The Fokker F.VIII was a large twin-engined airliner designed and produced by the Dutch aircraft manufacturer Fokker in the 1920s.
The Canadian Vickers Varuna was a Canadian flying boat of the 1920s built by Canadian Vickers as a twin-engined, unequal-span biplane, with a wooden hull and steel tube structure.
The Albatros L 73 was a German twin-engined biplane airliner of the 1920s. Of conventional configuration, it featured a streamlined, boat-like fuselage and engine nacelles. All four manufactured aircraft of that type were operated by Deutsche Luft Hansa, one of which crashed near Babekuhl on 28 May 1928.
The Airco DH.16 was a British four-seat commercial biplane of the 1910s designed by Geoffrey de Havilland, the chief designer at Airco.
The Fokker F.IX was an airliner developed in the Netherlands in the late 1920s, intended to provide KLM with an aircraft suitable for regular services to the Dutch East Indies. When the onset of the Great Depression forced the postponement of those plans, the market for this aircraft disappeared as well, although it did see military service in Czechoslovakia as a bomber.
The Caspar C 35 Priwall was a German airliner of the late 1920s, of which only a single example was built. It was a large, single-engine, single-bay biplane of conventional configuration with fixed tailskid undercarriage. The staggered, equal-span wings were braced with a large I-strut. Not only were the passengers seated within a fully enclosed cabin, but the flight deck was fully enclosed as well.
The Curtiss T-32 Condor II was a 1930s American biplane airliner and bomber aircraft built by the Curtiss Aeroplane and Motor Company. It was used by the United States Army Air Corps as an executive transport.
The Fokker F.XX was a 1930s Dutch three-engined airliner designed and built by Fokker. It was the first Fokker design to use an elliptical-section fuselage instead of the traditional square fuselage and the first Fokker aircraft with retractable landing gear.
The Fokker F.XXII was a 1930s Dutch four-engined 22-passenger airliner designed and built by Fokker.
The Fokker F.XXXVI was a 1930s Dutch four-engined 32-passenger airliner designed and built by Fokker. It was the largest transport designed and built by Fokker. Only one was built, and it was used for some commercial routes starting in 1935, and later aviation training by the British Royal Air Force until 1940.
The Fleet 50 Freighter was a Canadian twin-engine biplane general utility aircraft designed and built by Fleet Aircraft. This peculiar-looking aircraft had promise as a freighter and general use aircraft, but it was underpowered and only five were built.
The Fokker F.III was a single-engined high-winged monoplane aircraft produced in the 1920s by the Dutch aircraft manufacturer Fokker. It could carry five passengers. The aircraft was also built under licence in Germany as the Fokker-Grulich F.III.
The Fokker F.XII was a three-engined high-winged monoplane airliner produced in the 1930s by the Dutch aircraft manufacturer Fokker. Two aircraft were built under license by Danish Orlogsværftet. The first was powered by 347 kW (465 hp) Bristol Jupiter VI radial engines and the second, an improved model, the F.XIIM, was about 20 km/h (12 mph) faster than the Dutch-built F.XIIs.
The Hall PH was an American flying boat of the 1930s. It was a twin-engined biplane, developed from the Naval Aircraft Factory PN and could hence trace its lineage back to the Felixstowe flying boats of World War I. The PH was purchased in small numbers by the United States Navy and the United States Coast Guard. It remained in service with the Coast Guard until 1944, being used for anti-submarine and search and rescue duties.
The Fokker F.II was the first of a long series of commercial aircraft from the Fokker Aircraft Company, flying in 1919. In a biplane age, it presented a distinct clean, high-wing monoplane style that sold successfully across Europe and North America during the development of commercial passenger-carrying aviation.
The Fokker F.XVIII was an airliner produced in the Netherlands in the early 1930s, essentially a scaled-up version of the Fokker F.XII intended for long-distance flights. Like its predecessor, it was a conventional high-wing cantilever monoplane with fixed tailwheel undercarriage. Its cabin could seat 12 passengers, or four-to-six on seats convertible to sleeping berths. Only five were built, all for KLM, and registered as PH-AIO, 'AIP, 'AIQ, 'AIR and 'AIS, all of which were named after birds. Used by KLM on its Amsterdam-Batavia route, the F.XVIII became celebrated in the Netherlands due to two especially noteworthy flights. In December 1933, one aircraft was used to make a special Christmas mail flight to Batavia, completing the round trip in a flight time of 73 hours 34 minutes. The following Christmas, another F.XVIII made a similar flight to Curaçao in 55 hours 58 minutes after having been specially re-engined for the journey.
The NVI F.K.33 was an airliner built in the Netherlands in 1925 for use by KLM for night flying.
The Koolhoven F.K.40 was a small airliner built in the Netherlands in 1928 for KLM Royal Dutch Airlines. It was a conventional high-wing cantilever monoplane powered by a single engine in the nose. The fuselage was made of welded steel tube construction with a wooden wing skinned in plywood and held in place by four bolts to facilitate removal. The cabin was spacious for an aircraft of its size, and was intended to be readily reconfigured for passengers, mail, or freight. Although up to six seats could be fitted, the only F.K.40 built flew with four.
The Macchi M.24 was a flying boat designed by Alessandro Tonini and produced by Macchi in Italy during the 1920s. Originally intended as a bomber, it was eventually produced for civilian use as well.
The Vickers Vellore was a large biplane designed as a freight and mail carrier, in single-engined and twin-engined versions, which saw limited use as freighters and long-range experimental aircraft. A final variant with a broader fuselage, the Vellox, was completed as an airliner.
