ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
B406-4 (453-5004)
Page 35 of 70
25-62-03
7)
Activate the ELT by placing the cockpit r
emote switch in the “ON” position. The panel light will illuminate
and stay on steady.
NOTE:
The LED on the ELT will begin flashing continuously when the ELT is activated.
8)
Listen for 3 audible sweeps on the receiver, which takes about 1 second.
9)
Verify the buzzer sounds immediately upon activation.
10)
Return the remote switch to the “OFF” position while monitoring the ELT LED activity when the ELT
enters the “OFF” condition.
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.
11)
Refer to Table 6 on page 37 if the ELT LED displays a series of flashes.
SUBTASK 25-62-03-750-013
R.
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 25-62-03-750-014
S.
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.