| Acronym | Meaning |
| DCC | Digital Communications And Control Unit |
| LC | Intercom (Orbiter To Ground Via Hardline) |
| TVTA | Thermal Vacuum Test Article |
| LER | Long Eye Relief (Optics) |
| TRS | Time Reference System |
| SSS | Subsystem Segment |
| MSF | Manned Space Flight |
| QACAD | Quality Assurance Corrective Action Document |
| SLI | ERNO Spacelab Integration And Test |
| FET | Field Effect Transistor |