first three perform technical regulation; the latter, economic regulation. In terms of physical structure, ANAC has several buildings spread throughout Brazil, mainly its headquarters in Brasília - DF, and the four regional units: Rio de Janeiro, São Paulo, Porto Alegre and Recife. It also has a unit in São José dos Campos, a training center at Jacarepaguá Airport and a civil aviation office in Curitiba. Responsibilities The Brazilian civil aircraft fleet is one of the largest around the world, with more than 10,000 units flying. The executive helicopters fleet is the second one, most of them operating in the city of São Paulo. ANAC is the agency that regulates their concessions and operations. ANAC also regulates the concessions of Brazilian airlines, such as TAM Airlines, VRG Airlines (which includes the brands Gol Airlines and Varig), Azul Brazilian Airlines, Avianca Brasil, TRIP Linhas Aéreas, Passaredo Linhas Aéreas, among others. ANAC also regulates the maximum number of operations (slots) in some airports due to capacity limitations. Presently they are: São Paulo-Congonhas Airport with 30 operations an hour São Paulo/Guarulhos-Gov. Franco Montoro International Airport with 45 operations an hour. Rio de Janeiro-Galeão/Antonio Carlos Jobim Internanational Airport Rio de Janeiro-Santos Dumont Airport Brasília-Pres. Juscelino Kubitscheck International Airport On March 16, 2010, ANAC announced that similar slot restrictions, particularly on peak hours will be implemented in 2010 at the following airports: Belo Horizonte/Confins-Pres. Tancredo Neves International Airport Brasília-Pres. Juscelino Kubitscheck International Airport (Implemented) Campinas-Viracopos Airport Cuiabá-Marechal Rondon International Airport Fortaleza-Pinto Martins International Airport Salvador-Dep. Luís Eduardo Magalhães International Airport Significant events The 2006–07 Brazilian aviation crisis embroiled the ANAC, and the courts subsequently condemned it along with seven other parties. On 17 June 2007, :pt:Voo TAM 3054 crashed with all humans lost. :pt:Denise Abreu was then the head of the ANAC, and as such was constituted by the court a civil party, due in part to the autonomous legal status of the ANAC. In May 2009, Air France Flight 447 was lost at sea. ANAC was the Brazilian agency to which fell the investigation. On 27 November 2016, ANAC did not approve the flight plan proposed by the Bolivian company Lamia to transport The Chapecoense Brazilian football team in a direct chartered flight from Brazil to Medellin, Colombia. ANAC based its decision on the international aeronautical legislation, according to which a chartered flight must be operated by a company based either in the country of