21 September 1913

Twelve days after Pyotr Nesterov's September 9 loop at Kiev, Adolphe Pégoud duplicated the feat. Because Nesterov's "misuse" of an airplane was not mentioned in the Russian press, Pégoud was reported to have been the first person to perform the aerial maneuver of flying an airplane in a vertical circle and inspired pilots worldwide to try similar stunts.