INITIAL INSTALLATION MANUAL
AF INTEGRA / AF-H INTEGRA
PAGE: 31
JUN 01/2011
C. 406 and 121.5 MHz transmission test
NOTE: Transmissions tests only provide the aircraft operator with an indication
that the ELT is transmitting; however, a positive result cannot be interpreted as
meaning that the ELT meets all operational parameters.
(1)406 MHz
This test should be carried out with a COSPAS-SARSAT decoder.
Note: If a COSPAS-SARSAT decoder is not available, the coding sheet
supplied by the programmer for the beacon (or dongle) with the
corresponding CSN proves that the beacon (or dongle) is correctly
programmed. Skip to § (2) 121.5 MHz.
• Perform self-test (Press RESET and TEST on the RCP or switch ELT from
OFF to ARM).
• Check with the COSPAS-SARSAT decoder that, except for the 5th and the
6th digits, the decoded message is identical to the programmed message.
NOTE:The message transmitted during self-test sequence always begins with
FF FE D0 whereas a programmed message begins with FF FE 2F.
Example of message programmed in ELT:
FF FE 2F 96 E3 AF 0F 0F 7F DF FF 62 60 B7 83 E0 F6 6C
Example of same message decoded by Cospas-Sarsat Decoder:
FF FE D0 96 E3 AF 0F 0F 7F DF FF 62 60 B7 83 E0 F6 6C
(2) 121.5 MHz
This test must be carried out with a VHF receiver either with the aircraft VHF
receiver of with a not on-board VHF receiver.
IMPORTANT: Aircraft VHF receiver may be used only if 406 MHz test was
carried out with a Cospas-Sarsat decoder, otherwise check 121.5 MHz
using a VHF receiver (not the on-board VHF receiver) several dozens
meters away from the antenna. This ensures to validate the antenna.
• Tune VHF receiver to 121.5 MHz;
• Start transmission:
- either on ELT: ON position;
- or on the RCP: ON position (the ELT shall be in ARM position);
• Only 2 "sweep tones" are heard after 5 seconds, then the 121.5 MHz
stops.
This check shall only be conducted during the first five minutes of any UTC,
(co-ordinated universal time) hour, and restricted in duration to not more than
five seconds. Be sure to notify any nearby control tower of your intentions.
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