| Acronym | Meaning |
| TR | Time To Retrofire |
| MI | Mile |
| OPT | Optics |
| VC | Velocity Counter |
| MOC | Mission Operations Computer |
| TPM2 | Terminal Phase Midcourse #2 |
| MM | Main Memory |
| SMS | Shuttle Mission Simulator |
| H | EPAHigh Efficiency Particle Air (Filter) |
| FOPG | Flight Operations Planning Group |