| Acronym | Meaning |
| TW | Tailwind |
| VR | Variable Reluctance |
| ERSI | Elastomeric Reusable Surface Insulation |
| PLSS | Portable Life Support Subsystem |
| DBCI | DB With Respect To A Circular Polarized Antenna |
| OF | Operational Instrumentation MDM-FWD |
| SVA&C | Shuttle Vehicle Assembly And Checkout |
| I | ECO Inboard Engine Cutoff |
| EBW | Electron Beam Welding |
| SSL | System Software Loader |