ok...now i guess is a good time to ask this. first lemme preface my question by saying im only a dumb sh-t regional pilot...but can someone smarter than me please clarify why i keep hearing and reading since 3407 how regionals and mainline operate on two different sets of rules...arent all flights conducted under FAR Part 121? arent all pilots trained and tested to ATP standards? what am i missing? which rules are different?