| Acronym | Meaning |
| EPRN | Emergency Program Release Notice |
| RCCP | Recorder And Communications Control Panel |
| PMON | Performance Management Operations Network |
| FCS | Flight Control System |
| E | LACS Extended Life Attitude Control System |
| TGS | Telemetry Ground Station |
| LG | Length |
| PGNCS | Primary G&N And Control System (Subsystem) |
| OIVS | Orbiter Interface Verification Set |
| MEA | Main Electronics Assembly |