| Acronym | Meaning |
| PDB | Power Distribution Box |
| SCB | Selection Control Board |
| OPF | Orbiter Processing Facility |
| MOPI | Max Rate Output Initiator |
| MMCA | Midbody Motor Control Assembly |
| VIS | Visual |
| EGC | Experiments Ground Computer |
| DECR | Decrease |
| HAL/S | High Order Programming Language For Spacelab Usage |
| HCF | High Cycle Fatigue |