During the war, 27 pilots became casualties, of whom 10 were killed, including the Squadron Commander and both Flight Commanders, and Franjo Kluz, first partisan pilot and national hero of Yugoslavia.
Franjo Rački | Franjo Kuhač | Franjo Vladić | Franjo Hanaman | Franjo Krežma | Franjo Komarica | Franjo Kluz | Franjo Iveković | Franjo Gregurić | Franjo Arapović |
It was originally produced in the Franjo Kluz factory in Inđija, but production was moved to Belgrade in 1951.