Garmin GNS 430AW, Pilot'S Manual & Reference

Page: 158 / 214

8 - VLOC RECEIVER
148
Auto-tuning / CDI Key
8. For precision approaches and some non-pre-
cision approaches, a reminder window will
appear indicating that GPS guidance on such
approaches is strictly for monitoring only—use
the VLOC receivers and external CDI (or HSI) for
primary navigation. To confirm this reminder,
highlight “Yes?” and press
ENT
.
CDI Key
The GNS 430W’s CDI key is used to couple the
GPS or VLOC receiver to the external CDI (or HSI).
When the external CDI (or HSI) is being driven by
the GPS receiver, “GPS” will appear at the bottom left
corner of the page, directly above the
CDI key. When
the external CDI (or HSI) is being driven by the VLOC
receiver, “VLOC” will appear instead.
To couple the external CDI (or HSI) to the GPS
receiver or VLOC receiver, press the CDI key to
display “GPS” or “VLOC”, as desired.
NOTE: The external CDI (or HSI) must be coupled
to the VLOC receiver for approaches which are
not approved for GPS. See the ILS example in the
Procedures section.
GNS 430W Only