| Acronym | Meaning |
| ETI | Elapsed Time Indicator |
| PSSP | Payload Specialist Station Panel |
| SSITP | Shuttle System Integrated Test Plan |
| OPT | Optimum |
| SEI | SuPPort EquiPment Installation |
| ET | Elapsed Time |
| UVD | Under Voltage Device |
| ORSDI | Oak Ridge Selective Dissemination Of Information |
| ROT | Rotate |
| PIL | Procurement Instrument Identification |