| Acronym | Meaning |
| SRSS | Shuttle Range Safety System |
| KOI | Kano |
| MPR | Maintainability Problem Report |
| EC | Events Controller |
| LSO | Landing Support Officer |
| RFO | Request For Order |
| HRSI | High-temperature Reusable Surface Insulation |
| ICW | Interrupted Continuous Wave |
| TSGP | Test Sequence Generator Program (ESTEC) |
| ISS | Instruction Summary Sheet |