If I recollect correctly, on September 11, 19 people succeeded in entering cockpits to hijack the airplanes and fly the airplanes. Against this modus operandi, one of the measures was to close the door of the cockpit and close it in such a way that an entry would not be possible. Now, the question is whether that is technically possible or whether you could convince the stewardess to open the door for you.
It is probably very hard, but wherever the door is, it is there to be opened. There is always a risk that somehow you would be able to open the door of a cockpit, of a nuclear plant, or of a meeting room...it doesn't matter.
I understand that I don't understand the question--