ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ME406 (453-6603), ME406HM (453-6604)
Page 35 of 72
Mar 19/15
25-62-30
SUBTASK 25-62-30-750-012
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.
NOTE: The ELT contains an internal self-test function that executes upon deactivation of the
ELT. This self-test function is designed to test the integrity and radiated power of the
ELT, coax cable, and antenna. If no LED error codes are displayed after deactivation of
the ELT, it is in compliance with FAR Section 91.207 subsection d paragraph (4).
SUBTASK 25-62-30-750-013
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 25-62-30-810-801
3.
Fault Isolation
SUBTASK 25-62-30-810-001
A.
Self-Test Error Troubleshooting Guidelines
1)
Table 6 on page 37 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 may display a long single flash depending on software version,
which does not indicate a malfunction. Any self-test error codes will display following this
initial flash, if applicable. If there are multiple errors, there is a 0.5 to 1.0 second pause
between each error code.