I do not now nor have I ever worked in aerospace, but I know enough to know that technical manuals are the All Important Document Of The Universe. Technicians are expected to follow manuals in their full, complete, and utter entirety. If the manual says nothing about reinstalling a bolt, you don't reinstall it. No more, no less. Do not pass Go, do not collect $200. Yes, they should be mentioning glaringly obvious issues to Upper Management, but it's not within their power or authority to do anything more or less than exactly what the manual specifies. It doesn't help that they're constantly berated to "follow the manual" regardless of their opinion lest they, their family, and multiple generations of heirs be burned at the stake for heresy. Most of the time it ensures someone doesn't do something stupid like installing lines backwards. Unfortunately, it can also bite you in the ass if something slips past the vetting process (or gets ramrodded through due to incompetence, carelessness, or management buffoonery).
Brad