| Acronym | Meaning |
| CDMS | Command And Data Management System |
| MC | Mission Completion/Continuation |
| VSA | Variable Stability Aircraft |
| CRN | Contract Revision Number |
| PLRD | Payload Requirements Document |
| OMC | Orbiter Maintenance And Checkout |
| RTD | Resistance Temperature Device |
| SDE | Space Division Evaluator |
| RM | Rescue Module |
| PDCR | Proprietary Data Control Record |