The Aero A.12 was a Czechoslovakian biplane light bomber and military reconnaissance aircraft manufactured in small numbers shortly after World War I. Although reminiscent of the Hansa-Brandenburg-designed aircraft that Aero was building during the war under licence as the Ae.10, the A.12 was the company's own design. It is perhaps most significant as the direct descendant of the highly successful A.11 and its various derivatives. An example of the type is preserved at the Letecké Muzeum in Kbely.
The Amiot 120 was a family of French single-engine biplane bomber aircraft, built by the SECM-Amiot factory in the mid-1920s. The only series-built variant was Amiot 122 BP3 medium bomber, other known variant was Amiot 123 long-distance record plane.
The Caudron C.60 was a French two-seat biplane of the 1920s and 1930s with a single engine and a canvas-covered fuselage. The French aircraft manufacturer Caudron developed this aircraft from the Caudron C.59. It was mainly used as a trainer aircraft.
The Avia BH-26 was a two-seat armed reconnaissance aircraft built in Czechoslovakia in 1927. It was a single-bay unstaggered biplane with equal-span wings and a fixed tailskid undercarriage. Both upper and lower wings featured long-span ailerons, which were dynamically balanced by a small auxiliary airfoil mounted to the upper surface of the lower ailerons. Its design was typical of this type of aircraft built during World War I and the years following; pilot and observer sat in tandem open cockpits with the observer armed with a machine gun on a ring mount. As with many other Avia designs, the BH-26 originally had no fixed fin, only a rudder, but this was changed in service.
The Blériot 127 was a French bomber aircraft of the 1920s and 1930s, developed from the Blériot 117 escort fighter. It was a large monoplane of conventional configuration that featured open gunner's positions in its nose and at the rear of its two underwing engine nacelles. The wing airfoil was of sufficient thickness that these latter positions could be accessed from the fuselage in flight.
The Bleriot-SPAD S.51 was a French fighter aircraft developed in 1924 in response to a French Air Force requirement for an aircraft to replace their obsolete Nieuport-Delage NiD.29s.
The Blériot-SPAD S.61 was a French fighter aircraft developed in 1923. Designed by André Herbemont, the S.61 was a conventional biplane, abandoning the swept upper wing used by Herbemont in several previous designs. The prototype S.61 was evaluated by the French Air Force alongside the S.51 as a potential new fighter, but like its stablemate, was rejected. The Polish Air Force was impressed enough to order 250, as well as purchase licences for local production. The Romanian Air Force also ordered 100 aircraft. About 30 were built in Poland, by the CWL.
The Blériot-SPAD S.81 was a French fighter aircraft developed in 1923 to a requirement by the French Air Force. It was flown competitively against the Dewoitine D.1 and was selected over that aircraft due to the Dewoitine's more radical design, leading to an order for 80 aircraft. The S.81 was a single-bay biplane of conventional configuration with I-shaped interplane struts and lacking Herbemont's usual swept upper wing. It featured a wooden fuselage of monocoque construction and metal wings skinned in fabric. Production versions differed from the prototypes in having a lengthened fuselage and larger tail fin.
The Farman F.120 and its derivatives were a family of multi-engine airliners and bombers of the 1920s built by the Farman Aviation Works in France.
The FBA 19 was a flying boat bomber developed in France in 1924 by Franco-British Aviation.
The Letord Let.5 was probably the most numerous of a family of 3-seat reconnaissance bombers, designed and built in France from 1916, originally to an A3 specification from the STAé.
The Levasseur PL.4, aka Levasseur Marin, was a carrier-based reconnaissance aircraft produced in France in the 1920s. It was a conventional, single-bay biplane that carried a crew of three in tandem, open cockpits. Purchased by the Aéronavale to operate from the aircraft carrier Béarn, it incorporated several safety features in case of ditching at sea. Apart from small floats attached directly to the undersides of the lower wing, the main units of the fixed, tailskid undercarriage could be jettisoned in flight, and the underside of the fuselage was given a boat-like shape and made watertight.
The Levasseur PL.5 was a carrier-based fighter produced in France in the late 1920s, in response to the 1924 AMBC.2 specification issued by the Service Technique de l'Aéronautique (STAé). It was a conventional, single-bay sesquiplane that carried a crew of two in tandem, open cockpits. Like other Levasseur naval designs of the day, it incorporated several safety features in case of ditching at sea. Apart from small floats attached directly to the undersides of the lower wing, the main units of the fixed, tail-skid undercarriage could be jettisoned in flight, and the underside of the fuselage was given a boat-like shape and made watertight.
The Lioré et Olivier LeO H-180 was a 1920s French two-seat flying-boat built by Lioré et Olivier.
The Bellanger-Denhaut 22 was a twin-engined bomber/reconnaissance flying boat designed by François Denhaut the technical director for seaplanes for the car manufacturer Bellanger.
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 Loire 30 a.k.a.Loire 300 was a French three-seat night reconnaissance monoplane designed and built by Loire Aviation of St. Nazaire.
The Wibault 10/II Tramontane was a two-seat reconnaissance aircraft designed and built by Société des Avions Michel Wibault in France for the French military 1923 A.2 competition for a 2-seater reconnaissance aircraft.
The Descamps 17 A.2 was a two-seat reconnaissance fighter built under a French government programme of 1923. Two versions, with different engines, were tested and six examples were built under licence by Caudron as the Caudron C.17 A.2.
The Les Mureaux 3 C.2 and Les Mureaux 4 C.2 were French two seat, parasol winged fighters, flown in 1927-8, which differed only in their engines. They were developed into near identical army co-operation types, the ANF Les Mureaux 130 A.2 and ANF Les Mureaux 131 A.2, in 1929-31.
