Every plane, as well as every engine, has its own lifetime. Engine’s lifetime is measured in working hours, and airframe’s lifetime – in the number of takeoffs and landings. After the end of lifetime, an engine can be demounted and replaced by a new one, but an airframe is often disposed. Here is one of the military boneyards, where disposed MiGs are stored.
Mounting section of the engine.
Some more equipment…
Nitrogen charging and control schedule.