What about captain incapacitation? Who's going to babysit you then?
I am type rated on the 737, I have all relevant licenses and have passed an OPC, do you think I have never flow an areoplane before???
737 is not that complicated aircraft
if you think that then there is certainly no place for you in aviation either, there are old pilots and there are bold pilots but there are no old bold pilots my friend.
Sorry to say that, but if you cannot calculate pressure altitude, you have no place being involved in commercial operations - be it with C172 or A380.
Oh I'm sorry if this is so important why I have never once used it in all my LT hours??