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What is the function of ECS in airplane?

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    $\begingroup$ Welcome to aviation.SE! Your question title says ESC, but the body says ECS: which one is correct? It would also help if you can tell us which type of aircraft, and what the abbreviation stands for (if you know). $\endgroup$ – Pondlife Feb 10 '18 at 15:58
  • $\begingroup$ Related: Why is air mixed with bypass air on the A/C of an aircraft? with answers explaining how it works. $\endgroup$ – mins Feb 10 '18 at 17:00
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    $\begingroup$ Do you mean Environmental Control System? If so, can you please edit to say that instead of just using the acronym? There are so many acronyms in aviation that a lot of them can mean different things in different contexts, especially if they're only 2 or 3 letters. $\endgroup$ – reirab Feb 10 '18 at 22:41
  • $\begingroup$ Welcome to aviation.SE. The core of your question is made to expand and explain its title. You should expand it to provide further explanation of what you are looking for, possibly including your current state of understanding so that an appropriate level of explanation can be provided in answers. $\endgroup$ – Manu H Feb 11 '18 at 14:52
  • $\begingroup$ Possible duplicate of Why is air mixed with bypass air on the A/C of an aircraft? $\endgroup$ – Manu H Feb 11 '18 at 14:53
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The ECS system is the Environmental Control System. It is the system that handles pressurization and thermal control of the aircraft. The FAA has a nice handbook on it here. There is some more information on how it works on the new 747-8 here that may be of interest.

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