| Acronym | Meaning |
| RPSF | Rotation |
| SEM | System Engineering Management |
| DEC | Declination |
| FTS | Functional Test Specifications |
| MS | Machine Screw |
| EBO | Eyeballs Out (-GX) |
| OD | Operational Downlink/Downlist |
| MPS | Material Processing Specification |
| HID | Hardware Interface Device |
| HFT | Horizontal Flight Test |