Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
190-02177-02 Rev. A
377
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
Figure 7-11 Heading Select Mode
Heading Select
Mode Active
Command Bars Track
Selected Heading
Selected
Heading
Bug
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.
NOTE:
When intercepting a GPS flight plan leg, the flight director gives commands to capture the active
GPS leg at approximately a 45° angle to the track between the waypoints defining the active leg. The flight
director does not give commands to fly to the starting waypoint of the active GPS leg.
NOTE:
When making a backcourse approach, set the Selected Course to the localizer front course.
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 flight director creates roll steering
commands from the Selected Course and deviation. Navigation Mode can also be used to fly GPS and LOC
approaches where vertical guidance is not required.
Backcourse Mode captures and tracks a localizer signal in the backcourse direction. The mode may be
selected by pressing the
BC
Key. Backcourse Mode is armed if the CDI is greater than one dot when the mode
is selected. If the CDI is less than one dot, the Backcourse Mode is automatically captured when the
BC
Key
is pressed. The flight director creates roll steering commands from the Selected Course and deviation when
in Backcourse Mode
