ABC was the first plane was classified as a commercial aircraft. 4 engine was designed by Igor, GI, test flying the first course on 10 December. In 1913 and on 25 February. 1914 can fly test with passengers 16 people and fly - back to the route between St. Petersburg - Kiev. The 21 to 23 June, in the same year.The first plane is provided in a commercial airliner.Sikorsky Ilya Muro Metz was the first aircraft to be classified as. Commercial aircraft with four engines.were designed by Igor Sikorsky. First flew on December 10.
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