| Acronym | Meaning |
| RHS | Rocketdyne Hybrid Simulator |
| MGVT | Mated Ground Vibration Test |
| EPOC | External Payload Operations Center |
| CS | Spacelab Operations Directorate |
| MCBF | Mean Cycle Between Failures |
| ELMS | Elastic Loop Mobility System |
| CRSVR | Crossover |
| SV | Selenoid Valve |
| OCM | Organic Content Monitor |
| M | ITTSE Mobile Lgor Tracking Telescope System |