| Acronym | Meaning |
| MCO | Mission Control Operations |
| SAS | StabilitY Augmentation SubsYstem |
| RFO | Request For Order |
| EVCS | Extravehicular Communications System |
| BER | Bit Error Rate |
| VDT | Vehicle Data Table |
| CRG | Change Review Group |
| SW | Software (SFTWE Preferred) |
| ISTF | Integrated System Test Flow |
| H | AlH AlHorizontal |