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Old Mar 10, 2008 | 11:16 pm
  #14  
wanaflyforless
 
Join Date: Apr 2002
Location: MHT/BOS <--> World
Programs: AA Plat 2.8MM
Posts: 4,629
Originally Posted by Tangoer
as SMINTAIR adds fresh outside air to the conditioning system!
So do most airline planes today. The mix is around 50/50 on many planes (recycled air : outside air).
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