Cessna SkyHawk SP 172S NAV III 2005 Pilot Operating Handbook page 341

SECTION 9 - SUPPLEMENTS
SUPPLEMENT 3
CESSNA
MODEL 172S NAV III
GENERAL
(Continued)
14. COURSE SELECT (CRS) KNOB - Selects the desired
magnetic course to be tracked by the autopilot. (Note: The
HOG bug must also be positioned to the proper course to
capture and track the selected radial or desired track).
15. HEADING SELECT KNOB (HOG) - Positions the heading
pointer ("bug") on the HSI compass card. Note that the
position of the heading bug also provides heading datum to
the autopilot when armed for course capture is in NAV,
APR, or REV (BC) modes. This is in addition to its use in
the HOG mode.
16. PITCH TRIM (PT) Annunciator - Indicates the direction of
pitch trim motion. The annunciation will flash if auto trim
has not satisfied the request for trim for a period of 10
seconds. A solid without an arrowhead is an indication
of a pitch trim fault. Refer to the EMERGENCY
PROCEDURES for proper response to a pitch trim fault.
17. PITCH TRIM Annunciation - Displayed in the PFO,
Illuminates whenever the automated preflight self test
detects a pitch trim fault or the continuous monitoring
system detects a pitch trim fault in flight. Refer to the
EMERGENCY PROCEDURES for proper response to a
pitch trim fault.
18. AUTOPILOT ENGAGE
I
AP
I
Annunciation - Comes on
whenever the autopilot is engaged. Flashes during pilot
initiated or automatic disengagement.
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S3-12 U.S.
FAA APPROVED
172SPHAUS-S3-00