Northrop weli kuma kalsoona fly-by-wire controls oo waxay haysatay farsamooyinka farsamada farsamada farsamada. Diyaaradda la soo saaray, oo la soo bandhigay 28 Janaayo 1971, ayaa lagu xayeysiiyay culeys ugu badan 40,000 lb (18,144 kg) iyo xawaare ugu badan ee Mach 2, laakiin xiisaha yar ee iibsadayaasha ajnabiga ah. Nooca ugu horreeya (lambarka taxanaha 72-156 mph) waxaa lagu soo rogay Hawthorne 4 Abriil 1974; duulimaadkeedii ugu horreeyay ee Edwards AFB wuxuu yimid 9 Juun iyadoo Henry "Hute" Choute ee kontaroolada duulimaadka 61 daqiiqo oo duulimaad ah 18,000 feet iyo xawaare ugu badnaan 610 km / saac. Markii duuliyeyaasha duulimaadka ugu horreeya ee diyaaradda ee YF-17F, General Chouteau (5 August 1974) ayaa sheegay in ay awood u leeyihiin inay ku duulaan xawaaraha ugu sarreeya ee YF-17F, waxay ku duulaan xawaaraha ugu sarreeya ee YF-17F, waxay ka duuleen heer
21ka Agoosto