TM 1-1510-262-10
1.
Pitch Wheel
2.
Bank Limit switch-Indicator
3.
Soft Ride Button-Indicator
4.
Turn Knob
5.
Yaw Damper Button-Indicator
6.
Autopilot Button-Indicator
7.
Trim Annunciators
Figure 3-8. Autopilot Controller
(1) Pitch wheel. Rotating the pitch wheel with the autopilot engaged will result in a change in pitch attitude
proportional to the amount of rotation and in the direction of wheel movement. Movement of the pitch wheel
cancels only altitude hold (ALT HOLD ) or altitude select capture (ALT SEL CAP ). With the vertical modes of
vertical speed (VS ) or indicated air speed (IAS ) selected on the mode selector, rotation of the pitch wheel will
change the respective air data command vertical mode reference (with autopilot engaged or disengaged) which is
displayed on the PFD s. VS or IAS modes may be cancelled by pressing the mode button on the mode selector
panel. Movement of the pitch wheel has no effect with the autopilot coupled to the glideslope.
(2) Bank limit button-indicator. The BANK LIMIT switch provides a lower maximum bank angle while in
the heading select mode. Depressing the bank limit button-indicator will illuminate the LOW indicator on the switch
face. Depressing the switch again will cause the LOW indicator to be extinguished and the autopilot to return to
normal bank limits. The lower bank limit is inhibited and the LOW indicator will be extinguished during NAV mode
captures. If heading select is again engaged, LOW will again be illuminated on the bank limit button-indicator.
(3) Soft ride button-indicator. The SOFT RIDE mode provides reduced pitch and roll autopilot gains
while still maintaining stability in rough air. This mode may be used with any light director mode, but should only be
selected ON in turbulence. Depressing the SOFT RIDE button-indicator will cause the ON indicator to illuminate on
the switch face. Depressing the SOFT RIDE switch with the ON indicator illuminated will disable this function and
extinguish the ON indicator.
(4) Turn knob. Rotation of the TURN knob out of the detent results in a roll command. The roll angle is
proportional and in the direction of turn knob rotation. The turn knob must be in the detent (center position) before
the autopilot can be engaged. Rotation of the turn knob cancels any other previously selected lateral mode.
(5) Yaw damper button-indicator. Depressing the yaw damper (YD ) switch will engage the yaw damper
and illuminate the ENGAGE indicator on the switch face. With the autopilot (AP ) and yaw damper (YD ) engaged,
depressing the yaw damper button-indicator will engage or disengage the yaw damper only (the autopilot will
remain engaged).
(6) Autopilot button-indicator. Depressing the autopilot (AP ) button-indicator will engage the autopilot
and yaw damper simultaneously, and will illuminate the AP and YD ENGAGE indicators on the switch face. The
autopilot may be engaged with the aircraft in any reasonable attitude. With no light director modes selected, the
autopilot will roll the aircraft to a wings level attitude upon engagement.
3-17
