Crew/Pax Oxy Q's

[CCA]

Your in you Boeing/Airbus fitted with a liquid [edit: should read GASEOUS] OXY system at FL300+ then one of the following happens, what would you do?

1. The Crew OXY drops to 0 psi with suitable ERAs.

2. Crew OXY drops to 0 psi with NO suitable ERAs.

3. PAX OXY drops to 0 psi with suitable ERAs.

4. PAX OXY drops to 0 psi with NO suitable ERAs.

I know it's a fairly broad question, I hope this will lead to further discussion.

Regards CCA