Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Samfurin ya fara tashi a ranar 6 ga Mayu, 1935, ya kai 281 mph (452 km / h) a 10,000 ft (3,000 m) yayin gwajin gwajin farko. A ranar 27 ga Mayu, 1935, an tashi samfurin zuwa Wright Field, Ohio, don yin gasa a cikin jirgin saman USAAC don sabon jirgin saman soja guda ɗaya, amma an jinkirta gasar saboda shigarwar Seversky ya fadi a kan hanyarsa. Curtiss ya yi amfani da jinkiri don maye gurbin injin da ba shi da aminci tare da Wright XR-1820-39 Cyclone wanda ke samar da 950 hp (710 kW) da kuma sake yin fuselage, ƙarawa da windows na baya na baya don inganta hangen nesa. An sanya sabon samfurin samfurin 75B tare da sigar R-1670 wanda aka sanya shi samfurin 75D. A ƙarshe ya tashi a watan Afrilu na shekara ta 1936. Abin takaici, sabon injin ya kasa isar da ikon da aka ba shi kuma jirgin ya kai 285 mph (459 km / h).  Tambaya: A wace shekara ne samfurin ya tashi?
1936 shekara