Developed as a fast scout at a time when such a concept was still not fully established, the 511 flew for the first time in 1913. It was entered into the Aerial Derby race around London in May 1914, but this was postponed due to bad weather, however it was re-entered in the June by which time it had been developed into the Avro 514.
Power plant 1 x 80 h.p.Gnome Monosoupape
Span 26'0" Length 22'4" Height 9'4" Wing area 255 sq ft
Empty weight 675 lb Gross weight 1,165 lb
Max speed 90 mph (Estimated)