pop-up window is displayed on the
EICAS page.
The following are examples of spoiler configurations displayed on the EICAS page:
5O
O
3.4
75O
115
81
ART
I
G
N
ND
STAB
789 DN DN DN
OUT
3O
GEAR
–TRIMS–
NL RUDDER NR
AIL
LWD RWD
7.2
NU
GX_10_039
Spoilers Display
Multifunction and ground spoilers
are shown in the deployed position.
GX_10_040
ALL SPOILERS EXTENDED
(ON GROUND)
MFS EXTENDED (IN FLIGHT)
MFS FAILURE DETECTED DATA INVALID
MFS
1 & 2
Icon
MFS
3 & 4
Icon
Ground
Spoilers
Icon
3O
OUT
3O
OUT
––
–––
3O
OUT
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
10-44 For Training Purposes Only
Sept 04
Flight Spoiler Control Lever
The flight spoiler control lever (FSCL) located in the center 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 forward 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. Only the inboard pair of MFS are used in this range. 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 extended, only the inboard MFS are available for lift dump
and the MAX selection will have no effect.
For roll assist and proportional lift dumping, the spoiler scheduling depends on
handwheel roll sensors and FSCL sensors. Corrections to the scheduling is a function
of the airplane airspeed provided by the three air data computers and flap position
under control of the SFCUs.
MAX
1/2
FULL
0
FLIGHT
SPOILER
R
E
T
R
A
C
MAX T
FULL
0
1/2
GX_10_041
FSCL Unlatch Selector
• The unlatch selector located on the top of the
lever must be pressed to release and operate
the lever from the zero position, and from the
FULL to MAX position.
• There are soft detents (with friction force) at
the following positions:
– between 0 and 1/2
1/2 and FULL
• Whenever the lever is returned to the zero
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