Back Course Mode From Hdg Mode - Honeywell KAP 140 Installation Manual

Back Course (REV) Mode from HDG Mode (45° Intercept)
The back course (REV) mode allows the autopilot to
intercept and track a localizer back course.
To arm REV mode (with the KAP 140 currently in the
HDG mode):
1. Select the desired frequency for LOC/ILS.
2. OBS Knob - SELECT front course inbound heading.
3. REV Mode Selector Button - PRESS. Note REV
ARM annunciated
.
The autopilot will flash HDG for 5 seconds to remind
the pilot to reset the HDG bug to the front course
inbound heading. Check the heading displayed on the
DG against the magnetic compass and reset if
necessary.
4. Heading Selector Knob - ROTATE BUG to agree
with the FRONT COURSE inbound heading.
When HDG stops flashing, if CDI needle is to the left,
aircraft will turn to an intercept course 45º to the right of
the back course; and 45º to the left is CDI needle is to
the right.
5. If the Course Deviation Bar is greater than 2 to 3
dots the autopilot will annunciate REV ARM; when the
computed capture point is reached the ARM
annunciator will go out and the back course will be
automatically captured and tracked. If the D-Bar is less
than 2 to 3 dots: the HDG mode will disengage upon
selecting REV mode; the REV annunciator will
illuminate and the capture/track sequence will
automatically begin.
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