Avro 642 Eighteen - Wikipedia
Development. As a follow-on to the Avro 618 Ten the Eighteen was a larger aircraft but used a modified Avro Ten wing. The wing was moved to the shoulder position with the engines mounted on the wing and a new larger fuselage was used. When the design was completed in February 1933 it was the largest aircraft designed by Avro. The new fuselage was a fabric-covered welded steel structure with ...