Cessna 172R, Operating Handbook

Page: 431 / 500

CESSNA
MODEL 172R
SECTION 9
-
SUPPLEMENTS
SUPPLEMENT
15
-
FAA APPROVED
SUPPLEMENT
BENDIX/KING KAP
140
2
AXIS AUTOPILOT
|
SECTION
1
GENERAL
The KAP
140, 2
Axis Autopilot provides the pilot with the
following
features:
Vertical Speed mode (VS); Altitude hold
(ALT); Wing Level
(ROL); Heading select (HDG); Approach (APR); ILS coupling to
r
Localizer (LOC) and Glideslope (GS); and backcourse (REV) modes
of
operation. The optional
KAP 140, 2 Axis Autopilot with Altitude
Preselect
(if installed)
adds Altitude Alerter and Altitude Preselect
capabilities.
The KAP 140, 2 Axis Autopilot has an electric trim
system
which
provides autotrim during autopilot operation and
manual electric trim
(MET) for the pilot when the autopilot is
not
engaged. The electric
trim
system
is designed
to
be fail safe for any single in-flight trim
malfunction. Trim faults
are
visually and aurally annunciated.
A lockout device
prevents
autopilot or MET
engagement
until the
system
has
successfully passed preflight self
test.
Automatic
preflight self-test begins
with initial power application
to the
autopilot.
The following conditions will cause the Autopilot
to
disengage:
A. Electric Power
failure.
B. Internal Autopilot System failure.
Revision
1
S15-5