190-00663-00 Rev. A Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT 7-27AFCSNAVIGATION MODE (GPS, VOR, LOC)NOTE: The selected navigation receiver must have a valid VOR or LOC signal or active GPS course for theflight director to enter Navigation Mode.Pressing the NAV Key selects Navigation Mode. Navigation Mode acquires and tracks the selected navigationsource (GPS, VOR, LOC). The flight director follows GPS roll steering commands when GPS is the selectednavigation source. When the navigation source is VOR or LOC, the flight director creates roll steering commandsfrom the Selected Course and deviation. Navigation Mode can also be used to fly non-precision GPS and LOCapproaches where vertical guidance is not required.If the Course Deviation Indicator (CDI) shows greater than one dot when the NAV Key is pressed, the selectedmode is armed. If the CDI shows less than one dot, Navigation Mode is automatically captured when the NAVKey is pressed. The armed annunciation appears in white to the left of the active lateral mode.Figure 7-27 GPS Navigation Mode ArmedWhen the CDI has automatically switched from GPS to LOC during a LOC/ILS approach, GPS NavigationMode remains active, providing GPS steering guidance until the localizer signal is captured. LOC NavigationMode is armed automatically when the navigation source switch takes place if the APR Key is not pressed priorto the automatic source switch.If Navigation Mode is active and either of the following occur, the flight 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 navigationsource switch from GPS to LOC
