Why don't planes fly over Tibet?

Crealys

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Why don't planes fly over Tibet?

Because people would die.

This is the most logical answer.

But here is the complete list of reasons why planes do not fly over the Tibetan plateau (or other mountain ranges above 6000 meters above sea level):

1. The mountains of Tibet are very high. Mount Everest is located on the border between Nepal and Tibet. The plateau contains peaks higher than 6000 meters above sea level. While most commercial aircraft are capable of flying above mountains, there is still a risk of... crashing into the mountains.
2. It would be impossible to make an emergency landing. You would crash into the mountains.
3. In the event of a loss of cabin pressure, the aircraft is expected to descend to an altitude where the air is breathable. If such a situation were to occur over the Tibetan plateau, the plane would most likely crash into the mountains.
4. In the event of an engine failure, most emergency procedures involve a gradual descent to about 6000 meters. At this altitude you would crash into the mountains.
5. There are no major airport hubs on and around the Tibetan Plateau. There is not all this need to fly over the area. The planes, therefore, do not fly over Tibet, thus avoiding crashing into the mountains.
6. Turbulence in clear air. There is a higher chance of turbulence in clear air caused by Himalayan air currents, which can cause you to crash into mountains.