In January 1931, construction of an aerodrome near Leningrad (Saint Petersburg's official name between 1924 and 1991 and the source of the airfield's IATA code of "LED") commenced and was completed on 24 June 1932, with the first aircraft arriving at 17:31 that day, after a two-and-a-half hour flight from Moscow carrying passengers and mail. This aerodrome was at first named Shosseynaya Airport, the name coming from the nearby Shosseynaya railway station. Soon after, the airport opened regular flights to Petrozavodsk, Pudozh, Arkhangelsk, and Murmansk. In 1936, a foundation for a new terminal was laid out. Leningrad's airport was also provided with new G-2s and PS-84s. In 1941, a new completely commercial passenger route between Moscow and Leningrad was opened; before it was a mixed passenger-mail route. Construction of the new terminal thrived between 1937 and 1941. The architects of the new three-story terminal were Aleksandr Ivanovich Gegello and N.E. Lansere. Construction was abruptly put on hold in July 1941, one month after Nazi Germany's invasion of the USSR on 22 June 1941. The airport was the front line in the German Siege of Leningrad. There were no flights between 1941 and 1944. The nearby Pulkovo hills were occupied by the Germans and were used by German long-range artillery for daily bombardments of Leningrad. The airport was cleared of the Germans in January 1944, and cargo and mail flights were resumed after the runways were repaired in 1945. In February 1948, after the damage was completely repaired, the airport resumed scheduled passenger flights. In 1949, there were scheduled flights to 15 major cities of the USSR, and 15 more short-range flights within north-western Russia. In 1949, Shosseynaya Airport recorded a passenger traffic rate of 6,305,333 tons of mail, and 708 tons of cargo. In 1951, the construction of the new terminal was complete. In the mid-1950s the new extended runway was completed, allowing the airport to handle larger aircraft such as Ilyushin-18 and Tupolev-104. In that same time period, the use of jet engine planes began in Shosseynaya Airport. On 15 March 1959, the USSR-42419 Tu-104 was the first commercial jet airplane to take off from the Shosseynaya Airport. In the early 1960s, modern regional airplanes such as the An-24 and Yak-40 began to appear in the airport. Flights to Vladivostok began to emerge in the flight lists. ICAO category 1 standards were implemented in 1965, making way for international operations. By the late 1960s, over 60 airlines had flights to and from Leningrad airport. On 8 February 1971, Shosseynaya was awarded the Order of the October Revolution. The airport was renamed Pulkovo Airport on 24 April 1973. In May 1973, the new Pulkovo 1 terminal was opened. The famous 5-cup Pulkovo 1 was designed by Alexandr Zyk. The 5 cups on top were put intentionally to give the terminal a more spacious feeling and allow more natural sunlight to pass through. This terminal is regarded as a masterpiece of Soviet postmodern architecture. Pulkovo 1 was a domestic-only terminal. Domestic air traffic increased by approximately 45% every decade between the 1970-1990s. The old pre-war building of the airport was renamed Pulkovo 2 and the terminal was exploited for international flights only. On 11 April 1986, the new departure and arrival zones for the international terminal were completed, doubling the passenger traffic rate capacity of Pulkovo 1. In 1990, Pulkovo Airport reached its passenger traffic rate peak of over 10,000,000 passengers. After the dissolution of the Soviet Union, the number of passengers declined. In 2005, Pulkovo Airport gained independence as it separated from the Pulkovo Aviation Enterprise. Also in 2005, Rosavia declares that Pulkovo Airport (still state-owned) is to have an open tender on an investment project of the new terminal construction. This allowed it to sell shares and begin working on investment bidding projects.