Garmin G1000 NXi Pilot's Manual page 374

AUTOMATIC FLIGHT CONTROL SYSTEM
APPROACH MODES (GPS, VAPP, LOC)
The selected navigation receiver must have a valid VOR or LOC signal or active GPS course for the
NOTE:
flight director to enter Approach Mode.
Approach Mode is activated when the APR Key is pressed. Approach Mode acquires and tracks the
selected navigation source (GPS, VOR, or LOC), depending on loaded approach. This mode uses the selected
navigation receiver deviation and desired course inputs to fly the approach. Pressing the APR Key when the
CDI is greater than one dot arms the selected approach mode (annunciated in white to the left of the active
lateral mode). If the CDI is less the 1 dot, the LOC is automatically captured when the APR Key is pressed.
VOR Approach Mode (VAPP) provides greater sensitivity for signal tracking than VOR Navigation Mode.
Selecting VOR Approach Mode:
1) Ensure a valid VOR frequency is tuned
2) Ensure that VOR is the selected navigation source (use the CDI Softkey to cycle through navigation sources if
necessary).
3) Press the APR Key.
When GPS Approach Mode is armed, Glidepath Mode is also armed.
Selecting GPS Approach Mode:
1) Ensure a GPS approach is loaded into the active flight plan. The active waypoint must be part of the flight plan
(cannot be a direct-to a waypoint not in the flight plan).
2) Ensure that GPS is the selected navigation source (use the CDI Softkey to cycle through navigation sources if
necessary).
3) Press the APR Key.
LOC Approach Mode allows the autopilot to fly a LOC/ILS approach with a glideslope. When LOC
Approach Mode is armed, Glideslope Mode is also armed automatically. LOC captures are inhibited if the
difference between aircraft heading and localizer course exceeds 105°.
Selecting LOC Approach Mode:
1) Ensure a valid localizer frequency is tuned.
2) Ensure that LOC is the selected navigation source (use the CDI Softkey to cycle through navigation sources if
necessary).
3) Press the APR Key.
Or :
360
Figure 7-19 GPS Approach Mode Armed
Garmin G1000 NXi Pilot's Guide for the Cessna Nav III
190-02177-00 Rev. A