Operating instructions

25-60
Page 8
Serials 1863 & subs w/ Artex ME406 ELT
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODEL SR22
15 Apr 2007
B. Emergency Locator Transmitter - Serials 1863 & subs w/ Artex ME406 ELT (See Figure 25-602)
(1) Removal - ELT
(a) Remove access panel CB06. (Refer to 06-00)
(b) Disconnect remote control panel indicator cable from transmitter.
(c) Disconnect antenna cable from transmitter.
(d) Loosen strap securing transmitter to mounting tray. Remove transmitter from airplane.
(2) Installation - ELT
(a) Position transmitter to mounting tray and secure with strap.
(b) Connect antenna cable to transmitter.
(c) Connect remote control panel indicator cable to transmitter.
(d) Perform Operational Test - ELT. (Refer to 25-60)
(e) Install access panel CB06. (Refer to 06-00)
(3) Operational Test - ELT
Note: Regulations require that transmitter tests only be done during the first 5 minutes of
each hour and must not last for more than 3 audio sweeps (1.5 seconds). If you
are at a location where there is an FAA control tower or other monitoring facility,
notify the facility before beginning the tests. Never activate the ELT while airborne
for any reason.
A low quality AM broadcast receiver should be used to determine if energy is
being transmitted from the antenna. When the antenna of the radio (tuning dial on
any setting) is held about 6 inches from the activated ELT antenna, the ELT aural
tone will be heard on the AM broadcast receiver. This is not a measured check,
but it does provide confidence that the antenna is radiating sufficient power to aid
search and rescue. The aircraft’s VHF receiver, tuned to 121.5 MHz, may also be
used. This receiver, however, is more sensitive and could pick up a weak signal
even if the radiating ELT’s antenna is disconnected. Thus it does not check the
integrity of the ELT system or provide the same level of confidence as does an AM
radio.
(a) Remove access panel CB06. (Refer to 06-00)
(b) Monitor 121.5 Mhz using aircraft COM receiver or portable hand-held receiver.
(c) Turn receiver squelch control all the way down or to OFF position.
(d) Set transmitter control switch to ON position.
(e) Verify audio sweep tone can be heard on COM receiver.
(f) Verify audio tone can be heard from buzzer.
(g) Set transmitter control switch to ARMED position.
(h) Set remote control panel indicator switch to ON position.
(i) Verify LED flashes and is readily visible from pilots operating position.
(j) Verify audio sweep tone can be heard on COM receiver.
(k) Verify audio tone can be heard from buzzer.
(l) Set remote control panel indicator switch to ARM position.
(m) Verify LED and buzzer pulse once and audio sweep tone stops transmitting. If LED and
buzzer pulse more than once, refer to Troubleshooting. (Refer to 25-60)
(n) Install access panel CB06. (Refer to 06-00)
(4) Inspection/Check - ELT
Note: Perform Inspection/Check in accordance with 14 CFR 91.207.