| Acronym | Meaning |
| DPN | L Distribution Panel |
| PVT | Pyrotechnic Verification Test |
| STS | Space Transportation System |
| MAEP | Minimum Autoland Entry Point |
| EMEC | Electromagnetic Effects Compatibility |
| SES | SPecial Emphasis Study |
| FM/FM | Frequency Modulation/Frequency Multiplexing |
| SP | Single Pole |
| CPM | ComputerProgramModule |
| NMAB | National Materials Advisory Board |