Garmin G1000 Pilot’s Guide for Cessna Nav III
190-00498-07 Rev. A
460
AUTOMATIC FLIGHT CONTROL SYSTEM
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICESINDEX
CONTROL WHEEL STEERING
Duringautopilotoperation,theaircraftmaybehand-ownwithoutdisengagingtheautopilot.Pressingand
holding the
CWS
Buttondisengagesthe pitchandrollservos fromtheightcontrol surfacesandallowsthe
aircrafttobehand-own.At thesametime,theightdirector issynchronizedtotheaircraftattitudeduring
themaneuver. 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ight
directormodessectionforCWSbehaviorineachmode.
Figure 7-27 CWS Annunciation
Control Wheel Steering
DISENGAGING THE AUTOPILOT
The autopilot is manually disengaged by pushing the
AP DISC
Switch,
GA
Switch or the
AP
Key on the
MFD. Manualdisengagementis indicatedby ave-secondashing 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 DISC
or MET Switch (AP DISCSwitchalsocancels theashing‘AP’
annunciation).
Figure 7-28 Manual Autopilot Disengagement
Automaticautopilotdisengagementis indicatedbyaashing red‘AP’annunciationandby theautopilot
disconnect aural alert, which continue until acknowledged by pushing the AP DISC or
MET
Switch.
Automatic disengagement occurs due to:
•Systemfailure
•Inability to compute default ight director
modes(FDalsodisengagesautomatically)
•Invalidsensordata
Figure 7-29 Automatic Autopilot Disengagement