Plain English Meaning
Training where a pilot deliberately flies the airplane through extreme maneuvers, like rolls, loops, and steep nose-up or nose-down attitudes, to learn how the airplane behaves and how to control it well outside the normal flight range.
Full Definition
Flight instruction in intentional maneuvers involving an abrupt change in aircraft attitude, abnormal attitudes, or abnormal acceleration, conducted in an aircraft certificated for aerobatic flight and flown by or under the supervision of a qualified instructor. It develops pilot skills in handling the airplane through the full range of attitudes and load factors, including inverted flight, beyond those used in .