That same year, Boeing created an airline named Boeing Air Transport, which merged a year later with Pacific Air Transport and the Boeing Airplane Company. The first airmail flight for the airline was on July 1, 1927.Boeing History—Beginnings... Mail and Boa abroad Retrieved November 5, 2010. In 1929, the company merged with Pratt & Whitney, Hamilton Aero Manufacturing Company, and Chance Vought under the new title United Aircraft and Transport Corporation. The merger was followed by the acquisition of the Sikorsky Manufacturing Corporation, Stearman Aircraft Corporation, and Standard Metal Propeller Company. United Aircraft then purchased National Air Transport in 1930.
