ACR&Artex B406-4 - Manual (Page 46)

ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
B406-4 (453-5004)
25-62-03
Page 46 of 87
JUN 20/13
SUBTASK 25-62-03-750-012
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 25-62-03-750-013
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.