All Aero

In the Dessau design office headed by Dipi Ing Emst Zindel, work had begun during 1922 on three new military types intended for production at Fili the J20 two seat low wing reconnaissance floatplane and the J21 two seat reconnaissance and J22 single seat fighter parasol wing aircraft.
On December 4, 1922 Jfa received an order from the Soviet government for a total of 100 aircraft 20 J20s, 50 J21s and 30 J22s. The first of these machines were being assembled during August 1923. The J21 was built in quantity at Fili.