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and an optional
control
wheel
map light.
The console
map lights
operate
in conjunction
with instrument
panel
flood lighting
and
consist
of
two
additional
openings
just aft
of
the
overhead
flood light
openings.
These
openings
have
sliding
covers
controlled
by
small
round
knobs.
To use
the
map
lights,
slide
the
covers
open by moving
the two
knobs
toward
each other.
Close
the
covers when
the
map
lights
are
no
longer
required.
A
map light,
mounted
in
the
lower
surface
of
the
glare
shield,
is used for
illuminating
approach
plates
or other
charts
when using
a
control
wheel
mounted
approach
plate
clip.
The map
light switch,
labeled
MAP LIGHT,
is
located adjacent
to the
light.
To use
the
light,
turn
on
the
MAP LIGHT
switch
and
adjust
intensity
with
the
INSTRUMENTS
control
knob.
The
optiorial
map
light
mounted
on
the
bottom
of
the
pilot's
control
wheel
illuminates
the
lower
portion
of
the
cabin
in front
of
the
pilot,
and is used
when checking
maps
and other
flight
data during
night
operation.
To
operate
the
light,
turn
on
the
NAV light
switch
and adjust
map light inten-
sity with
the
rheostat
control
knob on
the
back
of
the
control
wheel
pad on
the
right
side.
A
dome
light
is
mounted
in
the
ceiling
of
the
rear
cabin
area
as an
aid
to
loading of
passengers
during
night
operations.
A slide switch
ad-
jacent
to the
light
turns the
light
on
and
off.
CABIN
HEATING, VENTILATING
AND
DEFROSTING SYSTEM.
The
temperature
and volume
of
airflow
into
the
cabin
can
be
regulated
to
any
degree
desired
by manipulation
of
the
push-pull
CABIN HEAT
and
CABIN AIR knobs.
Both control
knobs
are
the
double-button
type
with
friction
locks
to
permit
intermediate
settings.
NOTE
For
improved
partial
heating
on mild days,
pull out
the
CABIN AIR knob slightly
when
the
CABIN HEAT knob is
out.
This
action
increases
the
airflow
through the
system,
increasing
efficiency,
and blends cool
outside
air
with
the
exhaust
manifold
heated
air,
thus
eliminating
the
possibility
of overheating
the
system
ducting.
The rotary
type
DEFROST
knob regulates
the
airflow
for windshield
defrosting.
2-8
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