| Acronym | Meaning |
| CVAD | Converter |
| CEA | Control Electronics Assembly (for MMU) |
| MTO | Modification Task Outline |
| TBF | Test De Bon Fonctionnement (Spacelab) |
| FSR | Final System Release |
| BDC | Bi-Directional Converter |
| ORDC | Orbiter Data Reduction Center |
| CP | Circular Pitch |
| CIA | Controller Interface Assembly |
| RCSC | Reaction Control Subsystem Controller |