the 1950s and they remained in service until 1961. Variants S-49A - mixed construction and Klimov M-105 engine (45 built) S-49B - planned version powered by a Daimler-Benz engine; unbuilt. S-49C - all-metal construction and Hispano-Suiza 12Z engine (113 built) Operators - Yugoslav Air Force Ikarus S-49A - 46 aircraft (1949–1957) 117th Fighter Aviation Regiment (1950–1953) 204th Fighter Aviation Regiment (1950–1953) 107th Fighter Aviation Regiment (1953–1957) Training Squadron of 44th Aviation Division (1953–1954) Ikarus S-49C - 112 aircraft (1952–1961) 116th Fighter Aviation Regiment (1952–1960) 185th Fighter Aviation Regiment (1953–1956) 40th Fighter Aviation Regiment (1955–1959) 109th Fighter Aviation Regiment (1956–1960) 88th Fighter Aviation Regiment (1957–1959) Training Squadron of 39th Aviation Division (1953–1959) S-49C Aircraft on display Serbia Museum of Aviation (Belgrade) in Belgrade Both variants of S-49A and C are on display. Specifications (Ikarus S-49C) See also References Bibliography 1940s Yugoslav fighter aircraft Ikarus aircraft Low-wing aircraft Single-engined tractor aircraft Aircraft first flown in 1949