Interior Lighting - Cessna Skyhawk 172N 1980 Information Manual

SECTION
7
AIRPLANE & SYSTEMS DESCRIPTIONS
CESSNA
MODEL
172N
overcast;
the
flashing light
reflected from water droplets
or
particles
in the
atmosphere,
particularly
at
night,
can
produce
vertigo
and loss
oforienta-
tion.
INTERIOR LIGHTING
Instrument panel
and
switch
and
control panel
lighting
is
provided by
flood
lighting, integral lighting,
and
post
lighting (if
installed).
Lighting
intensity is controlled by
a
dual
light dimming rheostat
equipped
with
an
outer knob labeled PANEL LT, and an inner knob labeled RADIO
LT,
located below
the
throttle. A
slide-type switch (if installed)
on
the
overhead
console, Iabeled
PANEL LIGHTS, is
used
to
select flood
lighting in
the
FLOOD
position, post lighting in
the POST
position, or
a
combination of
post
and
flood
lighting in
the
BOTH position.
Instrument panel
and
switch
and
control panel flood
lighting
consists
of
a single red
flood
light in
the
forward
edge of
the overhead console.
To
use
flood
lighting,
move
the slide switch in
the overhead console, Iabeled
PANEL LIGHTS, to
the FLOOD
position
and
rotate
the
outer knob
on
the
Iight dimming
rheostat,
Iabeled
PANEL
LT,
clockwise
to the desired
Iight
intensity.
Post
lights (if installed)
are
mounted
at
the
edge
of each
instrument
and
provide direct lighting.
To use
post lighting,
move
the slide switch in
the
overhead console, Iabeled PANEL LIGHTS,
to the
POST
position
and
rotate the outer knob
on the
light dimming rheostat, labeled PANEL
LT,
clockwise
to obtain the desired
Iight intensity.
When the
PANEL LIGHTS
switch is
placed in
the
BOTH
position,
the
flood lights
and
post lights
will
operate simultaneously.
The engine instrument cluster
(if
post lights are installed),
radio
equipment, and magnetic compass have integral lighting
and
operate
independently of post or flood lighting.
The
intensity of this
lighting
is
controlled
by the
inner
knob on the
light
dimming rheostat labeled RADIO
LT; rotate
the
knob clockwise to obtain the desired
light
intensity. How-
ever,
for d,:ylight
operation, the compass and
engine instrument
lights
may
be
turned
off
while still maintaining maximum light intensity for
the
digital
readouts
in
the
radio equipment. This is
accomplished by
rotating
the
RADIO
LT knob
full
counterclockwise. Check that the flood
lights/ post
lights
are
turned
off for
daylight operation
by
rotating
the
PANEL
LT
knob
fuII
counterclockwise.
A cabin
dome
light, in
the aft
part
of
the overhead console, is operated
by
a
switch
near
the
Iight.
To
turn
the
light
on,
move the
switch
to
the
right.
A control
wheel map
light
is available
and
is mounted
on the
bottom
of
the pilot's control wheel.
The
light illuminates the lower portion of
the
7-28
1
JuIy
1979