Known only as the Kondor Dreidekker this aircraft, first flown in October 1917, was not a success; its development programme was soon abandoned because of severe vibrational problems.

At the rear the tailplane was mounted at mid-fuselage under a long chord fin with a strongly swept leading edge, carrying a deep rudder.

The D 7 had a fixed conventional undercarriage, with each mainwheel's leg placed vertically and mounted at mid-fuselage, assisted by a forward leaning strut attached under the nose.

The cockpit was aft of its trailing edge, where there was a central rounded cut-out to assist the pilot's upward and forward view.

The lower wing, narrower in chord, was not directly attached to the fuselage but supported centrally by rear leaning struts from the undercarriage structure.