May - Raytheon BEECH BARON 58P Maintenance Manual

BEECHCRAFT
BARON
58P AND 58TC
MAINTENANCE
MANUAL
m.
Test
the ELT
as
i ndi
cated
under
a.
Turn ON the VHF transceiver COMM-I
TESTING EMERGENCY LOCATOR
TRANSMITTER.
and
tune
the transceiver
to 121.5 MHz.
TESTING
EMERGENCY
LOCATOR
TRANS-
b. Turn
the
COMM-1
audio
switch
to
MITTER.
the SPEAKER
position and
place
the volume
control
in the
center
of its range.
Generally,
tests
will be
performed
fol-
lowing
maintenance
or repair
of ELTs,
c.
Turn the ELT ARM-OFF-ON switch
to
other than
battery
replacement,
to
deter-
ON and
monitor the ELT
signal. On
a~r-
mine their
operational
capability.
Test-located
on
the
aft fuselage
on
the
RH
lanes
equipped with
a
remote switch
ing
the ELT, if
improperly done,
could
trigger false alerts
and
create
frequency
side
or
on
the
instrument panel),
the
jamming
and
may
interfere with the recep-
switch
may
be
momentarily
flipped
to the
tion of
a
bonafide emergency transmission.
XMIT
position and
the ELT
signal
moni-
Federal
Communications
Comission
regu-
tored.
lations
require that this
testing be
per-
formed
~n a
screened
or
shielded
test
NOTE
room,
or ~n a
test enclosure
that
will
hold the self contained ELT
unit with the
A distinctive
downward
sweeping
antenna
fully
extended.
tone
should have been
heard from
the
monitoring
rece~ver
during
CAUTION
the
test. If the
tone
was
heard,
the ELT
Is
functi'oning
properly.
The ELT
switch should
not be
If there
was
no
audible
tone,
turned ON unless the
ELT
is
con-
(assuming
that
the
VHF
nected
to
its
associated
antenna
transceiver
Is
operational),
the
or a
50-ohm
dummy load.
battery
is
probably
disconnected
out-dated
or
discharged.
Operational testing
of
installed ELTs
may
be
accomplished
as
follows:
d.
Place
the ARM-OFF-ON
switch
on
the
ELT
to the OFF
position. If
the
remote
NOTE
switch is
being
utilized
to test the
unit,
the
switch
should be
released
so
it will
Tests
should
not
be longer
than
return
to
the ARM
position.
The
audio
three
audio
swwe e p s
One
audio
signal
should
disappear completely.
sweep
may
be defined
as
amplitude
modulating
the
carrier with
an
e.
Place
the
ARM-OFF-ON
switch
on
the
audio
frequency sweeping
downward
ELT
to
the ARM
position.
There should
be
over
a
range of
not
less th´•an 700
no
audio signal
present.
Hz,
within the
range
1600
to
300
Hz,
and
a sweep
repetition
rate
NOTE
between
two
and
four Hz. Tests
should be
conducted only
in
the
If
a
signal
is heard,
the
impact
first
five
minutes
of
any
hour.
switch has
probably
been
acti-
If the
operational
tests
must
be
vated and
should
be
reset.
made
at
a
time
not
included within
the first
five
minutes after
the
f.
Firmly
press
the
reset
switch
on
hour,
the
tests
should be coordi-
the front of the ELT
and listen
to
ensure
nated
with the
nearest
FAA
tower the
audio
signal disappears
from COMM-1.
or
flight
service station.
"END"
25-60-00
Page
204
May 22/87
A22