Extra EA 400 - In Flight; Section 5 - Performance; Section 6 - Weight and Balance; Section 7 - Description and Operation of the Airplane and Its Systems

Section 907 Pilot’s Operating Handbook
S-TEC Yaw Trim System EXTRA 500
907.4.b In Flight
1 Center yaw trim control knob and engage roll axis of autopilot.
2 To engage Yaw Trim System, select
AUTOPILOT YAW
DAMPER
.
3 Make small trim adjustments using yaw trim control knob, as
required, during airspeed and power changes.
Note The autopilot may be used without the yaw trim system, if
desired, but the pilot will be required use manual rudder
inputs to maintain yaw trim during power, airspeed and
configuration changes.
907.5 Section 5 - Performance
Not affected.
907.6 Section 6 - Weight and Balance
Not affected.
907.7 Section 7 - Description and Operation of the
Airplane and its Systems
The yaw trim system consists of a yaw trim amplifier, a rudder
servo and an instrument panel mounted
AUTOPILOT YAW
DAMPER control switch and a YAW TRIM adjustment
potentiometer. The yaw trim amplifier also contains an
accelerometer which senses a long term out of trim condition
and produces a rudder trim signal that aids in keeping the
slip/skid ball centered. Further yaw trim changes can also be
achieved by using the pilot controlled
YAW TRIM knob.
For more detailed system description refer to S-TEC System
55X Pilot's Operating Handbook, P/N 87109, dated 05-01-08 or
later.
The
AUTOPILOT YAW DAMPER switch provides the following
two functions:
OFF - This position disengages the rudder servo by inhibiting
power to the servo engagement solenoid.
907-4 26. January 2011