Sikorsky S-17

The Sikorsky S-17 was a Russian single engine aircraft built at the Russian Baltic Railroad Car Works in Petrograd while Igor Sikorsky was the chief engineer of the aircraft manufacturing division.

Design and development
The S-17 was a two seat reconnaissance biplane based on the S-10 and powered by a Sunbeam Crusader V-8 water-cooled engine rated at 150 hp.