The SF-260 was designed by the Italian, Stelio Frati. The aircraft was certified in April 1966. Twenty-seven Air Forces fly approximatley 1000 SF 260?s and the USAF has considered the aircraftfor its new EFS (Enhanced Flight Screener). Less than 100 (some new, some ex-military) have been imported to the U.S. Others have been used as fighter trainers by NATO forces.