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Thread: DL 767-300 decompression (DL 2353 9/18)
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Old Sep 19, 2019, 3:06 pm
  #36  
vitira
 
Join Date: Mar 2009
Location: BOS ORD (via MSP) and occasionally AUG and MWN
Programs: UA 2P. Former DL FO in the Golden Age of Mileage Runs
Posts: 139
Originally Posted by WillSkiGT
Even 14-15k feet isn't as bad.

If you stay at 14k feet long term, hypoxia is possible, but useful consciousness is ~30 mins or more.

The scary thing is explosive decompression at max cruise altitude. Useful consciousness is ~5 seconds. If you aren't quick with oxygen mask or at least the autopilot altitude selector, you're toast.
I mean … there are 54 peaks in Colorado >14k ft which people climb without oxygen. Useful consciousness there can be forever, depending on the person.
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