| Acronym | Meaning |
| TT&C | Tracking Telemetry And Control |
| SCLM | Stability |
| AES | Atmospheric Exchange System |
| MFG | Manufacturing |
| PDRS | Payload Data And Retrieval System |
| DOT/CIAP | DOT Climatic Impact Assessment Program |
| RTCP | Real-Time Communications Processor |
| MAIDS | Multipurpose Automatic Inspection And Diagnostic |
| OMMH | Orbiter Maintenance Man-Hours |
| RMC | Redundancy Management Control |