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- W149557361 abstract "The U.S Commercial Aircraft Industry experienced its initial period of rapid growth after the passage of the Kelly Act of 1925 and the Air Commerce Act of 1926. The Air Commerce Act provided, among other things, for the certification of aircraft types in order to promote greater safety. The first Approved Type Certificate (ATC) given under the Air Commerce Act was issued for the Buhl Airster C-3Am, a three-seat, open cockpit biplane, in 1927. By the end of 1931, more than 450 ATCs had been issued to 79 differently named aircraft manufacturers. Of these, 104 aircraft types were land planes with four or more seats intended for use as commercial transports.1 Most of the manufacturers were unable to produce an economically successful aircraft in sufficient quantities to permit them to stay in business, and thus many existed from the aircraft manufacturing market. Among the early causalities were now unfamiliar aircraft manufacturers: Buhl, Alexander, American, Kreutzer, Hamilton, Bach, Ogden, Emsco, and Cunnigham-hall.2 By 1932 there were 23 different types of planes representing nine different manufacturers in use by the then principal carriers in the U.S., among them were some legendary manufacturers such as Fokker, Ford, Boeing, Douglas, Fairchild, Stinson, Lockheed, Curtis and Northrop. In 1933, only five manufacturers supplied new aircraft to the airline industry." @default.
- W149557361 created "2016-06-24" @default.
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- W149557361 date "1999-01-01" @default.
- W149557361 modified "2023-09-27" @default.
- W149557361 title "Theories and Measurement of Productivity and Technological Change" @default.
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- W149557361 doi "https://doi.org/10.1007/978-1-4615-5031-0_5" @default.
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