The Sikorsky S-40 was an American sesquiplane amphibious flying boat built for an airline founded in what year?
Sikorsky S-40 The Sikorsky S-40 was an American sesquiplane amphibious flying boat built by Sikorsky in the early 1930s for Pan American World Airways.
Kamov Kamov is a Russian rotorcraft manufacturing company, founded by Nikolai Ilyich Kamov, who started building his first rotary-winged aircraft in 1929, together with N. K. Skrzhinskii. Up to the 1940s, they created many autogyros, including the TsAGI A-7-3, the only armed autogyro to see (limited) combat action.