The European Commission has adopted a new Regulation on “voice channel spacing”. This Regulation allows an increase in the number of frequencies available for air to ground communications in the areas where air traffic management is used. Consequently, more interoperability between systems in Europe will be achieved. This legal instrument supports the coordinated introduction in the air and on the ground of a more efficient technical solution in air navigation throughout Europe, consisting of a reduction in the channel spacing from 25 to 8.33 KHz. The new legislation complements three regulations recently adopted with the aim of modernising air traffic management systems within the “Single European Sky”. The “Single European Sky” is a unified European system created to improve industry’s efficiency, enhance safety and reduce carbon dioxide emissions.