Textron Cessna 172R - Page 378

SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
4
-
FAA
APPROVED
CESSNA
MODEL
172R
SECTION
4
NORMAL
PROCEDURES
As
long
as
the
remote
switch/annunciator
is
in
the
AUTO
position
and the
ELT
master
function
selector switch remains
in
the
AUTO
position,
the
ELT
automatically
activates when the unit
senses
longitudinal
inertia
forces
as
required
in
TSO-C91A.
Following
a
lightning
strike,
or
an
exceptionally
hard
landing,
the
ELT
may
activate
although
no
emergency
exists.
If
the
remote
switch/annunciator
illuminates,
the
ELT
has
inadvertently
activated
itself.
Another
way
to
check
is
to
select
121.5
MHz
on
the
radio
transceiver and listen
for
an
emergency
tone
transmission.
If
the
remote
switch/annunciator
is
illuminated
or an
emergency
tone
is
heard,
position
the
remote
switch/annunciator
in
the
RESET
position
and
release
to
the
AUTO
position.
The
ELT
must
be
serviced
in
accordance
with
FAR
Part
91.207.
INSPECTION/TEST
1
.
The
emergency
locator
transmitter
should be
tested
every
1
00
hours.
NOTE
Test
should
only
be
conducted
within
the
first
5
minutes
of
each hour.
2.
Disconnect
antenna
cable
from
ELT.
3.
Turn
airplane
battery
switch
and
avionics
power
switches
ON.
4.
Turn
airplane
transceiver
ON
and
set
frequency
to
121.5
MHz.
5.
Place
remote
switch/annunciator
in
the
ON
position.
The
annunciator should
illuminate.
Permit
only
three
emergency
tone
transmissions,
then
immediately
reposition
the
remote
switch/annunciator
to
the
RESET
position
and
release
to
the
AUTO
position.
6.
Place
the
ELT
master
function
selector
switch
in
the
ON
position.
Verify
that the
transmitter
annunciator
light
on
the
ELT
and the
remote
switch/annunciator
on
the
instrument
panel
are
illuminated.
S4-8
Feb
28/00
All manuals and user guides at all-guides.com