| Acronym | Meaning |
| EMN | Engineering Management Network |
| MLL | MDM Launch Left |
| DMG | Data Management Group |
| PASS | Primary Avionics Software System |
| PEP | Power Extension Package |
| FPIF | Fixed Price Incentive Fee |
| GPI | Ground Position Indicator |
| MSLD | Mass Spectrometer Leak Detector |
| EPL | Emergency Power Level |
| TC | Test Conductor (Contractor) |