Roll (R) Axis Annunciator; Autopilot Engage/Disengage (Ap) Button; Heading (Hdg) Mode Selector Button - Cessna 172R Operating Handbook

SECTION SUPPLEMENTS
9
-
SUPPLEMENT 7

1. ROLL (R) AXIS ANNUNCIATOR

a failure in the roll axis and
disengages the autopilot.

AUTOPILOT ENGAGE/DISENGAGE (AP) BUTTON

2.
I
pushed* or pressed and held (approx 0.25 seconds)**,
engages autopilot if all preflight self
The autopilot will engage in the basic ROL mode which
functions as a wings leveler. The AP button can also be used
disengage the autopilot.
to
3. HEADING (HDG)
pushed, will select the Heading mode, which commands the
airplane to turn to and maintain
heading bug on the Directional Gyro or HSI (if installed). A
new heading may be selected
airplane turning
used to toggle between HDG and ROL modes. This button
can also be used
airplane serials 17280001 thru 17281118
Honeywell Service Bulletin KC140-M1, this button will also
engage the autopilot in HDG mode.
* Airplane serials 17280001 thru 17281118
Honeywell Service Bulletin KC140-M1.
** Airplane
Honeywell Service Bulletin
17281119 and on.
Figure 1. Bendix/King KAP 140 Autopilot, Operating Controls and
S7-8
FAA APPROVED
-
MODE SELECTOR BUTTON
the new heading. The button can also be
to
engage the autopilot in HDG mode. For
to
serials
17280001
Indicators (Sheet
When illuminated,
-
prevents engagement
test conditions are met.
the heading selected by the
any time and will result in the
at
thru 17281118
and airplane serials
KC140-M1,
2 of 3)
CESSNA
MODEL 172R
indicates
When
-
When
-
incorporating
not
incorporating
not
incorporating
Revision
or
4