| Acronym | Meaning |
| W/G | Water/Glycol |
| S | TRKStar Tracker |
| GUIDO | Guidance Officer |
| SSO | Subsystem Operation (in Spacelab) |
| EDV | Electronic Depressurizing Valve |
| GTI | Grand Turk Island |
| FRFT | Flight Readiness Firing Test |
| PTIS | Program Test Input System |
| SLCL | ShoP/Lab Configuration Layout |
| D | LSC DLTRData Link Terminal Repeater |