The SAI.7 racing aircraft first flew in 1939. Wartime advanced trainer and light fighter variants were unsuccessful, but 145 examples were built of the postwar S.7 trainer. Only two protypes were produced of the more powerful Super S.7, or Supersette. Before becoming the first Super S.7, this airframe flew as the S.7 Freccia, fitted with a 45 degrees swept wing and nosewheel gear to help design the Ambrosini Sagittario jet.