Section VII
Systems
VII-22-12
YD button - Engages or disengages the yaw damper. Manual
engagement/disengagement of the yaw damper is
completely independent of autopilot engagement.
CPL button - Controls the routing of flight guidance commands to the
autopilot and flight directors. The coupled side is indicated
by illumination of the appropriate arrow on the PFD AP
display. When the left arrow is on, the autopilot uses flight
guidance commands from the pilot channel. When the
right arrow is on, the autopilot uses guidance commands
from the copilot channel. Except when in ILS approach
submode or go-around modes, the CPL pushbutton
controls which flight guidance commands drive the flight
director command bars. In approach and go-around
modes, the flight directors operate independently.
The following buttons are momentary buttons used to select/deselect
modes. Unless the active mode is approach, selection of a lateral or
vertical mode respectively, automatically deselects any other lateral or
vertical mode. Unless the active mode is go-around, a second press
deselects the mode. Go-around is cleared by autopilot engagement or
selection of another mode:
HDG button - Automatically selects and clears either heading select
mode or track select mode, based upon the setting of the
HDG select knob. When in heading select mode, or track
select mode, changing the position of the HDG select
knob clears one mode and selects the other.
(Continued)
10 Sep 2006
