Balloon (aeronautics) they are popular for balloonist sport activity. The first balloon which carried passengers used hot air to obtain buoyancy and was built by the brothers Josef and Etienne Montgolfier in Annonay, France in 1783: the first passenger flight was 19 September 1783, carrying a sheep, a duck, and a rooster. The first tethered manned balloon flight was by a larger Montgolfier balloon, probably on 15 October 1783. The first free balloon flight was by the same Montgolfier balloon on 21 November 1783. When heated, air expands, so a given volume of space contains less air. This makes it lighter and,
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