In article %N5Me.1542$yb.46@trndny01,
George Patterson wrote:

Because of this, the FAA requires that a pilot use oxygen if they
spend over 30 minutes above 12,500'.

My recollection of my O2 training is that the rule is 30 minutes over
10,000 ft, or if you go over 12,500 ft at *all*.

But I've only been to about 20,000 ft in a glider, unlike some people I
know who have been far higher.

--
Bruce | 41.1670S | \ spoken | -+-
Hoult | 174.8263E | /\ here. | ----------O----------