| Acronym | Meaning |
| LMS | Inventory Management System |
| VDA | Valve Driver Assembly |
| DPI | Detail Program Interrelationships |
| OT | Operational Trajectory |
| SI | Center Support Operations (KSC Directorate) |
| TS | Test Station |
| OA | Office Of Applications (now OSTA) |
| ECS | Environmental Control System (Subsystem) |
| HRDS | High Rate Data Station |
| CS | Consumables Status |