SECTION 7
AIRPLANE
AND
SYSTEMS DESCRIPTION
CESSNA
MODEL 172S NAV
III
AVIONICS SUPPORT EQUIPMENT (Continued)
12V
POWER OUTLET
A power converter located
on
the cabin side of the firewall, forward
of the right instrument
panel, reduces the aircraft's 28 VDC power to
12
VDC.
This converter provides
up
to
10
amps of power to operate
portable devices such
as
notebook computers and audio players.
The power output connector (POWER OUTLET 12V -10A) is located
on
the center pedestal (refer to Figure 7-2).
For
airplanes 172S10103 and
On,
a switch located
on
the switch
panel labeled "CABIN
PWR
12V" controls the operation of the
power
outlets.
NOTE
• Charging
of
lithium batteries may cause the lithium
batteries to explode.
•
Take care to observe the manufacturer's power
requirements prior to
plugging any device into the
12
volt Cabin Power System connector. This
system is
limited to a maximum of
10
amps.
•
Use
caution with power/adapter cables
in
the cabin
to avoid
entangling occupants or cabin furnishings
and
to prevent damage to cables supplying live
electric
current.
• Disconnect power/adapter cables when not
in
use.
STATIC DISCHARGERS
Static wicks (static dischargers) are installed
at
various points
throughout the airframe to reduce interference from precipitation
static. Under some severe static conditions,
loss of radio signals is
possible even with static dischargers installed. Whenever possible,
avoid known severe precipitation areas to prevent loss of
dependable radio
signals.
If
avoidance
is
impractical, minimize
airspeed
and
anticipate temporary loss
of
radio signals while
in
these areas.
Static dischargers lose their effectiveness with age, and therefore,
should
be
checked periodically (at least at every annual inspection)
by
a qualified technician.
7-70
U.S.
172SPHAUS-03
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