Textron Cessna 172R - Page 439

CESSNA
MODEL
172R
SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
15
-
FAA
APPROVED
3.
ALTITUDE
ARM
(ARM)
BUTTON
-
When
pushed,
will
toggle
altitude
arming
on
or
off.
When
ALT
ARM
is
annunciated,
the
autopilot
will
capture
the
altitude
alerter
displayed
altitude
(provided
the
aircraft
is
climbing
or
descending
in
VS
to
the
displayed
altitude).
ALT
hold
arming
when
the
autopilot
is
engaged
is automatic
upon
altitude alerter altitude
selection
via the
rotary
knobs. Note
that the
alerter
functions
are
independent
of
the
arming
process
thus
providing
full
time
alerting,
even
when the
autopilot
is
disengaged.
4.
ALTITUDE
ALERTERWERTICAL
SPEED/BARO
SETTING
DISPLAY
--
Normally
displays
the
altitude
alerter
selected
altitude.
If
the
UP
or
DN
button
is
pushed
while
in
VS
hold,
the
display
changes
to
the
command
reference for
the
VS
mode
in FPM
for
3
seconds.
If
the
BARO
button is
pushed,
the
display
changes
to
the
autopilot
baro
setting
in
either
IN
HG
or
HPA
for
3
seconds.
NOTE
This
display
may
be dashed
for
up
to
3
minutes
on
start
up
if
a
blind encoder
is
installed
which
requires
a
warm-up
period.
5.
ALTITUDE
ALERT
(ALERT)
ANNUNCIATION
-
Illuminates
continuously
in
the
region
of
from
200
to
1
000
feet
from
the
selected
altitude
if
the
airplane
was
previously
outside
of
this
region.
Flashes
(1)
for
two
seconds
the
first
time
the
airplane
crossed the selected
altitude and
(2)
continuously
in
the
200
to
1000
feet
region
if
the
airplane
was
previously
inside
of
this
region
(i.e.
at
the selected
altitude).
Associated
with
the visual
alerting
is
an
aural alert
(5
short
tones)
which
occurs
1000
feet from
the selected
altitude
upon
approaching
the altitude
and
200
feet
from
the
selected
altitude
on
leaving
the
altitude.
Figure
3.
Bendix/King
2-Axis
KAP
140
Autopilot
with
Altitude
Preselect,
Operating
Controls
and
Indicators
(Sheet 2)
Revision
1
S15-13
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