| Specification | ProcessDescription | Category | SpecLimits |
| ASTM E1417 | Standard Practice for Liquid Penetrant Testing | Non-Destructive Testing | Limits: None |
| AWS D17.1 | Fusion Welding for Aerospace Applications | Welding | Limits: GTAW only |
| AWS D17.2 | Resistance Welding for Aerospace Applications | Welding | Limits: None |
| GSS 6203 | Fusion Welding of Steels, Corrosion and Heat Resistant Steels and Nickel | Welding | Limits: None |
| GT 23 A | Fluorescent Penetrant Inspection | Non-Destructive Testing | Limits: Pre-penetrant etch required NGAS approval |
| MIL-STD-2219 | Fusion Welding for Aerospace Applications | Welding | Limits: None |