Initially the wing plan was rectangular, with triangular ailerons mounted on straight hinges which were attached to the front spar at the tips, reaching the trailing edge inboard.

Each wing was braced from the lower fuselage with an asymmetric, V-form, streamlined strut to the two spars at about one-third span.

[2] The fuselage was plywood covered with a flat top, deep, slightly curved sides and a V-shaped bottom.

The wing centre section was supported above this cockpit on an extension of the upper rear fuselage, which dropped away aft to become slender at the tail.

[2] The D-7 Margarete first flew in 1923[2] and took part in both the 1923[3] and 1924[4] Rhön events, setting an unofficial record at the latter with a passenger-carrying flight of 21 minutes.