In 1979, Messerschmitt-Bölkow-Blohm (MBB) and British Aerospace (BAe) presented a formal proposal to their respective governments for the ECF, the European Collaborative Fighter or European Combat Fighter.
En 1979 Messerschmitt-Bölkow-Blohm (MBB) e British Aerospace (BAe) presentaron unha proposta formal aos seus respectivos gobernos para o ECF, o European Collaborative Fighter ou European Combat Fighter (caza colaborativo europeo ou caza de combate europeo).