9-S1-6
PAGE
Virus SW 121
Pilot Operating Handbook
POH-121-00-40-001
PAGE REV. 0
SECTION
9
SUPPLEMENTS
1
Remove avionics bay access panel along the lower aft center access
panel of baggage compartment.
2
Disconnect fixed antenna lead from front of unit.
3
Disconnect lead from remote switch and indicator unit.
4
Disconnect antenna from mounting tray.
5
Loosen attach straps and remove transmitter unit.
6
Attach antenna to antenna jack on front of unit.
7
Set main control switch to ON.
8
Hold antenna upright as much as possible.
SECTION 7: SYSTEM DESCRIPTION
7.21 ELT SYSTEM
This airplane is equipped with a self-contained KANNAD AF 406 COMPACT
406 MHz emergency locator transmitter- ELT System that generates a signal
to assist in search and rescue for missing aircraft. The transmitter unit is au-
tomatically activated upon sensing a change of velocity along its longitudinal
axis exceeding 4 to 5 ft/sec
2
. Once activated, the transmitter transmits VHF
band audio sweeps at 121.5 Mhz until battery power is gone. In addition, for
the first 24 hours of operation, a 406 MHz signal is transmitted at 50-second
intervals. This transmission lasts 440 ms and contains identification data re-
ceived by Cospas-Sarsat satellites. The transmitted data is referenced in a
database maintained by the national authority responsible for ELT registra-
tion to identify the beacon and owner. The ELT transmitter is installed imme-
diately behind the aft cabin bulkhead, slightly to the right of the airplane cen-
terline. The transmitter and antenna are accessible through the avionics bay
access panel along the aft portion of the RH fuselage or the lower aft center
access panel of baggage compartment. The main transmitter control switch
is labeled “ON” - “ARM”. The transmitter is in the armed position for normal
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