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Hydraulic systems are highly beneficial for aircraft, allowing for enough force to be created to reliably operate and adjust various assemblies, systems, and surfaces. The hydraulic fluids that are used in the aviation industry are known for being thinner than industrial fluids, and they are also partly chosen by their fire resistance due to the extreme hazards that flames can present to aircraft while they are high up in the atmosphere. To keep hydraulic fluid safe, it needs to remain in a temperature range of -65 degrees to 275 degrees Fahrenheit so that it will not freeze or boil. As there are different types of hydraulic fluid available for aircraft based on the application and environment, it can be useful to have a basic understanding of the most popular options.

When flying a plane, there are several things that a pilot needs to take care of or remain cognizant of, such as their GPS location, uninterrupted communication during the flights, flying on a correct route, etc. Across all these factors, one such important metric is altitude.