Raytheon Beech Baron E55 - Page 696

Raytheon
AiKraft
Company
BARON
55
AND
58
SHOP MANUAL
TESTING
EMERGENCY LOCA
TOR
TRANSMITTER
Generally,
tests
will be
performed
following
maintenance
or
repair
of
ELTs,
other than
battery
replacement,
to
determining
their
operational
capability. Testing
the
ELT,
if
improperly
done,
could
trigger
false alerts
and
create
frequency
jamming,
and
may
interfere
with the
reception
of
a
bonafide
emergency
transmission.
Federal
Communications
Commission
regulations
require
that this
testing
be
performed
in
a
screened
or
shielded
test
room,
or
in
a
test
enclosure
that will hold the
self contained ELT
unit
with
the
antenna
fully
extended.
CAUTION:
The
ELT
switch should
not
be turned
ON unless
the
ELT
is
connected to
its
associated
antenna
or
a
50-ohm
dummy
load.
Operational
testing
of
installed
ELT’s
may
be
accomplished
as
follows:
NOTE: Tests
should not
be
longer
than
three
audio
sweeps.
One
audio
sweep may
be
defined
as
amplitude
modulating
the
carrier
with
an
audio
frequency sweeping
downward
over a
range
of
not
less
than
700
Hz,
within the
range
1600
to
300
Hz,
and
a
sweep
repetition
rate
between
two
and four
Hz.
Tests should be
conducted
only
in the
first
five
minutes of
any
hour,
if
the
operational
tests
must be
made
at
a
time
not
included
within
the
first fiveminutes after
the
hour,
the
tests
should be coordinated
with the
nearest
FAA
tower
or
flight
service
station.
a.
Turn COMM-1
ON and
tune to
121.5
MHz.
b.
Turn the
COMM-1 audio switch to
the
SPEAKER
position
and
place
the volume
control
in
the
center
of
its
range.
c.
Turn the
ELT ARM-OFF-ON
switch
to ON
and
monitor
ELT
signal.
On
airplanes
equipped
with
a
remote
switch
(located
in the
aft
fuselage
on
the RH
side
or on
the
instrument
panel),
the
remote
switch
maybe momentarily
flipped
to
the
XMIT
position
and
the ELT
signal
monitored.
NOTE:
If
there
is
no
audible
signal,
the
battery
is
probably
disconnected
or
dead,
assuming
that
the
VHF
transceiver
is
operational.
d.
Place
the
ARM-OFF-ON switch
on
the
ELT
to
the OFF
position.
If
the
remote
switch
is
being
utilized to
test
the
1
unit,
the
switch
should be released
so
it
will
return
to
the ARM
position.
The
audio
signal
should
disappear
completely.
e.
Place
the
switch
in
the
ARM
position.
There
should
be
no
audio
signal
present.
NOTE:
If
the
signal
is
heard,
the
impact
switch
has
probably
been activated and should
be
reset.
f.
Firmly
press
the
reset
switch
on
the front of
the
ELT
and
listen to
ensure
the
audio
signal
disappears
from
COMM-1.
GROUND
COMMUNICA TION
(OPTIONAL)
(TH-1389,
TH-
1396
AND
AFTER)
The
airplane
may
be
equipped
with
an
optional
ground
communication
system.
This
system
allows
radio
communication
while all other
electrical
equipment
is
turned
off.
The
switch
for this
system
is
a
push-on,
push-off
switch located
near
the
top
of
the instrument
panel
to
the
right
of
center.
The
system’s
two
5-amp
circuit breakers
are
located
in
the
nose
baggage
compartment.
E21
SECTION
13