3-34 3rd Ed. Sep 30, 06
S–TEC
3.5.1 AUTO Mode
With the Yaw Damper Master Switch in the AUTO position, the yaw servo will
become automatically engaged whenever a roll mode (HDG, NAV, NAV APR,
REV, REV APR, NAV GPSS) is engaged.
3.5.2 ON Mode
With the Yaw Damper Master Switch in the ON position, the yaw servo will be
engaged at all times, entirely independent of autopilot operation.
3.5.3 Yaw Damper Trim
With the yaw servo engaged, rotate the Yaw Damper Trim Knob to center the
slip/skid ball.
3.6 Autopilot Disconnect
The autopilot can be disconnected by any of the following means:
1. Press remote AP DISC / TRIM INTR Switch located on Control Wheel.
2. Press either forward or aft on both segments of remote Manual Electric Trim
Switch located on Control Wheel, whenever a pitch mode (ALT, VS, GS) is
engaged.
3. Set AP Master Switch to OFF position.
4. Pull AP Circuit Breaker.
3.7 Automatic Trim Disable
In the event of a trim runaway, the automatic trim function can be disabled by
executing the following sequence:
1. Press/Hold remote AP DISC / TRIM INTR Switch located on Control Wheel.
2. Set Trim Master Switch to OFF position.
3. Pull Trim Circuit Breaker.
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