When and where did the first untethered, free-flying manned ascent take place?
Answer
November 21, 1783, from the Château de la Muette
The ultimate achievement in the early phase of Montgolfier aeronautics was the first untethered, free-flying manned ascent, which occurred on November 21, 1783. This historic launch originated from the Château de la Muette in Paris. This event marked the true beginning of human aeronautics, demonstrating that their craft was reliable and safe enough for human occupants to pilot freely across the capital city. Although tethered flights happened sooner, this specific untethered ascent is recognized as the crowning achievement following the earlier animal testing.

Related Questions
What was the original family trade of Joseph-Michel and Jacques-Étienne Montgolfier?What did the Montgolfiers term the supposed lifting gas they observed rising with smoke?Where did the first major public demonstration of the unmanned balloon occur in June 1783?Who were the three animals carried during the September 19, 1783 flight at Versailles?When and where did the first untethered, free-flying manned ascent take place?Which two individuals undertook the first free-flying manned ascent in November 1783?What material lined the envelope used for the first manned flight demonstration?What combination of materials were used as fuel during the initial unmanned flight in Annonay?What was the initial, incorrect scientific reason the Montgolfiers attributed lift to?What material was used to reinforce the opening/mouth of the balloon structure?What profound historical moment did the success of the Montgolfier balloon effectively mark?