name of Belgrade International Airport (also known as Dojno polje Airport). From February 1928, the aircraft owned by the first local airline Aeroput started taking off from the new airport. The airport had four long grass runways. The design for a reinforced concrete hangar that was built at the airfield was made by the Serbian scientist Milutin Milanković, better known for his theory of climate change. A modern terminal building was built in 1931, while the landing equipment for conditions of poor visibility was installed in 1936. Before World War II, Belgrade was also used as a stopover for some major air races, such as The Schlesinger African Air Race. Besides Aeroput, Air France, Deutsche Luft Hansa, KLM, Imperial Airways and airlines from Italy, Austria, Hungary, Romania and Poland also used the airport until the outbreak of the Second World War. Belgrade gained further prominence when Imperial Airways introduced inter-continental routes through Belgrade, when London was linked with India through the airport. Belgrade was linked with Paris and Breslau because CIDNA and Deutsche Luft Hansa, respectively, included Belgrade on its routes to Istanbul. By 1931, Belgrade became a major air hub being linked with regular flights with international destinations such as London, Madrid, Venice, Brussels, Berlin, Cologne, Warsaw, Prague, Vienna, Graz, Klagenfurt, Budapest, Bucharest, Sofia, Varna, Thessaloniki, Athens, Istanbul, and also intercontinental links with Cairo, Karachi and India. Starting from April 1941, German occupation forces used the airport. During 1944 it was bombed by the Allies, and in October of the same year the German army destroyed the remaining facilities while withdrawing from the country. The airport was rebuilt by October 1944 and until the end of the war was used by the Soviet Union and Yugoslavia as part of the Allied war effort. Civil transport by Yugoslav Air Force cargo planes from this airport was reinstated at the end of 1945. At the beginning of 1947 JAT Yugoslav Airlines and JUSTA took over domestic and international traffic, and from 1948 Western European airlines resumed flights to Belgrade. A constant increase in traffic and the beginning of the passenger jet era called for a significant expansion of the airport. In the meantime, a plan to build a residential and business district called Novi Beograd on the location of the airport was introduced. The officials decided therefore that a new international airport should be built near the village of Surčin to