Hot air balloon sea level, and humidity of the air surrounding. On a warm day, a balloon cannot lift as much as on a cool day, because the temperature required for launch will exceed the maximum sustainable for nylon envelope fabric. Also, in the lower atmosphere, the lift provided by a hot air balloon decreases about 3% for each 1,000 meters (1% per 1,000 ft) of altitude gained. Standard hot air balloons are known as Montgolfier balloons and rely solely on the buoyancy of hot air provided by the burner and contained by the envelope. This style of balloon was developed by the
2016 Lockhart hot air balloon crash owner died in the accident, announced that it would be suspending operations. More than two years later on September 27, 2018, the House of Representatives approved new legislation that would mandate medical exams for commercial balloon pilots. 2016 Lockhart hot air balloon crash On July 30, 2016, sixteen people were killed when the hot air balloon they were riding in struck power lines, crashed and caught fire in the unincorporated community of Maxwell, near Lockhart, Texas, south of the state capital Austin. It is the deadliest ballooning disaster to ever occur in the United States. The aircraft involved was a