| Acronym | Meaning |
| NVR | Nonvolatile Residue |
| KYBD | Keyboard |
| SNF | SYstem Noise Figure |
| TPM2 | Terminal Phase Midcourse #2 |
| BSI | Basic Shipping Instructions |
| G&NS | Guidance And Navigation Subsystem |
| FCFM | Flight Combustion Facility Monitor |
| EVLSS | Extravehicular Life Support System |
| DFI | Development Flight Instrumentation |
| PSP | Program Support Plan |