In rec.aviation.student Mxsmanic wrote:
Michael Ash writes:

You don't legally need oxygen for the passengers until 15,000ft ...

I know, but I prefer not to wait until the law requires it to take
precautions. Some people show signs of hypoxia at half that altitude. Why
take the risk?

You know, I addressed this point, and you snipped it. Why did you do that?

--
Mike Ash
Radio Free Earth
Broadcasting from our climate-controlled studios deep inside the Moon