Garmin GNS 430 - Manual (Page 97)

89
PROCEDURES
ILS Approach
Example
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8. Turn right to a heading of 075° to initiate the
procedure turn. The GNS 430 will not guide you
through the turn. (The procedure turn is displayed
on the map page and indicated as the active leg
on the default NAV and active flight plan pages.)
The external CDI needle will start moving to the
left.
9. After approximately one minute, make a 180°
left turn to a heading of 255° to intercept the ILS.
The GNS 430 will sequence to the inbound leg
and “NEXT DTK 210°” will appear in the lower
right corner of the screen. CDI coupling will
automatically switch from the “GPS” receiver to
the “VLOC” receiver as you complete the inbound
turn. (If the ILS frequency has not been activated,
per step #4, this automatic CDI switch will not
occur.)
10. As the CDI needle starts to center, make a left
turn to 210° to track the ILS approach course.
11. As you approach the FAF (SHUTR), “0.30nm” will appear in the lower left corner of the screen —indicat-
ing a CDI scale transition from 1.0 to 0.3 nautical miles, full scale deflection. (This scale transition applies
only to the default NAV page’s on-screen CDI, since the external CDI or HSI is now coupled to the VLOC
receiver. GPS approach mode will NOT be activated for precision approaches, since the VLOC receiver
MUST be used for primary navigation.)
NOTE
From this point on, primary navigation is provided by the VLOC
receiver. You may continue to use the GPS receiver for supplemental
navigation guidance only. ALSO, when using an external CDI (not an
HSI), expect reverse sensing when flying outbound on the approach
course or when flying a back course approach.
DO NOT USE FOR
NAVIGATION
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