Focke-Wulf  A21 Photomöwe
Type  
Engine 1 BMW VI u
Dimensions Length 13.0 m,height 4.00 m, span 20.0 m
Weights Empty 2700 kg, flying weight 3800 kg
Performance Max. speed 200 km/h, service ceiling 7000 m, range 700 km

Source "Springmann, Lange"

Type WerkNr. Registration History
  56 D-1738  

or Deutschen Luftfahrzeugrolle by Ries

Type WerkNr. Registration History
  54 D-1737 In Oct. 1929 to DVL e. V., Adlershof
Development from the A17 design. The cabin was used as a dark room for making photos.
A21 Photomöwe
Fw A 21with two S 24 Kiebitz