| Acronym | Meaning |
| F/F | Fill/Full |
| CL | Coefficient Of Lift |
| LK | Leak |
| OBC | Onboard Computer |
| FCA | Functional Configuration Audit |
| FSK | Frequency Shift Keyed (Keying) |
| DMIA | Dual Multiplexer Interface Adapter |
| CCVA | Chamber Coolant Valve Actuator |
| R | Rehydratable |
| GHA | General Housekeeping Area |