| Acronym | Meaning |
| IAD | Interface Agreement Document |
| TW | Thumbwheel |
| QM | Qualification Motor |
| PAF | Payload Attach Fitting |
| PMT | Production Monitoring Test |
| TPR | Teleprinter |
| ECRA | Engineering Change Request/Authorization |
| OP | Operate |
| E | LACS Extended Life Attitude Control System |
| ICDU | Inertial CouPling Data Unit |