| Acronym | Meaning |
| TP | Time To Perigee |
| RDY | Ready |
| EFFGRO | Efficient Growth (Computer Program) |
| HCMM | Heat Capacity Mapping Mission |
| EMRL | Equipment Maintenance Requirements List |
| NW | Nose Wheel |
| SLEMU | SPacelab Engineering Model Unit |
| QUADS | QualitY Achievement Data SYstem |
| D/L | Downlist |
| ERR | Error |