Special Mission Oct16.qxp_Finance 20/09/2016 10:13 Page 1
FLIGHT DEPARTMENT T AVIONICS
ADS-B Where We Stand Now
Ken Elliott addresses the ‘Ins’ and ‘Outs’ of ADS-B, covering the mandate, its status, the basic differences of ADS-B In and ADS-B Out, Enhanced ADS-B remote service, and more…
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Ken Elliott is a highlyrespected industry authority on avionics as a member of the NextGen Advisory Council sub-committee and Technical Director, Avionics at Jetcraft. Contact him via ken.elliott@jetcraft.com or www.jetcraft.com
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s a refresher, Automatic Dependent Surveillance - Broadcast mode out (ADS-B Out) automatically broadcasts an aircraft’s situational data, including its position 1) to other aircraft directly; 2) rebroadcast via ground stations to other aircraft; and 3) both direct and rebroadcast, as Traffic Information Service Broadcast (TIS-B) to air traffic control. Its purpose is to complement ground radar, providing equivalent or better data even where radar coverage does not exist. Via satellite, ADS-C (as Contract) provides oceanic broadcast while work is underway to provide ADS-B worldwide, both terrestrially and oceanic, without the
AVBUYER MAGAZINE – October 2016
www.AVBUYER.com
need for ground stations. Not least, ADS-B is becoming a useful search and rescue tool, because of its aircraft tracking capability and all that implies. Apart from its current continental radar-like coverage, ADS-B Out: • Improves ATC’s ability to handle flight level and route change requests, mid-flight; • Facilitates continuous descents and climbs, saving time and fuel; • Needs no voice-based position reports; • Reduces the work of ATC, in turn improving the ability of ATC to support flights in progress. ADS-B In, meanwhile, adds the capability of the Aircraft Index see Page 143