Garmin G1000 Manual

Open as PDF

next previous

Garmin G1000 Pilot’s Guide for Cessna Nav III

190-00498-07 Rev. A

434

AUTOMATIC FLIGHT CONTROL SYSTEM

SYSTEM

OVERVIEW

FLIGHT

INSTRUMENTS

EIS

AUDIO PANEL

& CNS

FLIGHT

MANAGEMENT

HAZARD

AVOIDANCE

AFCS

ADDITIONAL

FEATURES

APPENDICESINDEX

COMMAND BARS

Uponactivationoftheightdirector,CommandBarsaredisplayedonthePFDasasinglemagentacue.The

CommandBarsmovetogetherverticallytoindicatepitchcommands,andbankleftorrighttoindicateroll

commands.TheCommandBarsdonotoverridetheaircraftsymbol.

Iftheattitudeinformationsenttotheightdirectorbecomesinvalidorunavailable,theCommandBarsare

removedfromthedisplay.TheightdirectorCommandBarsalsodisappearifthepitchexceeds+30˚/-20˚or

bankexceeds65˚.

Figure 7-3 Command Bars

Aircraft Symbol

Command Bars

FLIGHT DIRECTOR MODES

Flight director modesarenormallyselected independentlyforthe pitchandrollaxes.  Unlessotherwise

speciﬁed, all mode keys are alternate action (i.e., press on, press off). In the absence of speciﬁc mode selection,

theightdirectorrevertstothedefaultpitchand/orrollmodes(s).

ArmedmodesareannunciatedinwhiteandactiveingreenintheAFCSStatusBox.Undernormaloperation

whenthecontrolfortheactiveightdirectormodeispressed,theightdirectorrevertstothedefaultmodes(s)

for the axis(es).  Automatic transition from armed to active mode is indicated by the white armed mode

annunciationmovingtothegreenactivemodeeldandashingfor10seconds.

If the information required to compute a ightdirector mode becomes invalid orunavailable,theight

directorautomaticallyrevertstothe defaultmode forthataxis. A ashingyellowmode annunciationand

annunciatorlightindicatelossofsensor(ADC)ornavigationdata(VOR,LOC,GPS,SBAS)requiredtocompute

commands.Whensuchalossoccurs,thesystemautomaticallybeginstorollthewingslevel(entersRollHold

Mode)ormaintainthepitchangle(entersPitchHoldMode),dependingontheaffectedaxis.Theashing

annunciationstopswhentheaffectedmodekeyispressedoranothermodefortheaxisisselected.Ifafter10

secondsnoactionistaken,theashingannunciationstops.

Figure 7-4 Loss of VOR Signal

Theightdirectorisautomaticallydisablediftheattitudeinformationrequiredtocomputethedefaultight

director modes becomes invalid or unavailable.