Originally Posted by tracon
I'm not saying you were lied to but....
FL250 is the highest an aircraft is allowed to fly with an inop O2 mask system.
That is why DH8s and the like never fly above Fl250 because they don't have drop down masks.
hmmm..I didn't think of that. Very true. Beth's dad was on a UA B737 last year with the same thing. Flew to DEN from YVR at FL240.