Garmin GNC 420AW GPS Receiver User Manual


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5 - PROCEDURES
105
190-00356-00 Rev E
ILS Approach
430W Only
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 CDI key. Once the switch from GPS to
VLOChasoccurred,eitherautomaticallyormanu-
ally, 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.(Thefactory
default setting is “Auto”, which enables the automatic
switchtoVLOC.)
2
NM
15
NM
1.2
NM
1.2
NM
MANUAL
FAF
VLOC
VLOC
GPS
GPS
Auto Switch to VLOC
within this area
Selecting an ILS Approach
For this example, we’ll use a flight from Laughlin
Bullhead (Arizona) International to Flagstaff Pul-
liam (KFLG) and select the ILS runway 21 approach.
“SHUTR” intersection 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 des-
tination, via the direct-to key or as the last
waypoint in a flight plan.
2. Press the PROC key and select the “ILS 21”
approach.
3. From the transitions window, select “SHUTR”
as the IAF. Also, select “Load?” (or “Activate?”,
if already cleared for the approach).
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