Disengaging The Autopilot And Yaw Damper - Garmin G900X Pilot's Manual

AUTOMATIC FLIGHT CONTROL SYSTEM

DISENGAGING THE AUTOPILOT AND YAW DAMPER

The autopilot is manually disengaged by pushing the AP DISC Switch, GA Button, AP TRIM ARM Switch, or
the AP Key on the MFD. Manual disengagement is indicated by a five-second flashing yellow 'AP' annunciation
and a two-second autopilot disconnect aural alert. After manual disengagement, the autopilot disconnect aural
alert may be cancelled by pushing the AP TRIM ARM or AP DISC Switch (AP DISC Switch also cancels the
flashing 'AP' annunciation).
The YD Key or AP DISC Switch can be used to disengage the yaw damper. The 'YD' annunciation turns
yellow and flashes for five seconds upon disengagement.
Automatic autopilot disengagement is indicated by a flashing red 'AP' annunciation and by the autopilot
disconnect aural alert, which continue until acknowledged by pushing the AP DISC or AP TRIM ARM Switch.
Automatic disengagement occurs due to:
• System failure
• Inability to compute default flight director modes
(FD also disengages automatically)
Automatic yaw damper disengagement occurs when autopilot disengagement is caused by a failure in a
parameter also affecting the yaw damper. This means that the yaw damper can remain operational in some
cases where the autopilot automatically disengages. The yaw damper also disengages upon a localized failure
in the yaw damper system.
520
Figure 7-28 Manual Autopilot Disengagement
• Invalid sensor data
• Stall Warning
Figure 7-29 Automatic Autopilot Disengagement
Figure 7-29 Automatic Autopilot Disengagement
Garmin G900X Pilot's Guide 190-00726-00 Rev. J