Which is why airline engines are stripped and rebuilt practically from scratch on a federally regulated schedule. There is a federal agency that exists solely

Which is why airline engines are stripped and rebuilt practically from scratch on a federally regulated schedule. There is a federal agency that exists solely to maintain safety in air travel, and maintenance of aircraft is very highly regulated. Law of large numbers, sure -- there are bound to be incidents. But in industries like air travel there are checks against machines operating for 11 months in unsafe conditions.