The Aero A.23 was a Czechoslovakian airliner of the 1920s. Aero Vodochody had produced the first Czech airliner, the A.10, four of which had served with ČSA, the national airline. The A.23, another biplane, was bigger, more powerful, and could carry more passengers.
The Hawker Nimrod is a British carrier-based single-engine, single-seat biplane fighter aircraft built in the early 1930s by Hawker Aircraft.
The Avia BH-21 was a fighter biplane designed and produced by the Czechoslovakian aircraft manufacturer Avia. First flown in January 1925, it served an important role in securing Czechoslovak national security during the Interwar period.
VL Viima, constructed by the State Aircraft Factory is a Finnish two-seat, biplane trainer used by the Finnish Air Force from the late 1930s to the early 1960s. After military service, several were released into civil use.
The Avia BH-11 was a two-seat monoplane sport aircraft designed and produced by the Czechoslovakian aircraft manufacturer Avia.
The Praga E.114 was a single-engine sport airplane, designed and manufactured by the Czechoslovakian company ČKD-Praga. Due to its light weight it was also called Air Baby.
The Rumpler D.I was a fighter-reconnaissance aircraft produced in Germany at the end of World War I. It was a conventional single-bay biplane with wings of unequal span braced by I-struts. It featured an open cockpit and a fixed, tailskid undercarriage. The upper wing was fitted with aerodynamically balanced ailerons and fuselage had an oval cross-section.
The Gloster TC.33 was a large four-engined biplane designed for troop carrying and medical evacuation in the early 1930s. Only one was built.
The de Schelde Scheldemusch was a single-seat pusher biplane designed in the Netherlands to be easy and safe to fly. It was one of the first light aircraft to use a tricycle undercarriage. Despite a sales campaign in the UK, only six were built, one being briefly tested by the RAF. A single example of a flying boat version, one of the smallest of this class, was also built.
The Short Gurnard was a single-engined two-seat biplane naval fighter, built in the United Kingdom to an Air Ministry specification in 1929. It failed to win production orders and only two flew.
The Praga E-210 was a four-seat, twin-engined touring aircraft built in Czechoslovakia in the late 1930s. It had an unusual pusher configuration. Its tail unit and undercarriage were modified significantly before World War II and after the war a more powerful version designated E-211 was flown.
The Indraéro Aéro 30 is a single seat, single engined sports biplane designed in France in the late 1960s. Only one was built.
The Praga E-40 was a single engine, two seat, biplane basic trainer, built in Czechoslovakia in the mid-1930s.
The Praga BH-44 was a prototype Czechoslovak fighter biplane of the early 1930s. Only two were built, the rival Avia B-34 being ordered instead.
The Pander E was the first indigenous Dutch training aircraft, used by clubs and also privately owned. A two-seat, single-engine biplane, 17 were built in the Netherlands from 1926 with engines of increasing power.
The Potez 26 was a single seat fighter aircraft designed and flown in France in the mid-1920s. It did not reach production.
The Caudron C.220 was a two-seat French biplane trainer. Only two were built, using different engines.
The de Marçay Limousine was a two-seat French touring biplane introduced at the 1919 Paris Aero Salon. A smaller but otherwise very similar single-seater was also there.
The Heinkel HD 20 was a twin engine, three seat German biplane built in 1926 for civil survey work.
The Laird LC-B was a three seat, single-engined biplane, built for private owners in the U.S. in the late 1920s and offering a variety of engines. About 35 had been built before production ceased in the mid-1930s. Two have been restored to flight.