Textron Cessna 172R - Page 434

SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
15
-
FAA
APPROVED
CESSNA
MODEL
172R
KAP
1
40
WITHOUT
ALTITUDE
PRESELECT
1.
PITCH AXIS
(P)
ANNUNCIATOR
-
When
illuminated,
indicates
failure of
pitch
axis and
will
either
disengage
the
autopilot
or
not
allow
engagement
of
the
pitch
axis.
In
turbulent
air,
will
illuminate
during
abnormal
vertical/accelerations.
2.
AUTOPILOT
ENGAGE/DISENGAGE
(AP)
BUTTON
-
When
pushed*,
or
pressed
and held
(approx.
0.25
seconds)**,
engages
autopilot
if
all
preflight
self-test
conditions
are
met.
The
autopilot
will
engage
in
the
basic roll
(ROL)
mode which
—
functions
as a
wing
leveler and the
pitch
axis
vertical
speed
(VS)
mode.
The
commanded vertical
speed
will
be
displayed
in
the
upper
right
corner
of
autopilot
display
area.
The
captured
VS
will
be the vertical
speed
present
at
the
moment
the
AP
button
is
pressed.
The button
may
also be used
to
disengage
the
autopilot.
3.
ROLL
AXIS
(R)
ANNUNCIATOR
--
When
illuminated,
indicates
failure of
the
roll
axis
and
disengages
the
autopilot.
|*
Airplane
serials
17280831
thru
17281118
not
incorporating
Honeywell
Service
Bulletin
KC140-M1.
I**
Airplane
serials
17280831
thru
17281118
incorporating
Honeywell
Service
Bulletin
KC140-M1,
and
airplane
serials
17281119
and
on.
Figure
2.
Bendix/King
2-Axis
KAP
140
Autopilot,
Operating
Controls
and Indicators
(Sheet
1
of
4)
S15-8
Revision
2
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