ACR&Artex C406-2 HM - Manual (Page 47)

25-62-11
Page 47 of 87
JUN 20/13
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-2 (453-5000), C406-2HM (453-5001)
SUBTASK 25-62-11-750-012
Q. Antenna Test – Item 7
CAUTION: DO NOT ALLOW THE DURATION OF THIS TEST TO EXCEED 5 SECONDS.
(1) Tune a low quality AM receiver (i.e., radio) to 121.5 MHz.
NOTE: The aircraft transceiver is not recommended for this test, because it is too sensitive
to verify the integrity of the antenna system and it may pick up a weak signal even if
the antenna is disconnected from the ELT. An AM radio provides a better level of
confidence for this test.
(2) Place the radio approximately six inches from the antenna.
(3) Activate the ELT by placing the cockpit remote switch in the “ON” position.
NOTE: Perform this test within the first five minutes after the hour UTC.
(4) Listen for 3 audible sweeps on the radio, which takes about 1 second. An audible signal
verifies energy is being transmitted by the antenna.
(5) Reset the ELT by placing the cockpit remote switch in the “ARM” position.
SUBTASK 25-62-11-750-013
R. Inspection and Test Documentation – Item 8
(1) Make an appropriate entry in the aircraft maintenance records (i.e., logbook), including the
date the ELT inspection and testing was satisfactorily completed.
(2) In addition to the requirements of Step 1, for aircraft operating under Canadian authority and
following satisfactory completion of performance testing, the date on which the test was
performed shall be marked on the ELT external casing in a legible and permanent manner.
TASK 25-62-11-810-801
3. Fault Isolation
SUBTASK 25-62-11-810-001
A. Self-Test Error Troubleshooting Guidelines
(1) Table 6 describes the ELT self-test LED error codes (i.e., flash codes), their probable causes,
and possible solutions. The 5-flash error is not present when the ELT is programmed with a
serial user protocol (short message).
NOTE: Upon activation, the LED will display a long single flash, which is normal. Any self-
test error codes will display following this initial flash. Do not confuse the initial flash
with a 1-flash error code. If there are multiple errors, there is a 0.5 to 1.0 second
pause between each error code.