High altitude

High altitude
No plane flies over Tibet
If you look at the aircraft radar system, you will see that there are many planes flying around the world, but there are no planes in the Tibet region of China. Do you know why planes don't fly over Tibet, even though it's a short flight to the airports around Tibet?
Actually the answer to this question is hidden in the introduction of the "Roof of the world" analogy used for Tibet. Tibet is a geographical location with an average altitude of 5000 meters above sea level and the location of the world's highest mountain, Mount Everest.
It affects aircraft as follows. In modern passenger aircraft, oxygen masks are activated first to allow passengers to breathe if the cabin becomes pressurized or the pressurization system malfunctions. The capacity of those oxygen systems is sufficient for 15-20 minutes and in the event of a failure of the cabin pressurization system, the pilots have to descend to an altitude of 3,000 meters. But in most parts of the Tibetan region, the altitude is more than 3000 meters. Also, there is no environment in Tibet where planes can land safely in case of emergency. Additionally, in the case of an engine failure in a twin-engine aircraft, the aircraft must descend to a certain altitude in order to fly safely. Unfortunately, this is not possible due to the geographical structure of Tibet. No plane flies over Tibet for these reasons….

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