Cessna 152 - Supplement: Emergency Locator Transmitter (ELT)

PILOT'S
OPERATING
HANDBOOK
SUPPLEMENT
EMERGENCY
LOCATOR
TRANSMITTER
(ELT)
SUPPLEMENT
EMERGENCY
LOCATOR
TRANSMITTER
(ELT)
SECTION 1
GENERAL
The
ELT
consists
of
a
self-contained
dual-frequency
radio
transmitter
and
battery
power
supply,
and
is
activated
by
an
impact
of
5g
or
more
as
may
be
experienced
in
a
crash
landing.
The
ELT
emits
an
omni-directional
signal
on
the
international
distress
frequencies
of
121.5
and
243.0 MHz.
(Some
ELT
units
in
export
aircraft
transmit
only
on
121.5
MHz.)
General
aviation
and
commercial
aircraft,
the
FAA,
and
CAP
monitor
121.5 MHz,
and
243.0
MHz
is
monitored
by
the
military.
Following
a
crash
landing,
the
ELT
will
provide
line-of-sight
transmission
up
to
100
miles
at
10,000 feet.
The
ELT
supplied
in
domestic
aircraft
transmits
on
both
distress
frequen-
cies
simultaneously
at
75
mw
rated
power
output
for
50
continuous
hours
in
the
temperature
range
of
-4°F
to
+131
°F
(-20°0
to
+55°0).
The
ELT
unit
in
export
aircraft
transmits
on
121.5
MHz
at
25
mw
rated
power
output
for
50
continuous
hours
in
the
temperature
range
of
-4°F
to
+131°F (-20°C
to
+55°C).
The
ELT
is
readily
identified
as
a
bright
orange
unit
mounted
behind
the
baggage
compartment
wall
in
the
tailcone.
To
gain
access
to
the
unit,
remove
the
baggage
compartment
wall.
The
ELT
is
operated
by
a
control
panel
at
the
forward
facing
end
of
the
unit
(see
figure
1).
SECTION
2
LIMITATIONS
The
following
information
must
be
presented
in
the
form
of
a.
placard
located
on
the
baggage
compartment
wall.
1
July
1978
EMERGENCY
LOCATOR
TRANSMITTER
INSTALLED
BEHIND
THIS
COVER.
MUST
BE
SERVICED
IN
ACCORDANCE
WITH
FAR
91.52
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