EntityQ438613· pop 7· linked from 85 articlesAvro 521Sign in to saveBritish two-seat fighter planeConnectionsfighter aircraftEntityHawker Siddeley HS 748EntityArmstrong Whitworth ArgosyEntityType EEntityAvro 531 SpiderEntityInternational Standard Book NumberEntityAvro LancasterEntityAvro VulcanEntityLewis gunEntityAvroEntityAvro ManchesterEntityAvro 504EntityAvro AnsonEntity.303 BritishEntityAvro ShackletonEntityAvro LincolnEntityHartEntityAvro YorkEntityaerospace manufacturerEntityC.30EntityCategories1910s British fighter aircraftAircraft first flown in 1915Avro aircraftBiplanesRotary-engined aircraft