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To select a VLOC frequency from the VOR or nearest VOR pages:
1. Select the desired page from the main pages. (See page references on the preceding
2. Press the small right knob (
) momentarily to activate the flashing cursor
3a. Rotate the large right knob (d
) to highlight the frequency for the desired VOR.
to place the frequency in the standby field of the VLOC window.
to activate the selected frequency.
6. Press the small right knob (
) to remove the flashing cursor.
When selecting a VOR or ILS approach, manual tuning of the VLOC receiver is
not required. Once the approach procedure is “Loaded” or “Activated”, the GNS
430 will automatically place the proper frequency in the standby field of the VLOC
window. If you wish to use this frequency, simply press
to activate the frequency.
Additional information on approach procedures is provided in Section 5, beginning
on page 66.
To select an approach and automatically tune the proper VLOC frequency:
1. Select the destination airport using the
key or as the last waypoint in the active
2. Press the
key to display the procedures page.
3b. Rotate the large right knob (
) to highlight “Select Approach?” and press
For duplex COM operations, the VLOC receiver may be auto-tuned
from the nearest flight service station page. See page 126 for more info.
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4. A window will appear listing the available procedures. Rotate the small right knob (
to highlight the desired procedure and press
. (When a direct-to destination is
selected, departures are offered for the nearest airport.)
5. A second window will appear listing available transitions. Rotate the small right knob
) to highlight the desired transition waypoint and press
. (The approach
“Vectors” option assumes you will receive vectors to the final course segment of the
approach and will provide navigation guidance to intercept this final course.)
6. Rotate the large right knob (
) to highlight “Load?” or “Activate?” and press
(“Load?” will add the procedure to the flight plan without immediately using it for naviga-
tion guidance. This allows you to continue navigating the original flight plan, but keeps
the procedure available on the active flight plan page for quick activation when needed.)
7. For VOR and ILS approaches, the standby field of the VLOC window is automatically
tuned to the proper frequency. To activate the frequency press
V. To display VLOC
course information on the external CDI (or HSI) press
and verify that “VLOC” is
displayed at the bottom left corner of the screen, directly above the
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
The GNS 430’s
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
key. When the external CDI (or HSI) if 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
to display “GPS” or “VLOC”, as desired.
The external CDI (or HSI) must be coupled to the VLOC receiver for
approaches which are not approved for GPS. See ILS example on page 86.
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AUX Pa ges
Section 2 introduced the GNS 430’s main page groups—NAV, WPT, AUX,
NRST—and described each page in the NAV group. The third page group (AUX)
allows you to change unit settings, customizing operation to your preferences. The
AUX pages also provide E6B functions—such as trip planning, fuel planning, densi-
ty altitude, true airspeed and winds aloft calculations.To quickly select an AUX page:
1. From any page, press and hold
to select the default NAV page. (You may skip this
step if you are already viewing any of the main pages. See page 27.)
2. Rotate the large right knob (
) to select the AUX page group. “AUX” will appear in the
lower right corner of the screen.
3. Rotate the small right knob (
) to select the desired AUX page.
AUX PAGESAUX Page Group
pages (see list
on pg. 119)
list on pg. 27)NAV
list on pg. 94)
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AUX PAGESFlight Planning
Flight Planning P
The flight planning pageprovides access (via “menu options”) to E6B functions
for fuel planning, trip planning, density altitude/true airspeed/winds aloft calcula-
tions and a “Crossfill” function to transfer flight plans/user waypoints to a second
GNS 430. When a menu option is selected, the corresponding page will appear
providing additional information and features.To select a menu option from the flight planning page:
1. Press the small right knob (
) momentarily, to activate the flashing cursor.
2. Rotate the large right knob (d
) to select the desired menu option, and press
The following menu options are available:
Fuel Planning— when equipped with fuel flow (FF) and/or fuel on board
(FOB) sensors, this option
displays current fuel conditions along the active
direct-to or flight plan. You may also manually enter fuel flow, ground speed (GS)
and (in some instances) fuel on board figures for planning purposes. Fuel plan-
ning figures can be displayed not only for the currenly active flight plan or
direct-to, but also point-to-point between two specified waypoints and for any
programmed flight plan.
Menu Options: to
with cursor and
in AUX group
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AUX PAGESFlight Planning
Trip Planning— allows the pilot to view desired track (DTK), distance (DIS),
estimated time en route (ETE), enroute safe altitude (ESA) and estimated time
of arrival (ETA) information for a direct-to, point-to-point between two specified
waypoints or for any programmed flight plan.
Density Alt / TAS / Winds— indicates the theoretical altitude at which your air-
craft will perform depending upon several environmental conditions, including
indicated altitude (IND ALT), barometric pressure (BARO) and total air temper-
ature (TAT; the temperature, including the heating effect of speed, read on a
standard outside temperature gauge). This menu option computes true airspeed
(TAS), based upon the factors above and the calibrated airspeed (CAS). Also, this
menu option determines winds aloft—the wind direction and speed—and a
head wind/tail wind component, based upon the calculated density altitude
(DEN ALT), true airspeed, aircraft heading (HDG) and ground speed.
Crossfill— allows the pilot to transfer the active flight plan, any stored flight
plan, a user waypoint or all user waypoints between two 400-Series GARMIN
units (GNS 430/GNC 420/GPS 400) in a dual-unit installation.
Scheduler— displays reminder messages (such as “Change oil”, “Switch fuel
tanks”, “Overhaul”, etc.). One-time, periodic, and event-based messages are
allowed. One-time messages will appear once the timer expires and will reap-
pear each time the GNS 430 is powered on, until the message is deleted.
Periodic messages will automatically reset to the original timer value, once the
message is displayed. Event-based messages do not use a timer, but rather a
specific date and time.
Point-to-point waypoints, flight plans and/or ground speed (default is
current GPS-calculated ground speed) entered on the fuel planning page
will automatically transfer to the trip planning page, and vice versa.
The "Flight Plan?" option allows you to select
the numbered flight plan for fuel planning.
The "Change Fields?" option allows you to
select fuel information for each field as
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