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NAVIGATION (NAV) MODE
USING THE OPTIONAL KI
525A PNI NOR. RNAV)
In the navigation (NAV) mode, the
autopilot intercepts and tracks VOR and
RNAV courses.
To operate in the NAV mode:
VOR (or VORTAC) station. For RNAV,
set in the waypoint distance and VOR-
TAC radial.
2. Set the desired course on the KI 525A
PNI.
3. Establish the desired intercept angle
by setting the heading "bug" on the
intercept heading and activate HDG
mode. ('HDG" light will illuminate.)
The KAP 150 can perform all-angle
intercepts when using the KI 525A
PNI.
4. Depress the NAV button on the KC
191. (NAV light will flash to signify that
NAV mode is armed.)
NOTE: If the NAV mode is selected with the
aircraft level within
+4
degrees and within
2-3 dots of course deviation, NAV arm
mode will be bypassed and the NAV mode
will engage directly.
1. Tune the frequency for the selected
5.
The autopilot will fly the selected
heading until entering the capture
zone,* then turn to intercept the
selected course. The HDG light will
go off and the NAV light will illuminate
steadily as the NAV mode goes from
arm to engage.
6. The autopilot will bank as necessary to
maintain course.
*The capture point will vary depending on
the angle of intercept and the rate
of
change of VOR/RNAV radials.
(See page 60/61 for illustration)
NOTE: You should consider using HDG
select mode just prior to VOR station pas-
sage. If the autopilot is engaged in NAV
mode it may cause erratic maneuvers while
following a rapidly changing course devia-
tion needle as the aircraft flies in the cone
of confusion.
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