| Acronym | Meaning |
| MPTA | Main Propulsion Test Article |
| ICC | Intercomputer Communication |
| K-SLPS | KSC Spacelab Project Specification |
| TVA | Thrust Vector Alignment |
| CDMS | Command And Data Management System |
| CCD | Checkout Command Decoder |
| IUS | Interim/intermediate UPper State |
| DERIGID | Derigidize |
| ME | Main Engine |
| GOR | GrGORGround Operations Review |