AeroNav 900/880 Series Pilot’s Guide
89000039-010
6-6 Navigation Rev 1 May 2019
of the Nav Source knob. The table below describes all possible
nav source states:
GPS
Or...
LPV
LNAV/VNAV
LP+V, LP
LNAV
LNAV+V
GPS is the active state (green), and all
external deviation data being transmitted by
the AeroNav is in reference to the active GPS
leg.
Note that if no GPS leg is active or if no GPS
lock, the nav mode will be displayed in
yellow.
If performing an RNAV approach, “GPS” gets
replaced with the approach type when the leg
to the FAF becomes active and either the
approach is VTF or the course to the FAF is
within 45° of the final approach course.
GPS LPV
Or...
LNAV/VNAV
LP+V
LP
LNAV
LNAV+V
Basic GPS is the active state (green), and the
approach type is armed (blue).
GPS is the active state (green), and VLOC is
armed (blue).
If the GPS flight plan contains a VHF-based
procedure or leg (e.g. localizer final), then the
nav mode will automatically transition from
GPS to VLOC when the capture criteria have
been met. While GPS is active, all external
deviation data being transmitted by the
AeroNav is in reference to the active GPS
leg. That transitions to VHF deviation data
when the switch to VLOC is made.
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