Quote Originally Posted by DRGT View Post
The airplane must be in a skidding turn to spin.
I think you are confusing the matter by using the term "skid" to mean uncoordinated flight in EITHER direction. That's not technically correct. In simple terms, a skid is a specific condition where too much rudder is applied in a turn and the ball is forced to the outside of the turn. If the ball is off center to the INSIDE of the turn, that's a slip, not a skid.

You are correct is as much as the airplane has to be in uncoordinated flight in order to spin, but it may be skidding OR slipping, depending on which way the ball is being deflected. Either way, as I stated in my previous post, keep the ball in the center and you're not going to spin.