On Mon, 15 Aug 2005 23:37:07 GMT, "Steven P. McNicoll"
wrote:

"Bob Moore" wrote in message
. 121...

The Part 121 requirement for Certificated Aircarriers is more restrictive
than for Part 91 Operators. The FL350 is replaced with FL 250.

But still not applicable to the Greek 737 that went down yesterday, although
a similar requirement may have existed for them.

What would have been the effect if the O2 bottle for the cockpit had
been inadvertently filled with breathing air rather than O2? I seem
to remember that this was discovered to have happened somewhere in the
US in the last few months? I would think that a casual test would
have found it normal, but that the PPO2 would have been substantially
too low even with a pressurized mask?