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Thread: How breathable is that air at 30k feet?
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Old Jul 24, 2002 | 2:27 pm
  #15  
Doppy
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Where did they even find airplanes that take in 100% fresh air?

Ever since it was discovered that they could save upwards of 40% on fuel by recircing, I don't think there are any commcercial airlines still using 100% fresh air.

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