Installation manual

5-13 Navigation
APPROACH PROCEDURES
Ensure the approach has been entered into the FMS flight plan,
and that it is currently active in the IFD.
Automatic mode switching (e.g. GPS  VLOC transition)
including automatically setting the inbound course, will occur if
the capture criteria defined above are met and the primary nav
frequency can be auto-identified. If auto tuning has not been
enabled on the setup pages, or a station cannot be identified,
automatic mode switching will not occur.
TIPS AND TECHNIQUES
Exception to Automatic Nav Mode Switching
If VLOC mode had been previously manually
selected to be the nav mode (e.g. cross-tuning a
VOR) and then an approach is activated in the flight
plan that would have normally resulted in a GPS 
VLOC nav mode indication, the nav mode will NOT
toggle to GPS  VLOC. Instead, it will stay at
VLOC since it is assumed the pilot intended to keep
using the previous function. Likewise, the
approach nav frequency will be inserted into the #1
standby nav frequency slot but not the active nav
frequency position. Both the nav mode transition
and the swapping of the nav frequencies will have to
be manually performed by the pilot.
With the proper inbound course set, including on localizer or ILS
approaches where the course pointer is just for reference, the
course and glide slope deviation data will be transmitted as
appropriate from the IFD for display on compatible cockpit third-
party devices such as CDIs, HSIs, EFISs, etc. In the
ILS/Localizer case, the CDI deflection will be driven by the
localizer signal itself, regardless of the course setting.