I would like to check if itīs true that the MAX. CERTIFIED FL for a certain aircraft is limited by pressurization requirements, as max allowed cabin altitude for a PAX airplane is 8.000 feet. Therefor if for structural reason max differential pressure is 7.77 psi, you cannot climb above certain FL mantaining 8.000 feet cab alt., regardless of your weight.
Anything to do with oxigen pressurized system in case of depressurization?