That's not entirely accurate. Pressurized aircraft hulls are limited by the total number of pressurization cycles they can be subjected to. Everything else is r

That's not entirely accurate. Pressurized aircraft hulls are limited by the total number of pressurization cycles they can be subjected to. Everything else is repaired, overhauled, or replaced, but a total overhaul of an airliner haul is just not economically feasible, so at that point the entire aircraft is basically scrapped.