Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Airspeed AS.4 Ferry was a 1930s British three- engined 10-seat biplane airliner built by Airspeed Limited at York. Designed to meet a requirement for a pleasure flying airliner from Sir Alan Cobham (an Airspeed director), the Ferry was an unusual configuration biplane with a third engine mounted in the upper wing (it was usual to mount a third engine in the nose). The engine arrangement was designed to give the pilot a better view. Not all three engines were the same, the lower engines were de Havilland Gipsy IIs, and the upper wing had an inverted de Havilland Gipsy III.

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