STANDARD MAINTENANCE PRACTICES MINIATURE/MICROMINIATURE (2M) ELECTRONIC ASSEMBLY REPAIR
https://www.robins.af.mil/Portals/59/documents/technicalorde...
I was a solder tech in the Navy. That was our Bible.
I wonder which ones came first given how much aerospace is miltary work.
The final straw was when I saw someone using a wire brush on a Metcal tip after reading one of these mil spec guides.
I was production engineer defence sector for a few years.
We worked in R&D and all (Multibus II) boards were hand-soldered and had to be visually inspected by a supervisor before testing.
One chap presented his board for checking and, after a visual and touch inspection, our supervisor said that some of the joints were a bit 'pointy' and would need fixing.
So off went the student to the fab area of the workshop, the board was put in a vice and I just stopped him as he approached the bench with a sandpaper-wrapped block of wood.