 This effort would never progress beyond the prototype stage before being eclipsed by more capable aircraft and ultimately terminated.During 1947, independent of the N-20 effort, Swiss firm Flug- und Fahrzeugwerke Altenrhein (FFA) decided to embark on their own independent fighter jet development programme.Designated "P-16", it was reportedly conceived as being a supersonic-capable fighter-bomber that would be capable of deployment from the more remote and compact alpine bases.