Even with a $100 million airplane, we still get quality escapes.
Sometimes, all we can do is issue a "Special Inspection and Rectification" Service Bulletin.
That may result in a successfully examined part getting a part number suffix added or some such, and new production getting a part number roll.
If safety of flight is affected, airworthiness authorities will mandate the SB with an Airworthiness Directive.
Doesn't matter the size of the company or the value of the product, $h!t does happen.