| Acronym | Meaning |
| PATP | Preliminary Authority To Proceed |
| S-N | Stress Number |
| EMS | Electromagnetic Susceptibility |
| VA | Vibro-Acoustic Test |
| VSA | Variable Stability Aircraft |
| NSTL | National Space Technology Laboratories |
| PI | Pen And Ink (Document Update) |
| NUL | Non-GSE Utilization List |
| DDS | Documentation Distribution System |
| P/Y | Pitch/Yaw |