Definition
A condition in which a component or aircraft exceeds its maximum design or certified speed limit. In propeller-driven airplanes, it most commonly refers to the propeller or engine turning faster than its rated RPM. In airframe terms, it refers to the airplane exceeding its maximum operating airspeed (such as VNE, the never-exceed speed).
Plain English
Something is going faster than it is designed or allowed to go — either the engine and propeller spinning too fast, or the airplane flying too fast.
Context Anchor
Pilots encounter this term in airspeed limits, descents, engine and propeller indications, warning systems, and maintenance reports.
Why Pilots Care
Immediate reduction of power or airspeed is required to prevent structural damage or loss of control.
Intuition Check
Overspeed does not just mean “fast.” It means faster than the approved limit for the aircraft or part involved.
Example Sentence 1
During the steep descent, the pilot reduced power to avoid an airframe overspeed.
Example Sentence 2
Continued flight past Vne places the airframe in an overspeed that may cause permanent damage.