| Acronym | Meaning |
| HID | Hardware Interface Device |
| CFMF | Crip Flow Management Facility |
| T | Thermostabilized |
| RGP | Rate Gyro Package |
| CIS | Communications Interface System |
| MMACS | Maintenance Management And Control System |
| DFCS | Digital Flight Control Software (System) |
| STADAN | Space Tracking And Data Acquisition Network |
| PDP | Project Definition Phase |
| CEIT | Crew Equipment Integration Test |