The Aermacchi AL-60 is a light civil utility aircraft of the late 1950s and early 1960s, originally designed by Al Mooney of Lockheed in the United States. After the company decided not to build the aircraft in the US, it was manufactured in small quantities in Mexico, and a few were assembled in Argentina by Aviones Lockheed-Kaiser Argentina. It was also built in quantity under licence by Aermacchi in Italy and Atlas Aircraft Corporation in South Africa.
The Hawker Cygnet was a British ultralight sesquiplane aircraft of the 1920s.
The Arado SD I was a fighter biplane, developed in Germany in the 1920s. It was intended to equip the clandestine air force that Germany was assembling at Lipetsk. The layout owed something to designer Walter Rethel's time with Fokker. Of conventional configuration, the SD I featured a welded steel tube frame, metal-covered ahead of the cockpit, and fabric-covered aft of it. The wooden sesquiplane wings were braced with N-type interplane struts, without any wires - a typical Fokker feature.
The Avro 531 Spider was a prototype First World War British sesquiplane fighter aircraft built by Avro.
The Bréguet 390T, 392T and 393T were a family of French propeller-driven sesquiplane airliners of the mid-1930s.
The Fokker B.II was a prototype sesquiplane shipboard reconnaissance flying boat built in the Netherlands in 1923.
The Fokker D.XVI was a sesquiplane fighter aircraft developed in the Netherlands in the late 1920s.
The Macchi M.5 was an Italian single-seat fighter flying boat designed and built by Nieuport-Macchi at Varese. It was extremely manoeuvrable and agile and matched the land-based aircraft it had to fight.
The Sikorsky S-36 was an eight-seat amphibian sesquiplane designed and built by the Sikorsky Manufacturing Company in the late 1920s. The aircraft was ordered by Pan American Airways, the start of a long association with Sikorsky flying boats.
The Douglas XO2D-1 was a prototype American observation floatplane of the 1930s. It was a single engined biplane intended to be launched by aircraft catapult from ships of the United States Navy, but only one was built, the production contract going to Curtiss for the SOC Seagull.
The Canadian Vickers Vigil was a single-seat patrol aircraft designed to meet a Royal Canadian Air Force requirement for a forest fire patrol aircraft.
The Nieuport-Delage Sesquiplans were a series of 1920s French racing monoplanes built by Nieuport-Delage. It was the first aircraft to be recorded as achieving 200 mph (321.88 km/h) in level flight and it established a world air speed record in 1923, attaining an airspeed of 205.2 mph (330.275 km/h).
The Curtiss O-40 Raven was an American observation aircraft of the 1930s which was built and used in small numbers. A single example of the YO-40, a single-engined Sesquiplane with a retractable undercarriage was built, followed by four examples of a modified monoplane version, the O-40B, which remained in use until 1939.
The Béchereau SRAP T.7 was a French single-engined seven-passenger sesquiplane airliner designed by Louis Béchereau who had designed biplane fighters for SPAD including the SPAD S.VII. The aircraft was built by the Société pour la Réalisation d'Appareils.
The Sikorsky S-31 was a 1920s American sesquiplane designed and built by the Sikorsky Manufacturing Corporation and configured for aerial photography.
The Albatros L102 / Albatros Al 102, was a German trainer aircraft of the 1930s. It was a parasol-wing landplane, seating the student pilot and instructor in separate, open cockpits. A biplane floatplane version was also built as the Al 102W, with strut-braced lower wings.
The Potez 26 was a single seat fighter aircraft designed and flown in France in the mid-1920s. It did not reach production.
The Potez 28 was a French aircraft designed in the 1920s to set distance records, built in both sesquiplane and monoplane versions. Only two were completed but both set several long distance records.
The Hanriot H.38 was a French twin-engined sesquiplane flying boat built in the mid-1920s. Though the sole prototype was fitted with two defensive machine gun posts. the H.38 was described at the time as a utility aircraft.
The Caproni Ca.66 and Caproni Ca.67 were Italian night bomber aircraft designed to re-equip the post-World War I Regia Aeronautica.
