Early flying machines a second, inner ballonet. On 19 September 1784, it completed the first flight of over , between Paris and Beuvry, despite the man-powered propulsive devices proving useless. In January the next year Jean Pierre Blanchard and John Jeffries crossed the English Channel from Dover to the Bois de Felmores in a Charlière. But a similar attempt the other way ended in tragedy. In an attempt to provide both endurance and controllability, de Rozier developed a balloon with both hot air and hydrogen gas bags, a design which was soon named after him as the "Rozière." His idea was to use
2016 Lockhart hot air balloon crash pilot's "pattern of poor decision-making" that led him to launch the balloon (on a day when other balloon operators cancelled their planned flights because of low cloud and fog), to continue the flight into fog and above clouds, and then to descend near clouds which made it difficult to see and avoid obstacles. The pilot's medical conditions (depression and ADHD), the prescription drugs he was taking, and the fact that balloon pilots do not need a medical certificate even for commercial flights were contributing factors leading to the accident. On August 1, Heart of Texas Hot Air Balloon Rides, whose