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  2. Automatic Dependent Surveillance–Broadcast - Wikipedia

    en.wikipedia.org/wiki/Automatic_Dependent...

    Conceptual of the ADS-B system, illustrating radio links between aircraft, ground station and satellite. Automatic Dependent Surveillance–Broadcast (ADS-B) is an aviation surveillance technology and form of electronic conspicuity in which an aircraft determines its position via satellite navigation or other sensors and periodically broadcasts its position and other related data, enabling it ...

  3. Key safety system off in Army helicopter that collided with ...

    www.aol.com/news/key-safety-system-off-army...

    ADS-B is an advanced surveillance technology to track aircraft location. Cruz noted the helicopter had a transponder so it would appear on radar but ADS-B is significantly more accurate.

  4. Traffic collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Traffic_collision...

    Automatic dependent surveillance – broadcast (ADSB) messages are transmitted from aircraft equipped with suitable transponders, containing information such as identity, location, and velocity. The signals are broadcast on the 1090 MHz radio frequency. ADS-B messages are also carried on a universal access transceiver (UAT) in the 978 MHz band.

  5. Investigation into DC plane and helicopter collision looking ...

    www.aol.com/investigation-dc-plane-helicopter...

    The American Airlines flight was broadcasting an ADS-B signal, which provides far more information to air traffic control. “ADS-B is worlds beyond the standard Mode S data.

  6. Plane crash: NTSB says Army helicopter flying at 300 feet at ...

    www.aol.com/plane-crash-ntsb-says-army-232900751...

    (The Center Square) – The National Transportation Safety Administration says the Army Black Hawk helicopter that collided with an American Airlines jet over the Potomac River last Wednesday was ...

  7. Aviation transponder interrogation modes - Wikipedia

    en.wikipedia.org/wiki/Aviation_transponder...

    Upon interrogation, Mode S transponders transmit information about the aircraft to the SSR system, to TCAS receivers on board aircraft and to the ADS-B SSR system. This information includes the call sign of the aircraft and/or the aircraft's permanent ICAO 24-bit address (which is represented for human interface purposes as six hexadecimal ...