__NOTOC__ The Avro 613 was a 1920s-proposed British design 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 meet an

Air Ministry The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force and civil aviation that existed from 1918 to 1964. It was under the political authority of the ...

requirement for a twin-engined

night bomber A night bomber is a bomber aircraft intended specifically for carrying out bombing missions at night. The term is now mostly of historical significance. Night bombing began in World War I and was widespread during World War II. A number of moder ...

. A prototype was ordered but it was not built.

Development

Air Ministry Specification B.19/27 was issued in August 1927 for a twin-engined night bombing landplane to replace the

Vickers Virginia The Vickers Virginia was a biplane heavy bomber of the British Royal Air Force, developed from the Vickers Vimy. Design and development Work on the Virginia was started in 1920, as a replacement for the Vimy. Two prototypes were ordered o ...

. In May 1928, Avro designed the Avro 613 with two

Armstrong Siddeley Jaguar The Armstrong Siddeley Jaguar is an aircraft engine developed by Armstrong Siddeley. The Jaguar was a petrol-fuelled air-cooled 14-cylinder two-row radial engine design. The Jaguar III was first used in 1923, followed in 1925 by the Jaguar IV ...

engines to meet the specification. Six companies submitted proposals and four were selected to be built for flight trials, the Avro 613, Fairey Night Bomber, Handley Page HP.38 and the Vickers Type 150. A contract was placed with Avro to produce one prototype but it was not built. The B.19/27 was won by the Fairey Night Bomber which became the

Fairey Hendon The Fairey Hendon was a British monoplane, heavy bomber of the Royal Air Force, designed by Fairey Aviation, and first flown in 1930. The aircraft served in small numbers with one squadron of the RAF between 1936 and 1939. It was the first all-m ...

, and the HP.38 was also ordered into production as the

Handley Page Heyford The Handley Page Heyford was a twin-engine biplane bomber designed and produced by the British aircraft manufacturer Handley Page. It holds the distinction of being the last biplane heavy bomber to be operated by the Royal Air Force (RAF). The ...

References

;Notes ;Bibliography * {{Avro aircraft 613 Cancelled military aircraft projects of the United Kingdom 1920s British bomber aircraft Twin piston-engined tractor aircraft