Avro 531 Spider Overview The Avro 531 Spider was a prototype First World War British sesquiplane fighter aircraft built by Avro. Specifications Aircraft Roles Fighter Aircraft Country United Kingdom Timeline 1910s First Flown 1918 Manufacturer Avro aircraft Configuration Wing Sesquiplanes Types Rotary-Engined Aircraft Single-engine aircraft Single-Engined Tractor Aircraft Tractor Aircraft View on Wikipedia → ◀ Avro 530 BAT Bantam ▶ Similar Aircraft Sopwith Camel United Kingdom 1910s Royal Aircraft Factory S.E.5 United Kingdom 1910s Bristol F.2 Fighter United Kingdom 1910s Sopwith Pup United Kingdom 1910s Airco DH.2 United Kingdom 1910s Sopwith 1½ Strutter United Kingdom 1910s