Textron Cessna 172R - Page 351

CESSNA
MODEL
172R
SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
1
-
FAA
APPROVED
1.
OPERATING
COMM
FREQUENCY
DISPLAY
-
Displays
COMM
ACTIVE
and
COMM
STANDBY
frequencies
with
a
"T"
between
them
to
indicate
TRANSMIT
and
an
"R"
to
indicate
RECEIVE
modes
of
operation.
2.
OPERATING
NAV
FREQUENCY
DISPLAY
-
The
right
portion
of
the
display
is
allocated
to
NAV
receiver
ACTIVE
and
STANDBY
information.
The
frequency
channeling
is similar
to
the
COMM
when
operating
in
the
frequency
mode. The
NAV
ACTIVE
and
STANDBY
frequencies
are
stored
in
the
memory
on
power
down and
return
on
power
up.
3.
NAV
STANDBY/OBS/Bearing/Radial/Timer
Display
-
The
right
side
of
the
NAV
display
is controlled
by
the
MODE
SELECTOR
BUTTON
(see
#7
below).
With
an
active
VOR
frequency,
this
portion
of
the
display
shows the
STANDBY
frequency,
OBS
setting
for
the internal
CDI,
the
bearing
to
the
VOR
station,
radial
from
the
VOR
station,
or
a
count-up/count¬
down
timer.
With
an
active
localizer
frequency,
this
portion
of
the
display
shows
the
standby
frequency,
the letters
"LOC",
or
count-up/count-down
timer.
4.
NAV
FREQUENCY
SELECTOR
KNOB
(SMALL)
-
Operates
in
50
kHz
steps.
The
NAV
receiver’s
lower and
upper
frequency
limits
are
108.00
MHz
and
117.95
MHz.
Exceeding
the
upper
limit
of
frequency
band
will
automatically
return
to
the
lower
limit
and
vice
versa.
A
clockwise
rotation
will
increase
(inc)
the
previous
frequency
while
a
counterclockwise
rotation
will
decrease
(dec)
the
previous
frequency.
5.
NAV
FREQUENCY
SELECTOR
KNOB
(LARGE)
-
Operates
in
1
MHz
steps.
The
frequency
inc/dec
operates
the
STANDBY
frequency
display.
A
clockwise
rotation
will
increase the
previous
frequency
while
a
counterclockwise
rotation
will
decrease
the
previous
frequency.
Exceeding
the
upper
limit
of
the
frequency
band
will
automatically
return to
the lower
limit and vice
versa.
Figure
1.
Bendix/King
KX
155A
VHF
NAV/COMM
with
Kl
208
or
Kl
209A
Indicator Head
(Sheet
3
of
7)
Dec
2/96
S1-7
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