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737-800 Flight crew O2 mask
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7th Oct 2014, 20:57
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BOAC
Per Ardua ad Astraeus
Join Date: Mar 2000
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As bubbers says, if you hang around doing memory items @ 41000' you shortly will not have any memory left
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I believe the 40000' is for sustained survival. I recall that over 40000' you would need pressure breathing.
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