The Focke-Wulf Fw 44 Stieglitz ("Goldfinch") is a 1930s German two-seat biplane. An early design by Kurt Tank, it was produced by the Focke-Wulf company as a pilot training and sports flying aircraft. It was also eventually built under license in several other countries.
The Albatros L 59 was a single-seat German utility aircraft of the 1920s. It was a single-engine low-wing cantilever monoplane with large, spatted wide track undercarriage attached, unusually for the time not to the fuselage but to the wing roots. The whole aircraft was covered in 3-ply.
The Arado S I was a biplane trainer built in Germany in 1925. The first of three prototypes was powered by a Bristol Lucifer radial engine, while the other two Arado S.Ia aircraft were fitted with the Siemens-Halske Sh 12. The Siemens-Halske Sh 11 powered the Arado S III, a virtually identical aircraft of which only a single prototype was constructed and sold to Turkey.
The Siemens-Schuckert D.III was a German single-seat fighter built by Siemens-Schuckert Werke. The D.III was a development of the earlier Siemens-Schuckert D.IIc prototype. The D.III was an (nearly) equal-span biplane powered by a 160 hp (119 kW) Siemens-Halske Sh.III bi-rotary engine. Idflieg placed an order for 20 aircraft in December 1917, followed by a second order of 30 aircraft in February 1918.
The Dornier Libelle, also designated Do A, was a German open-cockpit, all-metal, parasol wing, monoplane flying boat aircraft, with partly fabric-covered wings. A landplane version, built without sponsons and fitted with a fixed tailwheel undercarriage was produced as the Dornier Spatz.
The Focke-Wulf A.16 was a German three/four passenger light transport monoplane designed by Heinrich Focke and Georg Wulf and was the first design built by the newly formed Focke-Wulf company.
The Fairchild 22 Model C7 was an American two-seat touring or training monoplane designed and built by the Kreider-Reisner division of the Fairchild Aircraft Corporation at Hagerstown, Maryland.
The General Aircraft ST-18 Croydon was a 1930s British cabin monoplane built by General Aircraft Limited.
The Focke-Wulf S 2 was a trainer aircraft built in Germany in the late 1920s. It was a conventional parasol-wing monoplane with fixed tailskid undercarriage. The pilot and instructor sat side by side in an open cockpit. Only a single example was built.
The Bayerische Flugzeugwerke M 18, was an airliner, produced in Germany in the late 1920s.
The Beriev MDR-5 (sometimes Beriev MS-5) was a Soviet long-range reconnaissance/bomber flying boat prototype developed by the Beriev design bureau at Taganrog. It did not enter production as the rival Chyetverikov MDR-6 was preferred.
The Dietrich DP.II Bussard was a 1920s German two-seat training biplane designed by Richard Dietrich and built by the Dietrich-Gobiet Flugzeugwerke as Kassel.
The Dietrich DP.VII was a 1920s German two-seat touring monoplane designed by Richard Dietrich and built by the Dietrich Flugzeugwerke in Kassel, Germany.
The Avia 57 was a 1930s Czechoslovak 14-passenger commercial transport, designed by Robert Nebesář and built by Avia. The type was not a success.
The Yatsenko I-28 was a 1930s Soviet single-seat fighter designed by Vladmir Yatsenko and first flown in 1939. The I-28 was a low-wing cantilever monoplane of mixed construction powered by a 900 hp (671 kW) Tumansky M-87 radial piston engine. It had an enclosed single-seat cockpit with a rearwards sliding canopy. The wing had an inverted-gull shape to reduce the length of the retractable main landing legs. The prototype was destroyed shortly after the first flight but an order was placed for 30 production aircraft. Also ordered was a prototype of an attack version, the I-28Sh. Although the first five production aircraft were completed the programme was cancelled in early 1940.
The Focke-Wulf GL 18 was a 1920s German light transport monoplane, designed and built by Focke-Wulf.
The Aviméta 132 was a French three-engined monoplane transport for eight-passengers designed and built by Aviméta. It was the first French all-metal aircraft but only one aircraft was built.
The Udet U 11 Kondor was a German four-engined airliner designed and built by Udet Flugzeugbau, only one was built.
The Yakovlev AIR-3 was a 1920s Soviet two-seat general aviation monoplane designed and built by Aleksandr Sergeyevich Yakovlev.
The Udet U 1 was the first of a line of small, low-powered, low wing, cantilever monoplanes built in Germany in the early 1920s.
