Cessna 172N - Page 133

CESSNA
MODEL
172N
SECTION
7
AIRPLANE
&
SYSTEMS
DESCR,IPTIONS
The
battery
and external
power
circuits
have
been
designed
to
com-
pletely
eliminate
the need
to
?'jumper"
across
the
battery
contactor
to
close
it for
charging
a
completely
"dead"
battery.
A
special
fused circuit
in the external
power
system
supplies
the
needed
"iumper"
across the
con-
tacts
so
that
with
a
"dead"
battery
and
an
external
power
source
appliedt
turning
on
the master switch
will
close
the
battery
contactor.
tIG
HTIN G
SYSTE
MS
EXTERIOR
tIG
HIIN G
Conventional
navigation
lights
are located
on
the wing
tips
and top
of
the rudder.
A
single
landing
light
or
dual
landing/taxi
lights
are installed
in
the cowl
nose
cap,
and
a
flashing
beacon
is mounted
on
top of
the verti-
cal
fin.
Additional lighting
is
available
and includes
a strobe light
on each
wing
tip
and two
courtesy
lights,
one
under
each wing,
just
outboard
of
the
cabin
door.
The
courtesy
lights
are operated
by
the dome
light
switch on
the
overhead
console.
A11
exterior
lights,
except
the courtesy
lights,
are
controlled
by
rocker
type
switches
on
the left
switch
and control
panel.
The
switches
are
ON
in the
up
position
and
OFF
in the down
position.
The
flashing
beacon should
not be
used
when flying
throtgh
clouds
or
overcast;
the
flashing
light
reflected from
water
droplets
or
particles
in
the
atmosphere,
particularly at night,
can
produce
vertigo
and
loss
of
orientation.
The
two
high intensity
strobe
lights
wiII enhance
anti-collision
protec-
tion. However,
the lights
shotrld
be
turned
off when
taniing in
the vicinity
of other
aircraft,
or during
night
flight through
clouds,
fog
or baze.
INTERIOR
TIGHIING
Instmment
and control
panel
lighting
is
provided
by
flood lighting,
in-
tegral lighting,
and
post
lighting
(if
installed).
Two concentric
rheostat
control
knobs
below
the
engine
controls,
labeled
PANEL
LT
and RADIO LT'
control intensity
of the instmment
and control
panel
lighting.
A
slide-type
switch
(if
instatled)
on the
overhead
console,
labeled
PANEL LTS, 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.
Instnrment
and
control
panel
flood
lighting
consists
of
a
single
red
flood
light
in the forward
part
of the
overhead
console.
To use
the flood
Iighting,
rotate
the
PANEL
LT
rheostat
control
knob clockwise
to
the de-
sired
intensity.
The instnrment
panel
may
be equipped
with
post
lights
which
are
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