AGO S.I

The AGO S.I, a German prototype ground attack aircraft, was constructed in October 1918, although it may not have taken flight prior to the conclusion of World War I.

This single-seat biplane was equipped with a 20mm cannon that fired downwards.

Specifications
Crew

One
Powerplant

1 × Basse und Selve BuS.III,

113 kW (150 hp)
Armament
2 × machine guns
1 × 20 mm Becker cannon

Sources
AGO-Flugzeugwerke Oschersleben-U Schmidt.
Otto, AGO, and BFW Aircraft of WWI-Jack Herris.
German Aircraft of the First World War-O Thetford & P Gray.