Cessna 172SPHUSR05 Pilot Operating Handbook page 359

CESSNA
MODEL 172S
c. Heading Selector Knob --
course.
When NAV is selected, the autopilot will flash HOG for 5
seconds to remind the pilot to reset the HOG bug to the
OBS course. If HOG mode was in use at the time of NAV
button selection, a 45° intercept angle will then be
automatically established based on the position of the bug.
All angle intercepts compatible with radar vectors may be
accomplished by selecting ROL mode PRIOR to pressin g
the NAV button. The HOG bug must still be positioned to
agree with the OBS course to provide course datum to the
autopilot when using a DG (Directional Gyro).
1) If the D-Bar is greater than 2 to 3 dots, the autopilot will
annunciate
reached, the
course will be automatically captured and tracked.
2) If the D-Bar is less than 2 to 3 dots, the HOG mode will
disengage
annunciator will then illuminate and the captureltrack
sequence will automatically begin.
2. When equipped with HSI:
a. Course Bearing Pointer
b. Heading Selector Knob - -
intercept angle and engage HOG mode.
c. Mode Selector Button
NAV
1) If the D-Bar is greater than 2 to 3 dots, the autopilot will
annunciate
reached the
course will be automatically captured and tracked.
May 30/00
SUPPLEMENT 7
ROTATE BUG
NOTE
NOTE
When the computed capture point is
NAV AR M.
annunciator will go out and the selected
ARM
upon selecting
to desired course.
SET
-
SET BUG
-
PRESS.
-
When the computed capture point is
NAVA RM '
annunciator will go out and the selected
ARM
SECTION 9 SUPPLEMENTS
-
FAA APPROVED
-
to agree with
NAV mode.
to provide desired
OBS
The
NAV
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