Universal Weather and Aviation master flight planner Jason Davidson provided a comprehensive update of worldwide automatic dependence surveillance-broadcast (ADS-B) mandates in a recent post. The update summarizes current ADS-B Out mandates, as well as those that are in the process of being implemented. So far, no country has mandated ADS-B In capability, although more aircraft are equipping with ADS-B In, which provides improved traffic information and other benefits.
The U.S. mandate hasn’t changed since it came into effect on Jan. 1, 2020, requiring ADS-B Out for all aircraft flying in ADS-B-mandated airspace. The U.S. remains the sole country allowing either 1090ES or 978UAS equipment. The 978UAS ADS-B In equipment gives pilots access to free weather and traffic information but is available only for aircraft that do not fly above FL180.
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