User's Manual

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