There's also stuff like this, where a bad repair 20+ years ago eventually leads to structural failure: * https://en.wikipedia.org/wiki/China_Airlines_Flight_61

There's also stuff like this, where a bad repair 20+ years ago eventually leads to structural failure: * https://en.wikipedia.org/wiki/China_Airlines_Flight_611 https://en.wikipedia.org/wiki/China_Airlines_Flight_611 This one only took 7 years from a bad repair until catastrophic failure though: * https://en.wikipedia.org/wiki/Japan_Air_Lines_Flight_123 https://en.wikipedia.org/wiki/Japan_Air_Lines_Flight_123 So "repair stuff properly" seems to be the important thing there. ;)