S-TEC System 55X, Operating Handbook

Page: 48 / 56

2nd Ed: May 31, 2002 4-39
SYS FIFTY FIVE X POH
4.6.2 Yaw Damper Pre-flight Procedures
1. Place the Yaw Damper Master switch in the YAW AUTO position and
engage the autopilot HDG Mode. Note that the Yaw Damper engages
and causes increased pedal force.
2. Rotate the Yaw Damper Trim Control clockwise and note that the right
rudder pedal moves slowly forward. Rotate the Yaw Damper Trim
Control counter-clockwise and note that the left rudder pedal moves
forward. Re-center the trim control.
3. Press the Autopilot Disconnect Trim Interrupt switch on the control
wheel and note that both the Autopilot and Yaw Damper disconnect.
Assure freedom of controls.
4. Yaw Damper must be OFF for takeoff and landing.
4.6.3 Yaw Damper In-flight Procedures
1. Trim the aircraft for the phase of flight being conducted (climb, cruise,
descent) with the rudder trim.
2. Adjust the Yaw Damper Trim Control to center.
3. With the Yaw Damper Master switch in the AUTO position, engage the
Autopilot and note that Yaw Damper engages.
4. Make small Yaw Damper Trim adjustments as necessary to keep the
slip / skid ball centered.
5. For Yaw Damper use with the Autopilot disengaged, move the Yaw
Damper Master switch to ON.
6. DISCONNECT the Yaw Damper for landing.
NOTE:
After making large power, configuration, or flight profile
changes, it is advisable to disconnect the Yaw Damper
to verify that the rudder is in trim then re-engage theYaw
Damper. The Yaw Damper will not trim the rudder
automatically.