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5 - PROCEDURES
104
190-00356-00 Rev E
ILS Approach
430W Only
1.   Select  the  departure  (CSTL1)  from  the  pro-
cedures  page. Then  select  the  departure 
runway (RW02, in this example) and transition 
(GEDIC). 
2.   As you depart the airfield, “NEXT DTK 026°” 
appears in the lower right corner of the screen 
and “SUSP” appears directly above the OBS 
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 OBS key. Confirm that 
“SUSP” no longer appears directly above the 
OBS  key. An  alert  (“NEXT  DTK  183°”)  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. 
4.   Once the OBS key is pressed, the 400W-series 
unit  will  automatically  sequence  to  each 
waypoint along the remainder of the departure 
route, including the selected transition. 
ILS Approaches
Precision approaches can be performed with the 
GNS 430W’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 “VLOC”.
The GNS 430W can be set to automatically switch 
the external CDI output from GPS to VLOC as you
intercept the final approach course (if used with a 
KAP140/KFC225 autopilot, you will need to manu-
ally enable outputs). See instructions at the end of this 
section. When the ILS approach is activated, the GNS 
430W will automatically switch within 1.2 NM left or 
right of the final approach course. This switch can take 
place anywhere from 2.0 to 15.0 NM from the FAF.  
The illustration at right 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. 
 
NOTE:  If you attempt to intercept the approach 
course at a distance less than 2.0 NM from the 
FAF, the GNS 430W will not automatically switch 
the CDI to VLOC. In this case, press the CDI key to 
manually switch from GPS to VLOC.