Hey in general construction I couldn’t close a wall until the framing, wiring and any other services were inspected so I find it hard to believe that something so much more critical like an aircraft doesn’t require a final inspection before sealing an are up, people need to be fired.
I did field engineering work on boilers and power plants for five years. We never buttoned anything up until we knew it was all shipshape. We especially accounted for all personnel.