I've been doing a little research into this myself as I'd like more information on how to determine private vs. common carriage. I read AC 120-12A which references the regs of common carriage consisting of holding out (advertizing), transporting stuff, from point A to B, for $.
That makes it pretty easy to me.
Is it really this simple? because it seems like every time the subject comes up there's a big debate on things. Seems to me like you just need a checklist which consists of:
did I advertize?
to move stuff in an airplane?
from here to there, for money.
Am I missing something or do I need more resources to make this make more sense?