| Acronym | Meaning |
| FML | Final Materials List |
| SSEOS | Space Shuttle Engineering And Operations Support |
| EMCD | Electro-Mechanical Control Diagram |
| EPDU | Electrical Power Distribution Unit |
| OBS | Observe |
| VCT | Voltage Control Transfer |
| MECF | Main Engine Computational Facilities |
| DODD | Department Of Defense Directive |
| FCA | Functional ComPatibility Analysis |
| OB | Operational Base |