On 23 April, ETSI Aeronauticos organised a "Clean Sky Day" at the Aeronautical School of the Universidad Politécnica de Madrid. The event was targetted towards professors, researchers and students. Carmen Alonso, Spanish representative at Clean Sky NSRG (National States Representative Group) presented the Clean Sky programme and Arturo Benito, member of Clean Sky STAB (Scientific and Technical Advisory Board), moderated the technical debate.