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Thread: Vapour Discharge from 747 at cruise altitude
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Old 1st January 2016 | 21:48
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radar0976
 
Joined: Jun 2007
Posts: 63
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From: Ireland
Vapour Discharge from 747 at cruise altitude
What is this being discharged from the underbelly of a BA 747 ? Presumably some sort of release valve for the air con system or something like that ?

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