| Acronym | Meaning |
| IMDB | Integrated Maintenance Data Base |
| ECO | Engine Cutoff |
| FDL | Flight Director Loop |
| SIS | Systems Integration Schedule |
| EMP | EquiPment Mounting Plate |
| VGOR | Vehicle Ground Operation Requirements |
| RALPH | Reduction And Acquisition Of Lunar Pulse Heights |
| CC | Channel Controller |
| V/H | VelocitY-to-Height |
| NGM | NNGM Nitrogen Generation Module |