Cessna 177 SERIES Service Manual

16-96.
EMERGENCY
LOCATOR
TRANSMITTER.
place
the
ELT
function
selector
switch
in
the
ARM
Beginning
with 1978
Models.
position
after
testing
ELT.
e.
Test
should
be conducted
only
within
the
time
16-97.
DESCRIPTION.
The ELT
is a self-contained,
period made
up of
the first
five minutes
after
any
solid
state unit,
having
its
own
power
supply,
with an
hour.
externally
mounted
antenna.
The
C589511-0103
trans-
mitter
is
designed
to
transmit
simultaneously
on dual
jCAUTION
i
emergency
frequencies
of 121.5
and
243.0
Megahertz.
The
C589511-0104
transmitter
used for
Canadian
Tests
with the
antenna
connected
should
be
registry,
operated
on 121.5 only.
The unit is
mount-
approved and
confirmed by
the nearest con-
ed in
the tailcone.
aft of
the baggage
curtain
on
the
trol
tower.
rint
hand
side.
The
transmitters
are
designer
to
provide
a broadcast
tone that
is audio modulated
in a
NOTE
swept
manner
over
the
range
of
1600
to 300
Hz
in
a
distinct.
easily
recognizable
distress
signal
for
re-
Without
its antenna
connected.
the ELT
will
cepton by
search and
rescue personnel
and
others
produce
sufficient
signal
to reach your
re-
monitoring
the emergency
frequencies.
Power
is
ceiver,
yet it
will not disturb
other
commun-
supplied to the
transmitter
by a battery-pack
which
ications
or damage
output circuitry.
has
the
service
life of
the
batteries
placarded
on
the
batteries
and also
on the outside
end
of the transmit-
NOTE
ter.
ELT's
are
equipped
with
a batterv-Dack
contain-
ing
lithium "D'
size batteries
(See figure 16-18).
After accumulated
test or
operation time
The ELT exhibits
line of sight
transmission
charac-
equals 1
hour. battery-pack
replacement
teristics
which correspond
approximately
to 100 miles
is required.
at a
search
altitude
of
10,
000
feet.
When
battery
in-
spection
and replacement
schedules
are
adhered to,
f.
Check calendar
date for
replacement
of batten-
the ELT supplied
domestic
aircraft
transmits
on both
pack. This
date is supplied
on a
sticker attached
to
distress
frequencies
simultaneously
at 75 mw
rated
the outside
of the ELT
case and
to each battery.
power
output
for
48
continuous
hours
in the
tempera-
ture range
of -4'F
to -131'F
(-20°C to -55'C).
The
16-100.
REMOVAL
AND I'STALI
ATION
OF TRANS-
ELT
unit in export
aircraft
transmits on
121.5 MHz
MITTER.
(Refer to
figure 16-17).
at 25
mw rated power
output for 100
continubus hours
a. Remove
baggage
curain to gain
access to the
in the temperature
range of -40°F
to -131'F (-40°C
transmitter
and antenna.
to
-55cC). Battery-packs
have a
normal shelf life
of b.
Disconnect co-axial
cable from
end of transnit-
five
to ten (5-10)
years and
must be replaced
at 1/2
ter.
of normal
shelf life
in accordance with
TSO-C91.
c. Remove
the two =10
screws from
the baseplate
Cessna
specified
5 years
replacement
of
lithium
(4-
of the ELT
and remove
ELT.
cell)
battery
packs,
C585511-0105.
d.
To reinstall
transmitter,
reverse
preceding
steps.
16-98.
OPERATION.
A
three
position
switch
on
the
forward
end of
the
unit controls
operation.
Placing
fCAUTION
the
switch
in the
ON
position
will
energize
the
unit
to
start transmitting
emergency
signals.
In the OFF
Ensure
that the direction
of flight
arrous
position,
the unit
is inoperative.
Placing
the switch
(placarded
on
the transmitter)
are
pointing
in the ARM
position will set
the unit to
start trans-
towards
the nose
of the aircraft.
mitting
emergency
signals
only after
the unit
has
re-
ceived
a 5g (tolerances
are -2g
and -Og)
impact force,
16-101. REMOVAL
AND INSTALLATION
OF ANTEN-
for
a duration
of 11-16
milliseconds.
NA. (Refer
to figure
16-17.)
a.
Disconnect
co-axial
cable
from
base
of antenna.
jICAU_
TiO ~
~b.
Remove
the
nut and lockwasher
attaching
the
t~A UTIO~NI~
~
antenna
base
to the
fuselage
and
the antenna
will be
Do not leave
the emergency
locator transmit-
free
for removal.
Ler
in the
ON position
longer
than 5 seconds
c. To
reinstall
the antenna,
reverse
the preceding
or
you may activate
downed
aircraft proce-
steps.
dures
by C.A.P..
D.O.T.
or
F.A.A.
per-
sonnel.
NOTE
16-99. CHECKOUT INTERVAL:
Upon reinstallation
of antenna. cement
rubber
boot
14)
using
RTV102.
General
100
HOURS.
Electric
Co.
or equivalent.
to
antenna
a. Turn
aircraft
master switch
ON.
uhip onlv:
do not applv
adhesive
to fuse-
b. Turn
aircraft transceiver
ON and set
frequency
lace skin
or damage
to paint mav
result.
on receiver
to 121.5
MHz.
c.
Remove
the ELT's
antenna
cable from
the ELT
16-102.
REMOVAL
ANT)
INSTA
LTATION
OF BATTERY
unL.
PACK.
(Refer to
figure 16-18.
)
d.
Place
the ELT's
function
selector
switch
in the
ON
position
for 5
seconds
or less.
Immediately
re-
Change
7
16-37

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)