Textron Cessna 172S Skyhawk SP, Information Manual

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SECTION 9 - SUPPLEMENTS
. SUPPLEMENT 4 - FAA APPROVED
SECTION 4
NORMAL PROCEDURES
i -
CESSNA
MODEL 172S
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-C91 A.
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 FARPart 9.1.207.
INSPECTIONITEST
-
'-
1. The emergency locator transmitter should be tested every 100
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.
Revision 1