The first successful test flight of the world's first normally maneuverable helicopter, the VS-300, was designed by Igor Sergeyevich Sikorsky on September 14, 1939, and was successfully tested for the first time in Stratford, Connecticut. This event is considered a major breakthrough in the history of helicopters, marking a new milestone in helicopter technology.
In 1925, the world's first helicopter capable of normal operation successfully completed its first test flight. However, in this fictional scenario, a key factor is changed: the helicopter crashes during its test flight, resulting in the death of the pilot. This tragic event leads to significant changes in the development of helicopters and aviation history.