Textron Cessna 172R - Page 436

SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
15
-
FAA
APPROVED
CESSNA
MODEL
172R
9.
VERTICAL
SPEED
(UP/DN)
MODE
BUTTONS
--
The
action
of
these
buttons
depends
on
the vertical
mode
present
when
pressed.
If
VS
mode is
active
(AP
plus
any
lateral
mode)
and
the UP
button
is
pressed,
the
autopilot
will
modify
the
displayed
VS
command
(FPM)
in
the
up
direction.
Single
momentary
cycles
on
either the UP
or
DN
button
will
increment
the
VS
command
by
100
FPM
per
cycle.
When
either
button
is
continuously
held
in,
it
will
modify
the
vertical
speed
command
by
300
fpm
per
second.
If
ALT
mode is
active,
pressing
the
UP/DN
buttons
will
modify
the
captured
altitude
by
20
feet
per
cycle,
or
if
held
continuously
will
command the
airplane
up
or
down
at
the
rate
of
500
FPM,
synchronizing
the
ALT
reference
to
the
actual
airplane
altitude
upon
button
release.
10.
AUTO
PILOT
CIRCUIT
BREAKER
-
A
5-amp
pull-off
circuit
breaker
supplying
28
VDC
to
the
KAP
140
system.
11
.
WARN
C/B
-
Power
to
the
autopilot
disconnect
horn and
the
airplane's
annunciator
panel
(PITCH
TRIM).
12.
AUTOPILOT
DISCONNECT
(A/P
DISC/TRIM
INT)
SWITCH
-
When
depressed
will
disengage
the
autopilot
and
interrupt
manual electric
trim
(MET)
power.
An
autopilot
disconnect
will
be annunciated
by
a
continuous
2
second
tone
accompanied
by
flashing
"AP"
annunciations
on
the
autopilot
computer
display.
13.
MANUAL
ELECTRIC
TRIM
(MET)
SWITCHES
-
When
both
switches
are
pressed
in
the
same
direction the trim
system
will
provide pitch
trim
in
the selected
direction. Use
of
manual
electric
trim
during
autopilot operation
will
disengage
the
autopilot.
Figure
2.
Bendix/King
2-Axis
KAP
140
Autopilot,
Operating
Controls
and Indicators
(Sheet 3)
S15-10
Revision
2
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