FLIGHT CONTROLS
AIRPLANE
OPERATIONS
MANUAL
2-13-20
Page
6
Code
01
REVISION 18
YAW TRIM SYSTEM
Yaw trim is accomplished by an electromechanical actuator, which
receives signals from the yaw trim knob.
A continuous command of the yaw trim knob is limited to 3 seconds,
even if the trim knob is actuated longer than 3 seconds. As a result,
when manually actuating the trim, it is necessary to release the knob
after a 3-second actuation, then actuate it again to continue the trim
command. This feature intends to minimize the effects of an
inadvertent trim command failure.
Yaw trim position is presented on EICAS display.
A quick-disconnect button installed on the control wheels allows, while
kept pressed, disconnecting the yaw trim.
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