| Acronym | Meaning |
 | OS | OPtics Subsystem |
| RAAB | Remote Amplifier And Adoption Box |
| CADS | Command And Data Simulator |
| PPS | Pneumatic Power Subsystem |
| SPACE | Spacecraft Prelaunch Automatic Checkout Equipment |
| DUC | Digital Uplink Command |
| OR | Oxygen Relief |
| SCNP | Preliminary Specification Change Notice |
| SCCB | Site Configuration Control Board |
| MTEM | Mechanical Maintenance Test Equipment |
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