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> Engines are actually changed fairly frequently

A modern turbofan can run for 20,000+ hours on-wing before removal for overhaul. That's longer than many car engines last in total.






Most cars don't operate for >12 hours a day every day. Last time I randomly checked the flight history of a Ryanair 737 on flightradar24, it had spent over 18 and a half of the previous 24 hours airborne.

Same with trains. If they don’t run, they start to lose a lot of money for the operator really fast.



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