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A320 Cockpit air noise change on climb and descent
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2nd Dec 2010, 10:42
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mcdhu
Join Date: Mar 2000
Location: Sunrise Senior Living
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This has been discussed previously so a search should find it.
I seem to remember that, as Meiklour suggests above, it is to do with the keel drainage valves closing - not mentioned in the FCOM.
Cheers
mcdhu
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