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Why do airplanes avoid flying over Tibet?

Discover why airplanes avoid flying over Tibet, a region that reaches over 4,500 meters in altitude, complicating commercial flights....
Author: Patricia Alegsa
15-08-2024 14:07







  1. Tibet: The Roof of the World
  2. Challenges of Pressurization and Altitude
  3. Engine Performance at High Altitudes
  4. Weather Conditions and Air Regulations

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Tibet: The Roof of the World



The Tibet, known as the "roof of the world," is distinguished by its impressive average altitude that exceeds 4,500 meters.

This mountainous region is not only famous for its natural beauty and rich culture, but it also presents significant challenges for commercial aviation.

Airlines have established the practice of systematically avoiding flying over Tibet, not only due to its altitude but also because of the associated risks that affect flight safety.


Challenges of Pressurization and Altitude



One of the main problems airlines face when considering flights over Tibet is cabin pressurization.

According to Interesting Engineering, although airplanes are designed to maintain a safe and comfortable environment, any failure in pressurization could force the crew to make a rapid descent to an altitude where oxygen is breathable.

In Tibet, this becomes a challenge, as the average altitude of the region (close to 4,900 meters) exceeds the recommended safety height for a safe evacuation.

Additionally, the mountainous terrain complicates the identification of suitable locations for emergency landings.

Nicolás Larenas, an aviation expert, points out that “in most of the Tibetan region, the altitude far exceeds that minimum emergency/safety height,” which further complicates aerial operations.


Engine Performance at High Altitudes



The performance of jet engines is also affected by altitude. At higher altitudes, the air is thinner and oxygen levels are lower, which impacts the efficiency of the engines.

“Jet engines need oxygen to burn fuel and generate thrust,” explains the media, highlighting the difficulty of operating in thin air conditions. This translates into a lower capacity for airplanes to operate efficiently and safely in Tibet.


Weather Conditions and Air Regulations



The weather conditions in Tibet are notoriously unpredictable, with sudden storms and severe turbulence presenting an additional risk for flights.

Pilots may face difficulties in maintaining the stability of the aircraft, further complicating aviation in this region.

Additionally, Tibetan airspace is subject to strict international and national regulations.

These regulations not only limit the routes available for airlines but also require special equipment and training for pilots operating in these challenging conditions.

Air Horizont mentions that, although most passenger planes can fly at altitudes above 5,000 meters, emergencies in Tibet are problematic because any safety altitude is below the region's altitude.

Ultimately, flying over Tibet involves facing a series of challenges that make it preferable to avoid this region.

From the need for proper pressurization and the lack of emergency landing points to difficulties in engine performance and adverse weather conditions, each factor contributes to airlines' decision to circumnavigate Tibet rather than cross it directly.



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