| Acronym | Meaning |
| LWS | Lightning Warning System |
| DC | Digital Command Assembly |
| PSI | Power Static Inverter |
| EGIL | Electrical |
| SSOP | Space Systems Operating Procedure(s) |
| SPADS | Shuttle Problem Analysis Data System |
| DI | Display Interface Processor (Software Functional Element) |
| MTR | Magnetic Tape Recorder |
| PB | Preburner (P/B Preferred) |
| SDVF | Software DeveloPment And Verification Facilities |