OpenSky report 2016: Facts and figures on SSR mode S and ADS-B usage

This paper provides up-to-date statistics on SSR Mode S and 1090ES ADS-B usage from the OpenSky Network. By analyzing the large host of real-world data collected by OpenSky, we provide insights on the current composition of Mode S downlink communications, aircraft equipage, interrogation patterns and much more. We publish up-to-date, empirically validated numbers on the status of the ongoing ADS-B deployment based on data collected over large areas in Europe, North America, and New Zealand, and categorize these aircraft by incorporating publicly available data sources.