| Acronym | Meaning |
 | SPAD | Subsystem Positioning Aid Device |
| ISS | Installation Support Services |
| OTC | Orbiter Test Conductor |
| STF | Spin Test Facility (see DSTF) |
| SLN | ERNO SPacelab Payload |
| TDD | Task Description Document |
| RGP | Rate Gyro Package |
| MSE | Maintenance Support Equipment |
| ECA | Electronics Control Assembly |
| COFR | Certificate Of Flight Readiness |
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