Cockpit Reference Guide

Garmin G1000 Pilot’s Guide for the Piper PA-46 Meridian
190-00763-02 Rev. A
426
AUTOMATIC FLIGHT CONTROL SYSTEM
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICESINDEX
NAVIGATION MODES (GPS, VOR, LOC)
NOTE: The selected navigation receiver must have a valid VOR or LOC signal or active GPS course for the
flight director to enter Navigation Mode.
Pressing the NAVKeyselectsNavigationMode.NavigationModeacquiresandtrackstheselectednavigation
source (GPS, VOR, LOC). The flight director follows GPS roll steering commands when GPS is the selected
navigationsource.WhenthenavigationsourceisVORorLOC,theightdirectorcreatesrollsteeringcommands
from the Selected Course and deviation. Navigation Mode can also be used to fly non-precision GPS and LOC
approaches where vertical guidance is not required.
IftheCourseDeviationIndicator(CDI)showsgreaterthanonedotwhentheNAVKeyispressed,theselected
modeisarmed.IftheCDIislessthanonedot,NavigationModeisautomaticallycapturedwhentheNAVKey
is pressed. The armed annunciation appears in white to the left of the active lateral mode.
Figure 7-24 GPS Navigation Mode Armed
WhentheCDIhasautomaticallyswitchedfromGPStoLOCduringaLOC/ILSapproach,GPSNavigation
Mode remains active, providing GPS steering guidance until the localizer signal is captured. LOC Navigation
Mode is armed automatically when the navigation source switch takes place if the APRKeyisnotpressedprior
to the automatic source switch.
IfNavigationModeisactiveandeitherofthefollowingoccur,theightdirectorrevertstoRollHoldMode
(wings rolled level):
•DifferentVORtunedwhileinVORNavigationMode(VORNavigationModerevertstoarmed)
•Navigationsourcemanuallyswitched(withtheCDI Softkey)
•DuringaLOC/ILSapproach,theFAFiscrossedwhileinGPSNavigationModeaftertheautomaticnavigation
source switch from GPS to LOC