Standard pressure and temperature
Eric Fletcher S.O.C.
Steadi at swbell.net
Wed Mar 21 00:55:27 EST 2001
> <<<can you even *breathe* at 0.5 bar??? Just barely. In an unpressurized
> aircraft, a pilot must breath supplemental oxygen above 10,000 feet but a
> passenger is nor required to breath supplemental oxygen until 12,000.
Nope sorry the Regs for supplemental oxygen reads:
91.211 Supplemental Oxygen
(a) General. No person may operate a civil aircraft of
U.S. registry ‹
(1) At cabin pressure altitudes above 12,500 feet (MSL) up to
and including 14,000 feet (MSL) unless the required minimum
flight crew is provided with and uses supplemental oxygen for
that part of the flight at those altitudes that is of more
than 30 minutes duration;
(2) At cabin pressure altitudes above 14,000 feet (MSL) unless
the required minimum flight crew is provided with and uses
supplemental oxygen during the entire flight time at those
altitudes; and
(3) At cabin pressure altitudes above 15,000 feet (MSL) unless
each occupant of the aircraft is provided with supplemental
oxygen.
Just setting the record straight. BTW it is suggested that you should go
onto O2 at 5,000 feet at night to preserve night vision.
Eric Fletcher
'00 S4tt
PPSEL/IA
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