Unlike some codebases, aircrafts actually have mandated maintenance. Which is why most accidents are due to human error and not massive technical failures.
(That's a feature, not a bug! The pervasive checklists and general professionalism mean that most 'normal' human errors are recovered from without enough consequences to make it into the news.
So only the really unlucky and incompetent are what we usually hear about.)
Unlike some codebases, aircrafts actually have mandated maintenance. Which is why most accidents are due to human error and not massive technical failures.