| Acronym | Meaning |
| BP | C-to-CComputer-to-Computer |
| DTRD | Development Test Requirements Document |
| DHS | Discrete Horizon Sensor |
| EHF | Extremely HighFrequency |
| PIC | Pyrotechnic Initiator Controller |
| DA&D | Data Acquisition And Distribution |
| ISS | Instruction Summary Sheet |
| POE | Proximity OPticai Device |
| ME | Main Engine |
| E | LSSEmergency Life Support System |