The D.31 was Roger Druine's second post-war design following the Aigle and was intended for both production and home-build markets. Production build rights for the low-wing monoplane were acquired by Rollason Aircraft and Engine in the UK and Stark Flugzeugbau in Germany, and both companies produced modest quantities to add to those home-built versions. Many examples remain extant.

Robert Jackson "The Encyclopedia of Aircraft", 2004