[1] The D.31 Turbulent was designed to be amateur-built and is a single-seat ultra-light aircraft with cantilever low-wing and fixed tailwheel landing gear.

[4] The rights to plans for the design are held by the UK Light Aircraft Association.

[7] Reviewers Roy Beisswenger and Marino Boric described the design in a 2015 review, saying, "the controls are wonderfully light, and although not aerobatic, the aircraft has been used by the Tiger Club Display Team for formation flying displays in the UK, since 1959.

In the same year, the same aircraft won the King's Cup air race, flown by John Severne.

Data from A.J.Jackson, British Civil Aircraft since 1919 Volume 2, Putnam & Company, London, 1974.