190-00962-02 Rev. A
Garmin G1000 Pilot’s Guide for the Diamond DA42NG
457
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
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.
Figure 7-30 Manual Autopilot 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)
• Invalid sensor data
• Stall Warning
Figure 7-31 Automatic Autopilot Disengagement
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.
Figure 7-32 Automatic Autopilot Disengagement
