ENAIRE is the air navigation manager in Spain, certified for the provision of en route, approach and aerodrome control services. As a public corporate entity attached to the Spanish Ministry of Public Works, it is responsible for air traffic control, aeronautical information and the Communication, navigation and surveillance networks - these are all necessary so that air companies and their aircraft can fly safely, fluidly and in an organised format within Spanish airspace. By volume of air traffic, ENAIRE is the fourth largest air navigation service provider in Europe, with approximately 2 million flights per year. ENAIRE manages 2.2 million square kilometres of airspace from five air control centres (Barcelona, Canary Islands, Madrid, Palma de Mallorca and Seville) and 21 control towers. ENAIRE controls a complex airspace of over 2,000,000 sq. km, including one continental area, one oceanic. It also handles flights entering Europe from America and Africa, as Spain is the port of entry linking traffic from these destinations with Europe, Germany, France and the United Kingdom. ENAIRE adapts to the seasonal nature of air traffic in Spain, where there is a considerably larger number of flights during the summer months. Spain is recorded to have the third-largest number of tourists in the world. ENAIRE participates in projects of the European Union related to the implementation of the Single European Sky, such as the group A6 and the European joint undertaking iTEC (with Indra and the air navigation providers NATS (United Kingdom), DFS (Germany), LVNL (Netherlands), Avinor (Norway), PANSA (Poland) and Oro Navigacija (Lithuania). ENAIRE is also a full member of CANSO. ENAIRE owns 51% of the capital of Aena S.A., the world's largest airport manager, with a network of 46 airports and 2 heliports in Spain. These include Madrid-Barajas, Barcelona-El Prat, Palma de Mallorca and Málaga-Costa del Sol. This network records more than 207 million passengers per year. In addition, Aena S.A. participates in the management of 15 further airports in the United Kingdom, Colombia and Mexico. Duties Under the Act 09/2010, ENAIRE is the company designated by the State for the supply of air traffic services in the en-route and approach phases. ENAIRE performs the following air navigation functions: The planning, management, coordination, operation, maintenance and administration of air traffic, the services of telecommunications and aeronautical information, as well as the infrastructure, facilities and communications networks of the air navigation system. The aim is to ensure that