Originally Posted by
givdrvr
Does anyone know if there is an ADS-B UAT/1090 installation configuration that in an emergency requires anything along these lines...
c) set transponder to Code 7700 and, if applicable, select the appropriate emergency mode on ADS-B
and/or ADS-C;
You should read this
http://www.faa.gov/documentLibrary/m...C%2020-165.pdf
Emergency Status. The installation must provide a means for the pilot to enter the emergency status of the aircraft. Although TSO-C166b and TSO-C154c identify multiple emergency codes, only the codes for general emergency, no communications, and unlawful interference are required to be available for broadcast. It is acceptable to base the ADS-B emergency status on the emergency status code input into the transponder (i.e. Mode 3/A codes 7500, 7600, and 7700.) See paragraph 3-7 c (5) for information on single point of entry of the emergency status.
If you search the document using 'emergency' then you get multiple hits. "ADS-B" in the document seems to apply to both UAT and 1090ES