Garmin G1000 Piper PA-46 Matrix - Manual (Page 453)

190-01108-00 Rev. B Garmin G1000 Pilot’s Guide for the Piper PA-46 Mirage/Matrix 439
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
DISENGAGEMENT
NOTE: Pressing the AP Key does not disengage the yaw damper.
The autopilot may be manually disengaged by pushing the AP DISC, GA, or MEPT ARM Switch, or the
AP Key on the AFCS Control Unit. Manual disengagement is indicated by a five-second flashing yellow ‘AP’
annunciation and a three-second autopilot disconnect aural alert. The AP DISC or MEPT ARM Switch may be
used to cancel the aural alert.
Figure 7-31 Manual Autopilot Disengagement
The YD Key and AP DISC Switches can be used to disengage the yaw damper (the autopilot, if engaged, also
disengages when the AP DISC Switch is pressed). The ‘YD’ and ‘AP’ annunciations turn yellow and flash for 5
seconds upon disengagement.
Figure 7-32 Yaw Damper Disengagement
Automatic autopilot disengagement is indicated by a flashing red and white ‘AP’ annunciation and by the
autopilot disconnect aural alert, which continue until acknowledged by pushing the AP DISC or MEPT ARM
Switch. Automatic autopilot disengagement occurs due to:
• System failure
• Invalid sensor data
• Inability to compute default flight director modes (FD also disengages automatically)
Yaw damper disengagement is indicated by a five-second flashing yellow ‘YD’ annunciation. Automatic yaw
damper disengagement occurs when autopilot disengagement is caused by failure in a parameter also affecting
the yaw damper. This means the yaw damper can remain operational in some cases where the autopilot
automatically disengages. A localized failure in the yaw damper system or invalid sensor data also cause yaw
damper disengagement.
Figure 7-33 Automatic Autopilot and
Yaw Damper Disengagement