| Acronym | Meaning |
| BCE | Bus Control Element |
| ERSIR | Earth Resources Shuttle Imaging Radar |
| O&C | Operations And Checkout |
| PDV | Pressure Disconnect Valve |
| GEDAC | General Electric Detection And Automatic Correction |
| COLM | Column |
| PBM | Program Business Management |
| GACU | Ground Avionics Cooling Unit |
| CS | Core Segment |
| HRS | Hours |