28th Air Detachment (Bulgarian: Авиоотряд 28) is an agency, subordinated to the Bulgarian government, which provides air transport for the President, Prime Minister and other high-ranking state officials.
After World War II, Bulgaria has no civil aviation and airplanes to service senior state administration and implementation of specific government tasks. After 9 September 1944 and the end of the war the only aircraft in the Bulgarian army - the bomber Heinkel He-111 - is converted into a passenger wing. The need for civil aviation gets more obvious in 1946 when the Bulgarian government delegation had to participate in international meetings related to the end of World War II. Lisunov Li-2 board 41 was delivered by Soviet Union military to Bulgaria as a transport aircraft. It was assigned to 16th Transport Air Base in Sofia to be used by the government, refurbished with a sofa and radio receiver.
In 1956 two new government aircraft Ilyushin Il-14 were delivered. Meanwhile almost all governmental flights were executed by planes and crews sent by the USSR for the exact purpose.