C.Owers Hansa-Brandenburg Aircraft of WWI Vol.1: Landplanes (A Centennial Perspective on Great War Airplanes 17)

Type KDD
  
   The KDD was a two-seat reconnaissance plane derived from the KD and retaining the star-strut arrangement. The biplane was of typical Brandenburg mixed construction. Armament was a single machine gun. The pilot had limited forward view being enclosed in his cockpit by the upper wing and engine cowling in an attempt to streamline the aircraft. The first prototype, 60.56, was not successful although it underwent considerable modifications, including three changes of wings.
   A second machine, 60.57, was built that incorporated all the lessons learned from the first. It too was unsuccessful but survived the war before being destroyed.

Type KDD Specifications
Source Typenschau* PMG Data 60.56
Span, m 11.26 11.27/10.32
Chord, m 1.62/1.62
Length, m 7.75
Empty Wt., kg 820 kg
Loaded Wt., kg 1,184 kg
Motor 160-hp Austro- Daimler 160-hp Daimler
* The Typenschau also records the KDD as the UFAG KDD with the same specifications.

E.Hauke, W.Schroeder, B.Totschinger Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

60. Flugzeuge der Ungarischen Flugzeugfabrik A.G. (Ufag) Budapest und Hansa Brandenburgische Flugzeugfabrik Brandenburg/Briest
60.56 Brandenburg DD (Type KDD) Dm 160
60.57 Brandenburg DD (Type KDD) H 200