For engines, the time between overhauls is generally a function of the complexity of the engine and how it is used. Piston-based engines are much more complex than turbine-powered engines, and generally have TBOs on the order of 1,200 to 2,000 hours of running time.
The time frame for engine maintenance depends on the complexity of the engine and its operational conditions. Piston-driven engines tend to be more intricate than turbine-powered engines, typically requiring maintenance at intervals of around 1,200 to 2,000 hours of running time.