Plain English Meaning
Flying maneuvers like loops, rolls, and spins that go beyond what's needed for normal flight. They involve sharp changes in the aircraft's position or unusual forces on the airplane.
Full Definition
An intentional maneuver involving an abrupt change in an aircraft's attitude, an abnormal attitude, or abnormal acceleration, that is not necessary for normal flight. Examples include loops, rolls, spins, and similar maneuvers. Acrobatic flight is regulated under 14 CFR Part 91 and is prohibited in certain airspace and below specified altitudes, and requires the use of parachutes when carrying passengers.
Context Anchor
You will see this term in FAA rules, aircraft operating limitations, and discussions about what maneuvers an aircraft is to .