| Acronym | Meaning |
| TCI | Technical Critical Item |
| TSS | TPS Summary Sheet Control |
| TWTA | Traveling Wave Tube Amplifier |
| PBDM | Payload Bay Door Mechanism |
| MTEF | Fluid Maintenance Test Equipment |
| QA | Quality Assurance |
| DABS | Discrete Address Beacon SYstem |
| PR | PulseRate |
| PCTR | Pad Connection Terminal Room |
| SSO | Safety Signification Operation |