Sikorsky Aircraft and it became a part of [[United Aircraft and Transport Corporation]] (now [[United Technologies Corporation]]) in July of that year. [[File:Sikorsky Aircraft Corporation ad Model S-42 Clipper Flying Boat 1937.jpg|thumb|left|upright|Advertisement for [[Sikorsky S-42]] Clipper flying boat from 1937]] In the United States, Igor Sikorsky originally concentrated on the development of multi-engined landplanes and then amphibious aircraft. In the late 1930s, sales declined and United Aircraft merged his division with [[Vought Aircraft]]. He then began work on developing a practical helicopter. After first flying the [[VS-300]] he developed the [[Sikorsky R-4]], the first stable, single-rotor, fully controllable [[helicopter]] to enter full-scale
Sikorsky Memorial Airport The airport was originally Avon Field, a racetrack where aircraft landed on the grass infield. It was the site of the country's first air show held in 1911, on the grounds of what is now St. Michaels Cemetery. It became known as Mollison Field after Captain Jim Mollison's crash landing there in 1933 during an attempt to fly across the Atlantic. The City of Bridgeport purchased the airport in 1937, after which it became Bridgeport Municipal Airport. In 1972 it was rededicated as the Igor I. Sikorsky Memorial Airport, honoring the airport's most famous tenant, Igor Sikorsky, who selected Stratford