Textron Cessna 172R User Manual

CESSNA
MODEL
172R
SECTION
7
AIRPLANE
&
SYSTEMS
DESCRIPTION
AVIONICS SUPPORT
EQUIPMENT
Avionics
operations
are
supported
by
the avionics
cooling
fan,
microphone
and
headset
installations
and
static
discharge
wicks.
AVIONICS
COOLING
FAN
An
avionics
cooling
fan
is
installed
on
the
left
side
of
the interior
firewall.
The
system
utilizes
a
single
electric
fan
and
associated
ductwork
to
force-cool
the
center
stack radios.
Power
to
the
electric
fan
is
supplied
through
the
AVN FAN
circuit
breaker. The
fan
operates
whenever the Master
and
Avionics!
Master switches
are
both
ON.
MICROPHONE
AND
HEADSET
INSTALLATIONS
Standard
equipment
for
the
airplane
includes
a
handheld
microphone,
an
overhead
speaker,
two
remote-keyed
microphone
switches
on
the control
wheels,
and
provisions
for
boom
mic/headsets
at
each
pilot
and
passenger
station.
The
hand-held
microphone
contains
an
integral
push-to-talk
switch. This
microphone
is
plugged
into
the
center
pedestal
and
is
(
accessible
to
both the
pilot
and
front
passenger.
Depressing
the
push-to-talk
switch allows
audio
transmission
on
the
Com
radios.
The
overhead
speaker
is located
in
the
center
overhead console.
Volume
and
output
for
this
speaker
is controlled
through
the
audio
panel.
Each
control
wheel
contains
a
miniature
push-to-talk
switch.
This
switch
allows the
pilot
or
front
passenger
to
transmit
on
the
Com
radios
using
remote
mics.
Each station
of
the
airplane
is wired
for
aviation-style
headsets.
Mic
and
headphone
jacks
are
located
on
each
respective
arm
rest
and allow
for
communications
between
passengers
and
pilot.
The
system
is wired
so
that
microphones
are
all
voice-activated!
Additional
wiring
provisions
inside the audio
panel
ensure
that
only
the
pilot
or
front
passenger
can
transmit
through
the
com
radios.
Revision
8
7-47
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Textron Cessna 172R Specifications

General

Brand	Textron
Model	Cessna 172R
Category	Aircrafts
Language	English