The Avro 552 was a British light

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

aircraft produced in the early 1920s. It was another attempt by

Avro Avro (an initialism of the founder's name) was a British aircraft manufacturer. Its designs include the Avro 504, used as a trainer in the First World War, the Avro Lancaster, one of the pre-eminent bombers of the Second World War, and the d ...

to sell a derivative of the wartime

504 __NOTOC__ Year 504 ( DIV) was a leap year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Nicomachus without colleague (or, less frequently, year 1257 ''Ab urbe condita''). The denominati ...

to the civil market.

Design and development

In this case, the company took advantage of the large number of war-surplus

Wolseley Viper The Wolseley Viper is a British-built, high-compression derivative of the Hispano Suiza HS-8 liquid-cooled V-8 engine, built under licence by Wolseley Motors during World War I. It powered later models of the S.E.5a, SPAD VII and other Brit ...

engines left over from

Royal Aircraft Factory S.E.5 The Royal Aircraft Factory S.E.5 is a British biplane fighter aircraft of the First World War. It was developed at the Royal Aircraft Factory by a team consisting of Henry Folland, John Kenworthy and Major Frank Goodden. It was one of the ...

a production. In 1921, one of these was married to a standard 504K airframe for evaluation under the designation Avro 551. Trials proved encouraging, but an extra fuel tank was installed in the upper wing as a result of the Viper's higher rate of fuel consumption, and changes were also made to the

aileron An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement aroun ...

design. This configuration went into production as the 552, with the

Argentine Navy The Argentine Navy (ARA; ). This forms the basis for the navy's ship prefix "ARA". is the navy of Argentina. It is one of the three branches of the Armed Forces of the Argentine Republic, together with the Argentine Army, Army and the Argentine ...

purchasing 12 examples of a float-equipped version, the 552A, which served as trainers until

1927 Events January * January 1 – The British Broadcasting ''Company'' becomes the BBC, British Broadcasting ''Corporation'', when its Royal Charter of incorporation takes effect. John Reith, 1st Baron Reith, John Reith becomes the first ...

. Two similar machines were purchased by

Bulgaria Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey t ...

. In

1924 Events January * January 12 – Gopinath Saha shoots Ernest Day, whom he has mistaken for Sir Charles Tegart, the police commissioner of Calcutta, and is arrested soon after. * January 20–January 30, 30 – Kuomintang in Ch ...

, the

Royal Canadian Air Force The Royal Canadian Air Force (RCAF; ) is the air and space force of Canada. Its role is to "provide the Canadian Forces with relevant, responsive and effective airpower". The RCAF is one of three environmental commands within the unified Can ...

arranged for

Canadian Vickers Canadian Vickers Limited was an aircraft and shipbuilding company that operated in Canada from 1911 until 1944. A subsidiary of Vickers Limited, it built its own aircraft designs as well as others under licence. Canadair absorbed the Canadian Vi ...

to purchase a licence to produce five landplanes and nine

seaplane A seaplane is a powered fixed-wing aircraft capable of takeoff, taking off and water landing, landing (alighting) on water.Gunston, "The Cambridge Aerospace Dictionary", 2009. Seaplanes are usually divided into two categories based on their tech ...

examples for use in

forestry Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests and woodlands for associated resources for human and Natural environment, environmental benefits. Forestry is practiced in plantations and ...

patrol. These differed from British-built aircraft by the use of U.S.

Naval Aircraft Factory The Naval Aircraft Factory (NAF) was established by the United States Navy in 1918 in Philadelphia, Pennsylvania. It was created to help solve aircraft supply issues which the United States Department of the Navy, Navy Department faced upon the ...

floats, and increased fuel tankage for extended range. One of the license-built seaplanes was fitted with a Wright engine and known in Canadian service as the Avro Wright. Licensed production was also undertaken by C.B. Field of Kingswood Knoll,

Surrey Surrey () is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Greater London to the northeast, Kent to the east, East Sussex, East and West Sussex to the south, and Hampshire and Berkshire to the wes ...

, who built three aircraft from surplus components supplied by Avro. These were flown as banner tugs by Inca Aviation until

1935 Events January * January 7 – Italian premier Benito Mussolini and French Foreign Minister Pierre Laval conclude an agreement, in which each power agrees not to oppose the other's colonial claims. * January 12 – Amelia Earhart ...

. The fuselage of the 552 prototype, ''G-EAPR'' was later used as the basis for the Cierva C.8

autogyro An autogyro (from Greek and , "self-turning"), gyroscope, gyrocopter or gyroplane, is a class of rotorcraft that uses an unpowered rotor in free autorotation to develop lift. A gyroplane "means a rotorcraft whose rotors are not engine-d ...

, but was eventually converted back to the winged configuration by a private owner when disposed of by the company.

Operators

; *

Argentine Naval Aviation The Argentine Naval Aviation (', COAN) is the naval aviation branch of the Argentine Navy and one of its four operational commands. Argentina, along with Brazilian Navy, Brazil is one of two South American countries to have operated two aircraft c ...

; *

Bulgarian Air Force The Bulgarian Air Force () is one of the three branches of the Military of Bulgaria, the other two being the Bulgarian Navy and Bulgarian land forces. Its mission is to guard and protect the sovereignty of Bulgarian airspace, and jointly with ...

and naval aviation ; *

Specifications (552)

References

Bibliography

* *

External links

{{Aircraft manufactured in Canada 1910s British civil utility aircraft 552 Floatplanes Single-engined tractor aircraft Biplanes Aircraft first flown in 1921