Aircraft engines are an indispensable part of an aircraft, creating the ability for heavier-than-air flight for many planes, both small and large. They most often come in the form of piston engines and gas turbines, though some may be electric. In both piston engines and gas turbines, propulsion for flight is achieved through the combustion of fuel, and then the various engine parts work together to generate mechanical power. While aircraft engines are very advanced and well developed, they still face problems just like any other machine and are prone to failures over time with constant use. When these instances happen, it can pose issues affecting time and money to get them back up and running. While one could simply replace an engine, there are various benefits to having an engine rebuilt instead. In this blog, we will discuss some of the common reasons that engines fail, as well as the benefits of rebuilding them instead of replacing them.