5 Hryven Nesterov's Loop

Pyotr Nesterov performed the first aerial loop in history on September 9, 1913, above Syrets aerodrome near Kyiv — making the centennial commemoration both geographically and historically apt for a Ukrainian issue. He flew an unarmed Nieuport IV, cut the engine at the apex, and landed without incident, though his commanding officer immediately placed him under arrest for endangering military property.

Nesterov was killed the following year in the opening weeks of World War I, ramming an Austrian reconnaissance aircraft over Galicia — the first aerial ramming in wartime history.