As stated by the EU Press Room, “The European Commission decided today to refer Greece to the European Court of Justice for failure to respect EU legislation on the establishment of a national supervisory authority in the context of the single European sky.The single European sky framework regulation [1] entered into force in April 2004. It separates the provision of air navigation services on the one hand and the supervision and regulation of these services on the other hand. Member States are required to create or establish an independent national supervisory authority to assume the different tasks identified in EU-legislation including the certification of air navigation service providers and the on-going compliance oversight. Up to now, Greece has failed to fully establish an independent authority.The Commission sent two reasoned opinions to Greece in December 2005 (IP/05/1609) and in June 2006 without receiving satisfactory replies.Further Information on the single European sky, and in particular on national supervisory authorities is available on:http://ec.europa.eu/transport/air_portal/traffic_management/nsa/index_en.htm.[1] Regulation (EC) No 549/2004 of the European Parliament and of the Council of 10 March 2004 laying down the framework for the creation of the single European sky (OJ L 96, 31.03.2004, p. 1)”