Model Variants (Including Prototypes)
D.I - Pilot trainer; Nieuport 11 direct copy; 95 produced.
D.II - Prototype; Siemens-Halske Sh III 160 horsepower rotary engine; larger fuselage to accomodate new engine; larger propeller blades.
D.II - Larger and wider fuselage
D.IIa - Prototype
D.IIb - Prototype
D.IIc - 2 Prototypes (long and short wing span versions)
D.IIe - Prototype
D.III - Upgraded powerplant to Siemens-Halske 160 horsepower rotary engine.
D.IV - Late arriving and post-Armistice production variant; 60 produced.
D.V - Proposed sesquiplane variant
D.VI - Parasol Monoplane variant becoming the E.I.