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Airplane cabins are pressurized so that the air inside remains breathable at high altitudes.
0
votes
2
answers
2k
views
How does outflow valve work?
As we know that outflow valve normally closes during climb and cabin altitude also increase but why does outflow valve open if we have selected manual pressurisation and increasing cabin altitude !
4
votes
1
answer
435
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How often is the cabin air replaced in A320?
One of the A320 pilots told me that there is an icao rule that air should be replaced every 90 seconds?
Is this true ? can someone give me a supporting article for the same