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.
For engines, the interval between overhauls is typically determined by the engine's complexity and usage patterns. Piston-based engines are more intricate than turbine-powered engines, with typical TBOs ranging from 1,200 to 2,000 hours of operation.