The 105 was designed as a replacement for the Swedish Air Force's de Havilland Vampires. Saab developed it privately in the early 1960s, with it first flying on 29 June 1963. Four years later, it entered service as a military trainer under the designation SK 60. Forty 105s were also imported to Austria, where the were called the 105 OE. The aircraft continues to see use today, and even serves in several display teams. A total of 192 were built.