| Acronym | Meaning |
| MEP | Management Engineering Program |
| PACC | Problem Action Control Center |
| SPFA | Single Point Failure Analysis |
| EGRS | Egress |
| FTC | Flight Test Conductor |
| SLC | ERNO SPacelab Project Control |
| JB | Junction Box |
| ESS | Essential |
| MTC | Master Thrust Controller |
| OD | Operational Downlink/Downlist |