| Acronym | Meaning |
 | MM | Main Module |
| ORSDI | Oak Ridge Selective Dissemination Of Information |
| TTA | Thermomechanical Test Area |
| CALC | Calculate |
| FCR | Flight Configuration Review |
| LL | Launch Left |
| PCCP | Preliminary Contract Change ProPosal |
| OL | Operational Left DSC Or MDM |
| TFC | Time From Cutoff |
| DDS | Data Display System |
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