NTSB already notes long-standing issues with all aircraft, all you need to do is read. Airbus for example has a flaw in the A300-600 line where the tailfin can get ripped off due to bad rudder manufacture, that's been around and still exists since the turn of the millennia. My pal consistently bitches about having to do constant preventative work on that section of that line of planes (he's an Airbus engineer.)