| Acronym | Meaning |
 | FRC | Flight Research Center |
| TVC | Thermal Vacuum Chamber |
| STLOS | Star Line Of Sight |
| PORCN | Production Oi-der Records Change Notice |
| CIDR | Critical Intermediate Design Review |
| VMF | Vertical Maintenance Facility |
| TO | Operations Management (KSC Directorate) |
| EL | Engineering Instruction |
| HISAM | Hardware Initiated Standalone Memory |
| MARS | Martin Automatic Reporting System |
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