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.
Transcontinental Air Transport Transcontinental Air Transport (T-A-T) was an airline founded in 1928 by Clement Melville Keys that merged in 1930 with Western Air Express to form what became TWA. Keys enlisted the help of Charles Lindbergh to design a transcontinental network to get government airmail contracts. Lindbergh established numerous airports across the country in this effort.