The successful navigation of Bangda Airport has created a miracle in the history of human civil aviation flight. The airport climate is bad, the wind speed often reaches more than 30 meters per second in winter, and the temperature in winter and spring is often above MINUS 30 degrees Celsius every year. The altitude of the airport is nearly 60 meters higher than the design landing height limit of Boeing aircraft in the United States. To this end, before the first flight, China and the United States formed a joint test flight team and conducted a strict test flight with the advanced Boeing 757-200 aircraft. The air density at the airport is less than 60% of the sea level. The test flight team reformed the sealed pressurization system of the aircraft in advance, revised the data obtained after the test flight, and then simulated the flight with a computer to obtain the maximum carrying capacity. The test shows that the take-off load and landing load of Boeing 757-200 in Bonda are 75.9 tons and 80 tons, respectively, which are much less than the conventional design of 108 tons and 90 tons. The carrying capacity of Boeing 757-200 passenger plane carrying out Bangda route is strictly controlled below 70%. The completion and use of Bangda Airport has further promoted the development of aviation in Tibet. By the beginning of 2008, Tibet had opened domestic routes from Lhasa to Chengdu, Xining, Xi, Beijing, Chongqing and Qamdo to Chengdu, and opened international routes from Lhasa to Nepal. In 2007 alone, the cargo and mail throughput was 186.3 tons, which played an important role in Tibet's opening up.