The remaining pre-production aircraft, designated Dr.I, were delivered to "Jasta" 11. "Idflieg" issued a production order for 100 triplanes in September, followed by an order for 200 in November. Apart from the straight leading edge of the tailplane, these aircraft were almost identical to the F.I. The primary distinguishing feature was the addition of wingtip skids, which proved necessary because the aircraft was tricky to land and prone to ground looping. In October, Fokker began delivering the Dr.I to squadrons within Richthofen's "Jagdgeschwader" I.