| Acronym | Meaning |
| CKT | Circuit |
| COMP | Component |
| LC | Intercomputer |
| NSW | NSP Status Word |
| EBCDC | Extended Binary Coded Decimal |
| ELS | Earth Landing System (Subsystem) |
| DPP | Deployment Pointing Panels |
| TO | Operations Management (KSC Directorate) |
| CDSC | Communications Distribution And Switching Center |
| ELDV | Electrically Operated Depressurization Valve |