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RTL : RUDDER ANGLE
40
20
0
0 200 400
Flaps DN
Flaps UP
2.3
CAS
25
37
155
GX_10_011
For Training Purposes Only
Sept 04
10-15
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
Rudder Surface Position Indication
Left and right rudder surface position is displayed by a moving pointer on the FLIGHT
CONTROL page. A single pointer indicates left and right rudder surface positions.
Rudder Surface Position Indication – Rudder Limiting
Rudder limiting at high speed will be displayed on the flight control synoptic with a
reduction in the rudder travel arc.
ELEV
RUDDER
ELEV
Scale Pointer
Filled rudder cross-section
directed toward the center
of the scale.
Scale
Arc represents the left and
right rudder travel paths.
Rudder Limit Bug
Indicates the position and
status of the rudder limiter.
• Control active – bug color
is white.
• Control inactive – bug
color is amber.
• Invalid – bug is removed.
GX_10_012
AIL
ELEV
RUDDER
AIL
ELEV
AIL
ELEV
RUDDER
AIL
ELEV
Rudder
Limit Bug
HIGH SPEED
LOW SPEED
GX_10_013
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
10-16 For Training Purposes Only
Sept 04
Rudder Trim
Rudder trim is available by rotating the RUD TRIM control switch on the trim control
panel (center pedestal) in the desired direction. The control provides signals to a trim
actuator that repositions the rudder neutral point.
Hydraulic power is necessary to set rudder trim. Rudder trim position is displayed on
the EICAS page, along with the allowable takeoff green band.
A “CONFIG RUD TRIM” red warning message is accompanied by a “NO
TAKEOFF” voice message, and is displayed during the takeoff roll if the rudder trim
is set outside the allowable takeoff range.
NL NR
CH1 CH2
STAB
RUD
PUSH OFF/RESET
AIL
TRIMS
R
W
D
L
W
D
OFF OFF
GX_10_014
Rudder Trim Switch
Located on the trim control
panel (pedestal). Switch must
be rotated fully left or right to
activate the trim. Switch is
spring-loaded to the center
position.
Trim Scales
Rudder trim range for
nose left, center and
nose right indications.
Pointer
Moves horizontally along the
scale to indicate the trim setting.
Green Band (takeoff)
Replaces the center tick mark.
Visible on the ground only.
NL
NR
– Nose left.
– Nose right
NL RUDDER NR
For Training Purposes Only
Sept 04
10-17
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
Rudder Control Schematic
AIL
ELEV
RUDDER
AIL
ELEV
GX_10_015
PILOT’S
RUDDER
PEDALS
COPILOT’S
RUDDER
PEDALS
Rudder
(position to
EICAS Flight
Control Page)
INTEGRATED AVIONICS
COMPUTER
FGC 1 FGC 2
RUDDER TRIM
YAW DAMPER
RUDDER LIMITER
M
AFT CABLE
QUADRANT AND
FEEL MECHANISM
SPLIT CABLE
QUADRANT
CONFIGURATION
WARNING
“NO TAKEOFF”
CONFIG RUD TRIM
Legend
Electrical Input
Mechanical Input
Cable Input
CRS 2
PUSH DCT
Honeywell
AP FD
CPL
YD
PCUs
NL NR
CH1 CH2
STAB
RUD
PUSH OFF/RESET
AIL
TRIMS
R
W
D
L
W
D
OFF OFF
ND
STAB
–TRIMS–
NL RUDDER NR
AIL
LWD RWD
7.2
NU
P I LOT T R A I N I N G GU I D E
FLIGHT CONTROLS
10-18 For Training Purposes Only
Sept 04
ELEVATOR CONTROL
Longitudinal control is provided by elevators operating in relation to control column
displacement, and supplemented by a moveable horizontal stabilizer for maintaining
longitudinal (pitch) trim. Pilot inputs to the elevator circuit are from the dual control
columns which are normally interconnected through a pitch disconnect mechanism.
ELEVATOR CONTROL GENERAL ARRANGEMENT
Elevator Control System
Two separate pitch control systems are provided: the pilot’s side operates the left-hand
elevator and the copilot’s side operates the right-hand elevator. Normally, both control
systems are interconnected through a torque tube assembly, and there is simultaneous
movement of both elevators.
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