Among the first units to be formed at Yelahanka, then RAF station was No. 225 Group Communication Flight in 1942. Initially formed as a conversion and training squadron at Agra in 1948, the Units moved over to Begumpet in 1957 and was renamed as Transport Training Wing (TTW). In 1963 after the Sino -Indian conflict, the necessity for expanding training on transport aircraft became imperative. To facilitate this requirement; existing TTW was retained at Begumpet and No.2 TTW was established at Yelahanka, a suburb of Bangalore. Here, an airfield of world war II vintage was already in existence. This deserted airfield was recommissioned after necessary repairs on August I, 1963 and began functioning under the command of Gp Capt PL Dhawan. On January 1, 1968 both the TTW s were merged to form a single TTW at Yelahanka. Later, TTWs was renamed as Air Force Station, Yelahanka. Initial conversion courses were conducted on Dakota MkIII and MkIV. From Jan 1975 the HS-748 replaced the Dakota and the Course was renamed as Transport Conversion Course (TCC). An-32 was inducted in 1986 and Do-228 in 1996.