Textron Cessna 172S Skyhawk SP, Information Manual

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SECTION 9 - SUPPLEMENTS
SUPPLEMENT 7 - FAA APPROVED
NOTE
CESSNA
MODEL 172S
All angle intercepts compatible with radar vectors may be
accomplished. by selecting ROL mode PRIOR to pressing
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).
I
1) If the COl needle is greater than 2 to 3 dots from center,
the autopilot will annunciate NAVARM' When the computed
capture point is reached, the
ARM
annunciator will go. out
and the selected course will be automatically captured and
tracked.
I '2) If the COl needle is less than2 to 3 dots from center, the
HOG mode will disengage upon'selecting NAVmbde. The
NAV annunciator will then illuminate and the capture/track
sequence will automatically begin. . .
2. When equipped with HSI:
,
.
-
~
.
a. Course Bearing Pointer -
SET
to desired course.
b. Heading Selector Knob .--
SET BUG
to provide desired
intercept angle and engage HOG mode.
"
c. NAV Mode Selector Button --
PRESS.
I
I
1.
',:J~
f
1) If the Course Deviation Bar (D-Bar) is greater than 2 to 3
. dots from .center, the autopilot will annunciate NAVARM.
When the computed capture point is reached the
ARM
annunciator will go out and the selected course will be
automatically captured and tracked.
2) If the D-Bar is less tha'n 2 'to 3 dots from center, the HOG
mode will disengage upon selecting NAV mode; the NAV
'. annunciator will illuminate and the capture/track se{Juence
will automatically begin.' . . . . .
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IS7-16
Revision 2