Cessna 172R Pilot Operating Handbook page 313

HL
'G
REV
ROLL SERVO ANNUNCIATOR -- When illuminated, indicates
failure of the
roll
servo and prevents engagement of the
autopilot.
AUTOPILOT ENGAGE/DISENGAGE (AP) BUTTON -- When
pushed, engages autopilot if all logic conditions are met. The
autopilot will engage in the basic ROL mode which functions
as a wings leveler.
Autopilot will disengage if pushed a
second time.
HEADING (HDG) MODE SELECTOR BUTTON
-- When
pushed, will select the Heading mode, which commands the
airplane to turn to and maintain the heading selected by the
heading bug on the Directional Gyro. A new heading
may be
selected at any time and will result in the airplane turning to
the new heading. Button can also be used to toggle
between
HDG and ROL modes
NAVIGATION (NAV) MODE SELECTOR BUTTON
-- When
pushed, will select the Navigation mode. The mode provides
automatic beam capture and tracking of VOR, LOC, or GPS
signals as selected for presentation on the #1 CDI.
APPROACH (APR) MODE SELECTOR BUTTON -- When
pushed, will select the Approach mode. This mode provides
automatic beam capture and tracking of VOR, LOG, or GPS
signals as selected for presentation on the #1 CDI.
The
tracking sensitivity of the APR mode is greater than
the
sensitivity in the NAV mode.
Figure 1. Bendix/King KAP 140 Autopilot, Operating Controls and
Indicators (Sheet 2 of 3)
11942/X4716
KAP 140
Dec 2/96
37-5
CESSNA
SECTION 9 - SUPPLEMENTS
MODEL 172R
SUPPLEMENT 7- FAA APPROVED
2
3
4
5
6
AP
1.
2.
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