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The Sikorsky S-29-A was a twin-engine sesquiplane airliner, first flown in 1924. It was the first aircraft that aviation pioneer Igor Sikorsky designed and built after coming to the United States, hence the special "-A" suffix signifying "America". The aircraft made many successful long-range flights, most of which Sikorsky piloted himself. The S-29-A claims a number of "firsts" in aviation, including the first twin-engine aircraft capable of maintaining altitude on one engine, the first aircraft to broadcast a radio musical program in-flight, in 1925 and in 1926 the first aircraft to display a motion picture in flight. The S-29-A was also one of the first aircraft to make use of an airstair door, located on the starboard side of the fuselage.
Operational history
On April 23, 1925 the S-29-A completed its first revenue flight from New York to Washington D.C. The cargo consisted of two Baby Grand pianos, one of which was delivered to the first lady Grace Coolidge. On May 8, 1925 a regular passenger service between New York and Yorktown Virginia began, and the S-29-A was officially christened the Yorktown at Bolling Field in Washington, DC. The aircraft made over 300 successful flights, but with the airline industry only just emerging in the United States at that time, the S-29 failed to attract the customers that Sikorsky had hoped.