Approaches With Lateral + Vertical Guidance - Garmin G3X Pilot's Manual

3) G3X: From the PFD or PFD Page, press the HDG/ROLL Softkey to access
the autopilot lateral modes and then press the AP NAV Softkey. If the
aircraft heading is within 75˚ of the localizer backcourse then BC Mode will
be armed. If the aircraft heading is within 105˚ of the localizer front course,
LOC Mode will be armed.
If BC mode is armed and the heading exceeds 75˚ of the localizer backcourse for 20
seconds, the autopilot will switch from BC to LOC mode. If LOC mode is armed and the
heading exceeds 105˚ of the localizer front course for 20 seconds, the autopilot will switch
from LOC mode to BC mode. Once BC mode or LOC mode become active, the autopilot will
not switch between LOC and BC modes regardless of the heading

APPROACHES WITH LATERAL + VERTICAL GUIDANCE

Press the AP APPR Softkey to arm/activate both lateral and vertical modes for
approach. When Glidepath (GP) Mode is armed for a GPS approach with vertical
guidance, GPS Mode is automatically armed. When Glideslope (GS) Mode armed for
an ILS approach, LOC Mode is automatically armed. Press the AP APPR Softkey
when the CDI is greater than one dot to arm the selected modes (annunciated in
white). Press the AP APPR Softkey when the CDI deviation is less than one dot to
activate, capture and track the selected navigation source.
Example Control
LPV,
AP
LNAV/
APPR
VNAV,
Softkey
LNAV+V
AP
LOC, ILS,
APPR
LDA, SDF
Softkey
190-01115-00 Rev. J
Modes Annunciation
Lateral:
GPS
GPS
Vertical:
GP
Glidepath
Lateral:
LOC
Localizer
Vertical:
Glideslope
Lateral + Vertical Approaches
Garmin G3X Pilot's Guide
Integrated Autopilot
.
Captures and tracks the lateral
portion of a GPS approach
Captures and tracks a WAAS
approach glidepath
Captures and tracks the
localizer
Captures and tracks the
GS
glideslope
Description
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