Back in my days in the aviation world, we had “D-Checks”, where we were required to complete gut the aircraft, in order to thoroughly inspect critical areas. Obviously it was a HUGE effort, but thankfully only had to be done every 8 years or so.
I’m getting to think here that non-DEI D-Checks might be required on these planes, as bolts are likely used in multiple places on this plane.
Back in my days in the aviation world, we had QA inspectors that had to sign off on all stages of assembly and record serial numbers of calibrated torque wrenches used and who used it. I guess they don’t do that silly stuff any more...costs time and time is money.................