Cessna 172R, Operating Handbook

Page: 457 / 500

CESSNA
MODEL 172R
SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
15
-
FAA APPROVED
b. When equipped with HSI:
1) BARO Setting (if installed)
-
CHECK.
2) Course Bearing Pointer --
SET
to
desired course.
3) Heading Selector Knob
--
SET BUG
to
provide desired
intercept angle.
4)
APR Mode Selector Button
--
PRESS.
a) If the D-Bar is
greater
than
2 to 3 dots from
center,
I
the autopilot
will annunciate
APRARM; when
the
computed
capture
point is reached the ARM
annunciator will go out and the selected course will
be automatically captured and tracked.
b) If the D-Bar is less than 2 to 3 dots from
center,
the
|
HDG mode will disengage upon selecting APR mode;
the APR annunciator will illuminate and
the
capture/track sequence will automatically begin.
5) Airspeed
--
MAINTAIN 90 KIAS minimum during
coupled autopilot approaches (recommended).
8.
BACK COURSE (REV) APPROACH COUPLING (i.e., reverse
localizer):
a. When equipped with DG:
1)
BARO setting (if installed)
-
CHECK.
2)
OBS Knob
-
SELECT the localizer course
to
the front
course inbound
(as
a memory aid).
3) REV Mode Selector
Button --
PRESS.
4) Heading
Selector Knob -- ROTATE BUG
to the heading
corresponding
to
the localizer front course inbound.
Revision 1
S
15-29