Garmin GNS 430 - Manual (Page 85)

77
2. Press the P key and select the “VOR 22”
approach using the steps outlined on page 64.
From the transitions window, select “D258G” as
the IAF. Also, select “Load?” (or “Activate?”, if
already cleared for the approach).
3. Within 30 nautical miles of KTOP, the GNS 430
will switch from enroute mode to terminal mode
and the CDI scale will transition from 5.0 to 1.0
nautical miles, full scale deflection.
4. If you haven’t already activated the approach (in
step #2 above), be sure to do so when cleared for
the approach. See page 69, step #4 for a descrip-
tion of this operation.
5. As you approach the IAF (D258G), a waypoint
alert (“NEXT DTK 353°”) will appear in the lower
right corner of the screen. As the distance (DIS) to
the IAF approaches zero, the alert is replaced by a
turn advisory (“TURN TO 353°”).
6. Follow the arc, keeping the CDI needle cen-
tered. When using an autopilot, the course select
on the CDI (or HSI) must be periodically updated
with the desired track (DTK) to ensure proper tracking through the arc. Whenever the course select
setting and desired track differ by more than 10°, a “Set course to # # # °” message will appear on the
message page.
7. The next point in the approach is an intermediate fix, labeled “D025G”. As you approach this intermedi-
ate fix, a waypoint alert (“NEXT DTK 205°”) will appear in the lower right corner of the screen. As the
distance to this fix approaches zero, the alert is replaced by a turn advisory (“TURN TO 205°”). Dial this
course into the CDI (or HSI) using the OBS knob and initiate a standard rate turn to this course heading.
8. At 2.0 nautical miles from the FAF (TOP VOR), the GNS 430 will switch from terminal mode to approach
mode. CDI scaling will be tightened from 1.0 to 0.3 nautical mile, full scale deflection.
5
PROCEDURES
DME Arc
Approach Example
t
r
q
DO NOT USE FOR
NAVIGATION
p
q
s
r
t
u
Billard Muni (Topeka, KS)
VOR or GPS Rwy 22
190-00140-00.indd 77 5/7/2003, 5:17:14 PM