Nielsen & Winther Type AA

The Nielsen & Winther Type Aa was a single-seat biplane fighter aircraft, designed in Sweden by Enoch Thulin and manufactured in Denmark in 1916–1917 by Nielsen & Winther in Copenhagen. == Development == The first fighter aircraft to be built in Denmark, the Nielsen and Winther Type Aa was designed during World War I by the Swedish aircraft manufacturer Enoch Thulin in 1916, and designated as his Type M. Although Thulin had previously sold aircraft made by his AETA firm (A.B Enoch Thulins Aeroplanfabrik, (later AB Thulinverken) based in Landskrona) to the Swedish military (e.g.

Source: Wikipedia — Nielsen & Winther Type AA (CC BY-SA 4.0)