From Wings of Linen

"Avro" was short for A.V. Roe & Co., Ltd., of Manchester and Hamble. A. V. Roe's planes may have only played a small direct part in the history of WWI air combat, but the 504 played a larger part as a trainer, and of course (unlike many of its contemporaries) the Avro firm had a history lasting long after World War One.[1] 8340 504s were produced during the war.[2]

Production Aircraft

Aircraft from the Great War or shortly thereafter include:



  1. Avro's first plane did not see combat, but the dozen 1912 biplanes were early trainers and started the train of Avro designs.[3]
  2. Ten 504Es were built and used as trainers.[4]
  3. The 504F was an experimental version with a 75hp Rolls-Royce Hawk engine. Production was not undertaken, as it was underpowered.[4]
  4. The 504G was a gunnery trainer version of the 504B.[4]
  5. The 504H was a converted 504C used in RNAS experimentation with catapult launches from ships.[4]
  6. The 504J was a widely-used trainer which appeared in the autumn of 1916. Many were converted to 504Ks.[4]
  7. Six larger prototype biplanes were built and sent to the RFC and RNAS, but the type did not enter production.[5]
  8. Twenty-six two-seater fighters based on the 504 were built in 1916, but they were probably only used as trainers.[6]
  9. The twin-engine 523 Pike showed promise in 1916, but it was not selected for production.[7]
  10. The 527 was a failed two-seater prototype with a 150hp Sunbeam.[8]
  11. The 528 was a 527 with a 225hp Sunbeam engine, but it was no more successful.[9]
  12. The 529 and 529A were long-range bombers based on the Pike. They were tested in 1917 but were not selected.[10]
  13. The 530 was a promising two-seater fighter, but a shortage of Hispano-Suiza engines and competition with the Bristol F.2B led to its shelving.[11]
  14. The 531 was a compact and nimble single-seat fighter, but its low horsepower and single gun put it behind the times for 1918.[12]
  15. The 1918 Manchester was a twin-engine bomber that came too late for the war, but its stats and size were similar to the Airco D.H.10.[13]
  1. Bruce, p.36
  2. Bruce, p.53.
  3. Bruce'69, pp.34-37.
  4. 4.0 4.1 4.2 4.3 4.4 Bruce, pp.39-55.
  5. Bruce'69, pp.56-58.
  6. Bruce'69, pp.58-59.
  7. Bruce'69, pp.59-60.
  8. Bruce'69, p.60.
  9. Bruce'69, p.61.
  10. Bruce'69, pp.61-63.
  11. Bruce'69, p.64.
  12. Bruce'69, p.66.
  13. Bruce'69, pp.67-69.
  • J.M. Bruce. British Aeroplanes 1914-18. Great Britain: Funk & Wagnalls, 1957, 1969. ISBN 0370000382
  • W.M. Lamberton and E.F. Cheesman, Reconnaissance & Bomber Aircraft of the 1914-1918 War. Great Britain: Harleyford Publications Ltd., 1962. ISBN 9780900435027