7700 and ADS-B

[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;

[Ian W]

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

[givdrvr]

perfect...thank you!

[ahramin]

Your ADS-C will have an emergency mode. In non-radar airspace it's a good idea to turn it on if you're in an emergency / divert situation.