| Acronym | Meaning |
| LSU | Life Support Umbilical |
| PIC | Pyro Initiator Controller |
| ORCHIS | Oak Ridge Computerized Hierarchical Information |
| CCC | Contaminant Control Cartridge |
| HG | High Gain |
| INTCHC:IR | Interchanger |
| GNCS | GuGNCSGuidance And Navi-oation Control System |
| HB | Handbook |
| MDA | Main Distribution Assembly |
| SC | Statement Of Compatibility |