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The Avro Type D was an aircraft built in 1911 by the pioneer British aircraft designer A.V. Roe. Roe had previously built and flown several aircraft at Brooklands, most being tractor layout triplanes. The Type D was his first biplane.
The Kawasaki KDC-2 was a 1920s Japanese light civil transport which Kawasaki developed from its Kawasaki Army Type 88 Reconnaissance Aircraft. Two were built and flown in 1928 and flew both regular and irregular services; the last retired in 1935.
The Farman F.30A C2 was a two-seat biplane designed as a fighter in France in 1916 and powered by a single, water-cooled radial engine. It showed poor flight characteristics and only one was built, though it was modified twice. It should not be confused with the similarly named Henry Farman HF.30 of 1915, a completely different aircraft which was used in large numbers by the Imperial Russian Air Service.
The Sopwith Admiralty Types 137 and 138 were a pair of single-engine, two-seat naval biplane floatplanes, built to a British Admiralty order in 1914. They were similar in design, but having a more powerful engine the Type 138 was the larger and heavier. They were used in early torpedo dropping experiments in 1914.
The Caudron C.25 was a large, three-engined, biplane airliner, designed and built in France soon after the end of World War I. Its enclosed cabin could accommodate up to eighteen passengers.
The Caudron Type B was a 1911 development of the earliest Caudron type, the Caudron Type A, with a nacelle style fuselage and more powerful engine. Initially an equal span biplane, it was modified into a sesquiplane.
The Caproni Ca.66 was an Italian night bomber designed to reequip the post-World War I Italian Air Force. Only two examples of the four-engined biplane were built.
The Zeppelin-Lindau Gs.I, often known post-WWI as the Dornier Gs.I after its designer Claude Dornier, was a civil flying boat developed immediate post-war from a military prototype. Its passenger cabin seated six. Only one was completed, and that was eventually scuttled to keep it out of Allied hands. Another of the military prototypes was intended to have a bigger, nine seat cabin and other refinements but the Gs.II was incomplete when discovered by Allied inspectors.
The sole Kawanishi K-2 was the first specialized Japanese racing aircraft. The advanced, single-seat low-wing monoplane's first flight was in the late summer of 1921. It had a promisingly high maximum speed but a career limited by numerous minor accidents produced no victories or records.
The Itoh Emi 1 was Japan's second successful civil aircraft and the first design of Orojiro Itoh.
The Shirato Iwao-go was Japan's first civil seaplane. It was a single engine biplane floatplane and performed well enough to give a number of exhibition flights.
The Itoh Emi 3 was the first Japanese civil passenger carrying seaplane, flown in 1917 and used for commercial demonstrations and passenger flights.
The Itoh Tsurubane No.1 was a single seat aviation demonstrator and trainer biplane first flown in Japan in 1918.
The Itoh Emi 9 was a two-seat Japanese training biplane built in 1918.
The Itoh Emi 13 was a two seat Japanese trainer, designed for the Itoh flying school and introduced in two versions in 1920 and 1921.
The Itoh Emi 14 was a Japanese biplane designed in 1920 for a long distance competitive flight from Tokyo to Osaka and back, which it won. It was also successful at a contest later that summer, before suffering terminal structural failure during aerobatics a few weeks later.
The Itoh Emi 16 Fuji-go (Fuji), built in 1920, was intended as a cheap and simple general purpose civil biplane but gained publicity with exhibition flights and successful speed and altitude contests against higher-powered fighter aircraft.
The Itoh Emi 29 Taihoku-go was a 1920s Japanese civil transport with its two passengers in a enclosed cabin. It was the first of this "limousine" type to be built in Japan; the only example flew the Osaka-Tokyo route for a while.
The Itoh Emi 30 was a small, single-engined, sports biplane built in Japan in 1922. Though it attracted attention by being the smallest Japanese aircraft of its time, the sole example was mostly used as an aerobatics trainer.
The Takasou TN-6 was a Japanese single seat biplane, much modified through its relatively long career as a trainer. Its last rebuild brought it an extra seat and a change of name to Yasui TN-6 Kai.