An engine used or intended to propel aircraft, including turbosuperchargers and accessories but not including propellers, is called a(n)?

• A. Aircraft Engine
• B. Propulsion System
• C. Powerplant
• D. Engine Assembly

Answer: (A)

Powerplant refers to the engine and its accessories that provide propulsion for the aircraft. This term is used because it includes not only the engine itself but also components like turbosuperchargers and other accessories that generate the power needed to propel the airplane, while excluding the propeller, which is the thrust-producing hardware rather than the power source. In aviation terminology, powerplant is the precise label for the propulsion unit as a whole. While “aircraft engine” is familiar, the official term emphasizes the entire system that produces power. The other options describe broader or different concepts: a propulsion system often includes the propeller, and an engine assembly is more about the mechanical build rather than the complete propulsion unit.