ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-2 (453-5000), C406-2HM (453-5001)
570-5000 Rev. U
Company Confidential
25-62-11
Page 33 of 66
SUBTASK 25-62-11-750-012
Q.
Installed Transmitter Test
–
Item 6
CAUTION:
DO NOT ALLOW THE DURATION OF THIS TEST TO EXCEED 5 SECONDS. THE ELT
WILL TRANSMIT A 406 MHZ SIGNAL AFTER THE ELT IS ACTIVATED FOR
APPROXIMATELY 47 SECONDS. THE COSPAS-SARSAT SATELLITE SYSTEM WILL
CONSIDER THE 406 MHZ TRANSMISSION TO BE A VALID DISTRESS SIGNAL.
1)
Reinstall the ELT in accordance with SUBTASK 25-62-11-410-001 on page 53.
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 a receiver, usually the aircraft transceiver, to 121.5 MHz.
NOTE:
An AM radio may be used to receive the signal.
5)
Activate the ELT by placing the cockpit remote switch in the “ON” position. The LED will begin
flashing continuously.
6)
Listen for 3 audible sweeps on the receiver, which takes about 1 second.
7)
Verify the buzzer sounds immediately upon activation.
8)
Return the cockpit remote switch to the “ARM” (OFF) position while paying close attention to LED
activity when the ELT enters the “ARM” 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.
9)
Refer to Table 6 on page 35 if the LED displays a series of error code flashes.
SUBTASK 25-62-11-750-013
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 pl
acing the cockpit remote switch in the “ARM” position.
SUBTASK 25-62-11-750-014
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.
