this post was submitted on 01 Jul 2023
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Today I Learned (TIL)

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TIL that airplane cabin pressures at cruising altitudes are around 11 to 12 pounds per square inch (PSI) which is lower than at ground level (14.7 PSI). This is similar to the pressure one experie... (aerospace.honeywell.com)
submitted 2 years ago by [email protected] to c/[email protected]
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The original was posted on /r/todayilearned by /u/KimCureAll on 2023-07-01 13:04:18+00:00.

Original Title: TIL that airplane cabin pressures at cruising altitudes are around 11 to 12 pounds per square inch (PSI) which is lower than at ground level (14.7 PSI). This is similar to the pressure one experiences on a mountain that is between 6,000 to 8,000 feet high.

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[–] altus 1 points 2 years ago

This may sound silly, but why can't they pressurized the cabin to either the departure or arrival cities' pressure? Wouldn't that avoid the uncomfortable ear popping when the cabin is depressurized?