190-00726-00 Rev. J
Garmin G900X Pilot’s Guide
519
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
ENGAGING THE AUTOPILOT AND YAW DAMPER
NOTE:
Autopilot engagement/disengagement is not equivalent to servo engagement/disengagement. Use
the
CWS
Button to disengage the pitch and roll servos while the autopilot remains active.
When the
AP
Key is pressed, the autopilot, yaw damper, and flight director are activated (if not already
engaged). The flight director engages in Pitch and Roll Hold modes when initially activated. When the
YD
Key is pressed, the system engages the yaw damper independently of the autopilot (if not already engaged).
Autopilot and yaw damper status are displayed in the center of the
AFCS Status Box. Engagement is indicated
by green ‘AP’ and ‘YD’ annunciations, respectively.
Figure 7-26 Autopilot and Yaw Damper Engaged
Autopilot
Engaged
CONTROL WHEEL STEERING
During autopilot operation, the aircraft may be hand-flown without disengaging the autopilot. Pressing and
holding the
CWS
Button disengages the pitch and roll servos from the flight control surfaces and allows the
aircraft to be hand-flown. At the same time, the flight director is synchronized to the aircraft attitude during
the maneuver. CWS activity has no effect on yaw damper engagement. The ‘AP’ annunciation is temporarily
replaced by ‘CWS’ in white for the duration of CWS maneuvers.
In most scenarios, releasing the
CWS
Button reengages the autopilot with a new reference. Refer to the flight
director modes section for CWS behavior in each mode.
Figure 7-27 CWS Annunciation
Control Wheel Steering
