| Acronym | Meaning |
| TCP | Test Checkout Procedure |
| FF | Flight Forward |
| RTG | Radioisotope Thermoelectric Generator |
| ETCO | Equipment Transfer/Change Order |
| MOD | Module |
| URN | Urine |
| FDS | Flight Dynamics Simulator |
| MWP | MMWP Maximum Working Pressure |
| M+R | Maintenance And Refurbishment |
| HITS | High Rate Multiplexer InPut/Output Test System |