ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ELT 345 (P/N: A3-06-2880)
Page 30 of 58
25-62-35
Figure 8 Short & Long 406 MHz Message Examples
SUBTASK 25-62-35-750-009
N.
ELT Reset Check – Item 5h
1)
Place the ELT control switch in the ON position.
2)
Return the switch to the “ARM” position.
3)
If the ELT is working properly, the LED will turn off.
SUBTASK 25-62-35-750-010
O.
Installed Transmitter / Antenna Test – Item 6
1)
Re-install the ELT in Aircraft.
2)
Perform the following functional check within the first 5 minutes after the hour (UTC), as required by AC
43.13-1, Chapter 12, § 12-22, Note 3.
3)
Notify any nearby control tower of your intentions.
4)
Tune an AM receiver to 121.5 MHz.
NOTE:
A low-cost AM radio is suggested for this test, as the aircraft Com Transceiver is very sensitive
and may pick up a weak signal, even if the antenna is disconnected from the ELT. Please
ensure that the ELT is switched off before the 406 MHz burst is initiated, approximately 50
seconds after activation.
5)
Locate the radio approximately 20’ to 30’ from the antenna.
6)
Initiate a self-test by momentarily pressing the cockpit remote switch into the SELF-TEST position until the LED
blinks once, then releasing the switch. The LED will begin flashing continuously.
7)
Listen for 3 audible sweeps on the receiver, which takes about 1 second.
8)
Verify the buzzer sounds upon activation.
9)
Note the LED activity on the cockpit remote switch. If the ELT is working properly, the LED will stay on for
approximately 1 second and then turn OFF.
NOTE:
This test also completes the requirement to check ELT controls by verifying operation of the
remote switch.
10)
Refer to Table 6 if the LED displays error code flashes.
