ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ELT 1000 (P/N: A3-06-2749-1)
Y1-03-0259 Rev. U
Company Confidential
Page 30 of 62
NOTE:
This test also completes the requirement to check ELT controls by verifying operation of the
remote switch.
10)
Refer to Table 6 if the LED displays error code flashes.
P.
Antenna Test – Item 7
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 (cockpit remote switch to the “ON” position).
NOTE:
Perform this test within the first five minutes after the hour UTC.
4)
Listen for 2 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 (cockpit remote switch to the ARM position).
Q.
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)
For aircraft operating under Canadian authority, 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.
3.
Fault Isolation
A.
Self-Test
1)
The self-test checks certain critical functions in the beacon. Results of the test are displayed by a series of
indications (flash codes), where the local LED, remote switch LED and buzzer(s) activate for ½ second ON,
followed by ½ second OFF. Multiple flash codes are separated by periods of 1.0 second. If no errors are
present, a 2 second flash is presented as a “system ok” indication. This is suppressed if errors are present.
The self-test also emits a 121.5 MHz 2 cycle burst which can be monitored by an AM radio.
2)
There are two methods of performing a self-test – one for a 5-wire remote switch installation and another for
the 2-wire, as follows:
a)
5-Wire Remote Switch (2 position switch):
1.
This procedure is only performed using the 5-wire cockpit remote switch. The switch on the ELT is
similar to the 2-wire operation.
2.
Set remote switch to “ON” position for approximately 1 second, then return to “ARMED” position. Error
codes will begin to display after approximately 1 second.
NOTE:
If the ELT is left activated for longer than 2 seconds, no self-test will be performed on turn off.
