A couple of stupid questions:
1. How long will the activated oxy masks supply oxy?
2. Do the inactivated masks will work if needed afterwards?
A somewhat stupid thinking of mine goes like this: If the inactivated masks can be used later then one would be able to continue at cruise altitude and if something that needs the use of them happens, then the oxy is there. As for the activated masks, you'd still have the 10% surplus of oxy masks which may be used in place, provided not too many pax activate their masks. That way you wouldn't need to divert or to descend to 250, possibly forcing to divert as well.
Bear with me please
