Garmin GNS 430AW, Pilot'S Manual & Reference

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5 - PROCEDURES
110
Additional Approach Info
sequencing of approach waypoints is suspended on
the current leg and normally appears at holding
patterns and upon crossing the missed approach
point (MAP).
• For roll steering autopilots: roll steering is ter-
minated when approach mode is selected on the
autopilot and is available once the missed approach
is initiated.
• Auto-Suspend is active for Vectors To Final (VTF)
until on the “TO” side of the FAF and the aircraft
ground track is within a 45° course of the published
in bound course. At this point, it will automatically
extinguish.
This is a new feature with the 400W-
series.
• For all approaches and departures, make sure to
recheck the runway, transition, and all waypoints.
If ATC directs you to make a change, recheck each
element again.
Points to Remember for Localizer or VOR-
based Approaches
• The default factory setting allows the CDI output to
automatically switch from the GPS receiver to the
LOC receiver. This may be changed to manual in
some installations. If the “ILS CDI Selection” setting
is changed to “Manual”,
you must determine when
to select “GPS” or “VLOC” guidance during the
approach. Remember, “VLOC” is required for the
final course segment from Final Approach Fix (FAF)
to MAP.
NOTE: Installations with certain autopilots, such
as the KAP 140 and KFC225, do not allow auto-
matic ILS CDI switching.
• If the CDI output has not automatically switched
from GPS to ILS upon reaching the FAF, you must
manually switch to the VLOC receiver by pressing
the
CDI key. Verify that “VLOC” is displayed directly
above to the CDI key.
• Automatic switching of CDI output is available
for ILS, localizer, SDF and LDA approaches. Auto-
matic CDI switching is
not
available for backcourse
approaches or VOR approaches.
• When flying an approach with the autopilot coupled,
you must monitor system functions at all times and
verify that the autopilot and external CDI (or HSI)
switch to the VLOC receiver with sufficient time to
capture and track the approach course. Switching
to “VLOC” late in the approach may not provide the
autopilot enough time to respond and intercept the
approach course prior to the FAF (depending upon
the performance characteristics of your autopilot and
aircraft). In such instances, you should manually fly
the approach or refer to the documentation provided
with your autopilot.
• When an ILS or VOR approach is first selected or
executed, the frequency is automatically checked.
If the frequency is correct, you will not receive a
message regarding the frequency. If the frequency
is incorrect, you will receive a message and you
must place the ILS or VLOC frequency in the active
frequency field.