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8 - VLOC RECEIVER
152
190-00356-00 Rev E
Auto-tuning / CDI Key
8. For precision approaches and some non-
precision 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
GPSorVLOCreceivertotheexternalCDI(orHSI).
WhentheexternalCDI(orHSI)isbeingdrivenby
the GPS receiver, “GPS” will appear at the bottom left
corner of the page, directly above the CDI key. When
theexternalCDI(orHSI)isbeingdrivenbytheVLOC
receiver,“VLOC”willappearinstead.
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.
NOTE: GPS level of service annunciations (LPV,
ENR, etc.) are not applicable to the external CDI
(or HSI) when VLOC is active.
GNS 430W Only