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SECTION 9
SUPPLEMENTS
INTRODUCTION
CESSNA
MODEL 150M
This section consists of a series
of
supplements, each covering a
single optional system which may be installed in the airplane.
Each sup-
lement contains a brief description, and when applicable, operating lim-
itations, emergency and normal procedures, and performance. Other
routinely installed items of optional equipment, whose function and opera-
tional procedures do not require detailed instructions, are discussed in
Section 7.
9-2
PILOT'S OPERA TING HA NDBOOK
SUPPLEMENT
SUPPLEMENT
EMERGENCY LOCATOR
TRANSMITTER
(ELT)
EMERGE
N
CY LOCATOR
TR
ANSMITTER
(EL
T)
SECTION
1
GENERA
L
The
ELT
consists
of
a self-contained
dual
-frequency radio
transmit-
ter and
battery power
supply, and is activated by an impact of 5g
or
more
as
ma
y be
experienced
in
a
crash
landing.
The
ELT
emits an
omni
-dir
e
c-
tional signal
on the international
distress f
requencies of 12
1.
5 a
nd 243
.
0
MHz. (Some
ELT units in
export aircraft t ransmit only on 12
1.
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 E
LT will
provide
line-of-sight
transmission up to
100
miles at
10,000
fe
e
t.
The
duration of
ELT
transmissions is affected by
ambient
temperature.
At temperatur
es
of
+210 to
+54°C
(+70°
to
+130°
F),
continuous transmis
sion
for
115
hours
can be
expected;
a temperature
of
-40 °C (-40°F)
will
shorten
the
duration
to 70
hours
.
The ELT is
readily identified
a
s
a
bright
orange
unit mounted
behind
the baggage
compartment wall
in
t
he
t ailcone. To gain access t
o
the
unit,
remove the
baggage
compartment wall. The ELT is operated by a
contr
ol
panel at the fo rwa
rd
facing
end of the unit (see figure 1).
SECTION 2
LIMITATIO
NS
There is no change to the airplane
limitations when
this
equipment is
installed.
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