Well, contraildash already provided you with the quote from the aircraft manual that says "no". I was out there with him, so I know he's not making this shit up. Also, the MC-12 doesn't even have a g-meter, so how do you know you stayed in limits during a maneuver? Maybe the seat of your pants is that finely tuned? Seriously, aerobatics in a T-tail crew airplane with all kinds of shit poking out of the fuselage and a wierd CG when the manual says "no aerobatics"? AF wide FCIF may be overkill, but if 2 dudes actually barrel-rolled a McDozen then they are in the wrong. And bad on the backenders for not raising hell when the pilots started talking about doing this nonsense.