[maples37]

One consideration for aviation is that they have inspections, replacements, repairs, etc regulated like crazy. And I suspect it's regulated so tightly because it would be skipped otherwise, because that does NOT sound cheap.

Then compare that to an average car. If you change your own oil (like I do), it's possible to go multiple years in between trips to a repair shop for bigger items like tires or a weird noise that popped up.

And let's be honest, a large number of people will hear a weird noise and drive with the check-engine light on for way longer than any manufacturer would recommend (even if they didn't have a profit motive in the form of expensive dealership repair shops). If the machine gets to point B, then whatever that noise is can wait a few more days/weeks.