| Acronym | Meaning |
| STR | Structure |
| DMC | Data Management ComPuter |
| CCAFS | Cape Canaveral Air Force Station |
| S/U | Set Up |
| EODB | End Of Data Block |
| SL-SSS | Spacelab Subsystem(s) Segment |
| MSO | Model For Spare(s) OPtimization |
| NG | NNG Narrow Gage |
| I | ECO Inboard Engine Cutoff |
| TCRSD | Test And Checkout Requirements Spec. Documentation |