ABC is the first aircraft is classified as a commercial aircraft with four engines were designed by Igor ski courses, flight sim first December 10 1913, and in 1914 it has test February 25, with 16 passengers and fly-back. Routes between St. Petersburg-Kiev between 21 to June 23 in the same year.The first plane is provided in a commercial airliner.Sikorsky Ilya Muro Metz
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