Why can't the plane fly directly over Tibet? This is a detour. What's the impact of flying directly?

The first reason is high altitude. First, let's look at a set of data. The Qinghai-Tibet Plateau is about 2,800 kilometers long from east to west and 300 ~ 1.500 kilometers wide from north to south. Generally, it is between 3,000 and 5,000 meters above sea level, among which there are more than 1.000 peaks over 7,000 meters. Plus Mount Everest, which is 8848 meters above sea level, if you want to fly over it, it means that the height of the plane must reach at least 9400 meters, which is a disaster for the plane.

After World War II, more than 2,000 transport planes crashed on the entire hump route. Many of them were not shot down by the Japanese, but caused by the harsh environment of the Qinghai-Tibet Plateau, so the hump route is also called the "death route".

The second reason is that atmospheric turbulence is too complicated. In many alpine regions of Tibet, due to its own environment, it is difficult for radar to detect the turbulence here. Once the plane is caught in the turbulence, it will have serious bumps. If we encounter more and more atmospheric turbulence, the various parts of the aircraft will be unevenly stressed, leading to the disintegration and crash of the tail. In addition, turbulence will also have an impact on light and electromagnetic waves.

1996, a British overseas airlines plane encountered atmospheric turbulence during the flight, and the aircraft lost control and shook, then dropped rapidly, and finally fell from a height of 4874 meters.

The third reason is the problem of aircraft fuel. As the altitude increases, the temperature will gradually drop. It is estimated that the temperature in the Himalayas can be as low as MINUS 47 degrees Celsius. Because the temperature is too low, the fuel in the plane will freeze. Flying in such a low temperature environment, once the fuel freezes, the consequences are unimaginable.

The last important reason is the handling of aircraft failures. At present, many jet planes can adjust their altitude in case of emergency in flight. This method is simple for most flight routes, but not feasible for the Qinghai-Tibet Plateau. The complex geographical environment does not leave enough space for the plane to deal with emergencies, and there is no spare airport for emergency landing. Therefore, considering the safety of passengers, many planes will choose to avoid Tibet and choose to fly around. However, some airlines will fly over Tibet, such as Sichuan Airlines, Air China and Tibet Airlines.