Garmin G1000 PDAs & Smartphones User Manual


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190-00498-07 Rev. A
Garmin G1000 Pilot’s Guide for Cessna Nav III
445
AUTOMATIC FLIGHT CONTROL SYSTEM
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
aUtOmatic ReveRsiOn tO Pitch hOlD mODe
SeveralsituationscanoccurwhileVerticalPathTrackingModeisactivewhichcausetheightdirectorto
reverttoPitchHoldMode:
•Verticaldeviationexceeds200feetduringanoverspeedcondition.
•Verticaldeviationexperiencesadiscontinuitythatbothexceeds200feetinmagnitudeandresultsinthe
verticaldeviationexceeding200feetinmagnitude.Suchdiscontinuitiesareusuallycausedbyightplan
changes that affect the vertical profile.
•Verticaldeviationbecomesinvalid(theVerticalDeviationIndicatorisremovedfromthePFD).
•AdisplayentersReversionaryMode(thisdoesnotapplytoanactiveverticaldirect-to).
UnlessVNVisdisabled,VerticalPathTrackingModeandtheappropriatealtitudecapturemodebecome
armedfollowingthereversiontoPitchHoldModetoallowforpossibleprolerecapture.
nOn-Path Descents
PitchHold,VerticalSpeed,andFlightLevelChangemodescanalsobeusedtoynon-pathdescents
whileVNVightcontrolisselected.IftheVS or FLCKeyispressedwhileVerticalPathTrackingModeis
selected,VerticalPathTrackingModerevertstoarmedalongwiththeappropriatealtitudecapturemodeto
allowprolere-capture.
Figure 7-13 Flight Level Change VNV Non-Path Descent
Topreventimmediateprolere-capture,thefollowingmustbesatised:
•Atleast10secondshavepassedsincethenon-pathtransitionwasinitiated
•Verticaldeviationfromtheprolehasexceeded250feet,butisnowlessthan200feet
PressingtheVNVKeytwicere-armsVerticalPathTrackingforimmediateprolere-capture.
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