Originally Posted by
TURIN
In addition it is a maintenance requirement of several operators I have come across for O2 mask tests to be carried out at every Transit Inspection.
As Fullwings says, that's a lot of Oxygen.
Thanks TURIN. The mask check is 5 seconds at 100%, then there's 15 seconds bleed on first engine start to confirm pressure. By my calculations that should account for no more than 200 psi over 75 flights.