| Acronym | Meaning |
| IMD | Intermediate |
| BSM | Booster Separation Motors |
| MDCS | Material Data Collection System |
| FSU | Freon Servicing Unit |
| SSRN | System Software Reference Number |
| ECP | Engineering Control Proposal |
| DCS | Display And Control System |
| PMS | Performance Management System |
| RBC | Rotating Beam Ceilometer |
| HFC | Heat Flow And Convection |