| Acronym | Meaning |
| TIC | Technical Information Center |
| HFCT | Hydraulic Flight Control Test |
| PTMS | Precision Torque Measuring System |
| B/O | Breakout |
| DPP | Data Processing System (Subsystern) |
| ISR | Initial System Release |
| DDC | Data Distribution Center |
| HDA | Housekeeping Data Acquisition |
| SS | Single String |
| SG | LSSpace Ground Link Station |