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4. As you approach the intermediate fix (CF25), a waypoint alert (“NEXT DTK 265°”) will appear.
Make any necessary course adjustments.
5. Within 2.0 nautical miles of the FAF (THERO), the GNS 430 will switch from terminal mode to
approach mode. (“APR” will appear in the lower left corner of the screen—replacing “TERM”.)
CDI scaling will be tightened from 1.0 to 0.3 nautical mile, full scale deflection.
6. As you approach the FAF, “NEXT DTK 265°” will appear in the lower right corner of the screen.
7. As you cross the FAF, the destination sequences to the MAP (MA25). With the CDI needle cen-
tered, fly toward the MAP, observing the altitude minimums dictated by the approach plate.
8. As you approach the MAP, a waypoint alert (“APPRCHING WPT”) will appear in the lower right
corner of the screen.
9. As you cross the MAP, “SUSP” will appear above the
key, indicating that automatic
sequencing of approach waypoints is suspended at the MAP. If a missed approach is required,
key to initiate the missed approach sequence, as outlined below.
TYPE 2: Course from fix to altitude
Course from fix to altitudelegs will show the specific target altitude on the
active flight plan and default NAV pages. The missed approach sequence for the
Palmdale VOR/DME RWY 25approach includes a course from fix to altitudeleg.
In this instance, the leg corresponds to the initial phase of the missed approach,
which reads “Climb to 5000’ outbound via PMD VOR R-282”.
1. After crossing the MAP, press the
key. The missed approach sequence is automatically
offered, starting with the course from fix to altitude leg. The “NEXT DTK 282°” alert appears in the
lower right corner of the screen. Follow the missed approach procedures, as published on your
approach plate, for proper climb and heading instructions.
2. Note that within a few seconds of pressing
to release suspend mode and start the
approach sequence, “SUSP” re-appears above the O
key as the GNS 430 returns to sus-
pend mode. This is normal when flying a course from fix to altitude leg and indicates that auto-
matic leg sequencing is suspended.
Course From Fix
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3. Fly the outbound course
keeping the CDI needle cen-
tered. The map page will
depict the flight path extend-
ing indefinitely from PMD
VOR. The distance (DIS) on
the default NAV, map and
active flight plan pages will
increase—and indicates the
distance back to PMD VOR.4. Upon reaching the desired
altitude (5000’), press
to return to automatic leg
sequencing. Confirm that
“SUSP” no longer appears
directly above the
5. An alert (“NEXT DTK 126°”)
will appear guiding you to the inbound course. The actual desired track (DTK) will depend on your
ground speed and distance from PMD VOR. Intercept and fly the inbound course, keeping the CDI
needle centered.6. As you approach PMD VOR (the missed approach holding point), an alert message in the lower
right hand corner of the screen will recommend the holding pattern entry procedure (“HOLD PAR-
ALLEL”). As you fly the holding pattern, a timer appears on the default NAV page. The timer
automatically resets on each outbound and inbound portion of the holding pattern.
7. Note that the GNS 430 again displays “SUSP” above the
key. Automatic waypoint
sequencing is suspended at the missed approach holding point. A waypoint alert (“APPRCHING
WPT”) appears in the lower right corner of the screen each time you approach PMD VOR in the
8. When leaving the holding pattern, press the
key to reactivate the approach or select a dif-
ferent approach, or press
to select another destination.
Palmdale (CA) AF Plant 42
VOR/DME or GPS Rwy 25
DO NOT USE FOR NAVIGATION
outbound via PMD
VOR R-282, then
turn to 7000’direct
Course From Fix
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TYPE 3: Course from fix to manual sequence
Course from fix to manual
sequencelegs will appear on the
active flight plan and map pages
with “man seq” in place of a way-
point identifier. An example of
this type of course leg appears in
the COASTAL ONE DEPAR-
TURE from Westfield,
Massachusetts (Barnes Muni).
The example leg corresponds to
the departure leg from Barnes
Municipal and appears as follows
on the active flight plan and
default NAV pages:
1. Select the departure (CSTL1) from
the procedures page. Then select
the departure runway (RW02, in this
example) and transition (GEDIC).
Refer to page 66 for instructions on
2. As you depart the airfield, “NEXT DTK 026°” appears in the lower right corner of the screen and
“SUSP” appears directly above the
key. You are now on the ‘course from fix to manual
sequence’ leg. The distance displayed on the active flight plan, default NAV and map pages is
FROM the waypoint fix (the departure runway, in this example).
3. Fly the outbound course keeping the CDI needle centered. Once you are cleared to sequence to
the next leg, press the
key. Confirm that “SUSP” no longer appears directly
key. An alert (“NEXT DTK 186°”) will appear in the lower right corner of the screen to guide
you to the next waypoint (HFD VOR). The actual desired track (DTK) will depend on your ground
speed and distance from HFD VOR.
key is pressed, the GNS 430 will automatically sequence to each waypoint along
the remainder of the departure route, including the selected transition.
DO NOT USE
FOR NAVIGATIONCOASTAL ONE DEPARTURE
,Fly assigned heading and altitude
for radar vectors to HFD
VOR. Expect clearance to
requested flight level 10
minutes after departure. From
over HFD VOR, proceed via the
HFD R-143 to Thumb Int,
then via the HTO R-010 to
Yoder Int, then via the CCC
R-057 to CCC VOR.
Then via transition
Course From Fix
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Precision approaches can be performed with the GNS 430's built-in VLOC
(VOR/localizer/glideslope) receivers. The GPS receiver can be used for guidance
prior to reaching the final approach fix, but once there, the proper frequency must
be selected on the VLOC window (left side of screen) and the CDI output set to
The GNS 430 can be set to automatically switch the external CDI output from
GPS to VLOC as you intercept the final approach course. When the ILS approach
is activated, the GNS 430 will automatically switch within 1.2 nautical miles left or
right of the final approach course. This switch can take place anywhere from 2.0 to
15.0 nautical miles from the FAF.
The illustration at left shows multiple locations along the approach path and
which CDI selection you can expect: GPS or VLOC. Within the area of the shaded
box, the automatic switch from GPS to VLOC should occur.
The automatic switch from GPS to VLOC is not immediate, but instead occurs
gradually to prevent abrupt CDI changes when coupled to an autopilot. The CDI
selection can also be changed manually by pressing the
key. Once the
switch from GPS to VLOC has occurred, either automatically or manually, it will
not automatically switch again until the approach is reactivated or another
approach is selected. To prevent automatic ILS CDI selection, choose the "Manual"
ILS CDI setting, as described on page 155. (The factory default setting is "Auto",
which enables the automatic switch to VLOC.)
If you attempt to intercept the approach course at a distance less than 2.0 nau-
tical miles from the FAF, the GNS 430 will not automatically switch the CDI to
VLOC. In this case, press the CDI key to manually switch from GPS to VLOC.
FA FVLOC VLOC GPS
within this area........
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Selecting an ILS
For this example, we’ll use a
flight from Laughlin Bullhead
(Arizona) International to
Flagstaff Pulliam (KFLG) and
select the ILS runway 21
approach. “SHUTR” intersec-
tion will be selected as the IAF,
which will include an outbound
leg and a procedure turn. Of
course, vectors-to-final could
also be selected, as previously
described for the non-precision
approach examples.1. Select Flagstaff Pulliam (KFLG) as
your destination, via the
as the last waypoint in a flight plan.
2. Press the
key and select the “ILS 21” approach using the steps outlined on page 66.
3. From the transitions window, select “SHUTR” as the IAF. Also, select “Load?” (or “Activate?”, if
already cleared for the approach).
4. A reminder message appears, indicating that GPS can only be used for approach monitoring. As
mentioned, you will need to use the VLOC receiver for this approach. Press ENT to acknowledge the
When you “Load?”(or “Activate?”) an ILS approach, the ILS frequency is automati-
cally placed in the standby field of the VLOC window. To use this frequency, simply
key to place it in the active frequency field.
DO NOT USE FOR
NAVIGATION Flagstaff (AZ) Pulliam
ILS DME Rwy 21
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