| Acronym | Meaning |
| FO | Fail Operational |
| SMD | Special Measuring Device |
| TCN | Transportation Control Number |
| IPS | Interface Requirement List |
| SL | SPacelab |
| VISC | Viscosity |
| MGE | Maintenance Ground Equipment |
| PRD | ProcurementRequirementsDocument |
| FS | Fail To Sync |
| OIS | Operational Intercommunication System |