3.5 Programming
The 406ELT has a great deal of embedded firmware that is set at production. There is no open
source code for that information. Read only functions have been removed from the software
code. Only the country code can be re-programmed using a GUI based program that is available
to dealers only. The HEX code can never be changed in the field, or parameters that ensure the
safe operation of the ELT.
The 406 ELT and all its variants are pre-programmed at the factory during the manufacture. The
programming includes the use of the long message format. All units are delivered with
STANDARD LOCATION PROTOCOL. This allows for additional information to be
transmitted to Cospas Sarsat.
The United States accepts the following protocols:
Serial Number
Tail Number
24-Bit Aircraft Address
Aircraft Operator Designator/Serial Number
Latitude and Longitude
All countries may not accept the same protocols. Check with your local authorities for their
specific protocol regimens.
For a complete discussion of ELT programming protocols please see COSPAS-SARSAT
documents G.005 and T.001 available at www.cospas-sarsat.org
.
Contact your dealer or the manufacturer for any programming updates you require.
3.6 Certification
• The 406 ELT has been certified by Cospas/Sarsat for operation with the world wide
detections system by complying with COSPAS-SARSAT T.001 and TESTED TO T.007
• The FAA has certified that the 406 ELT meets the requirements of TSO 126a –
mandatory automatic ELT requirements
• ETSO 2C126 (Pending)
• Transport Canada (Pending)
• Industry Canada (IC:406AF) (Pending)
• 47 CFR Part 87 (FCC requirements) The FCC does not issue certificates for ELTs
• 47 CFR § 2.902, the ELTs were tested using the Verification Method.
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