| Acronym | Meaning |
| MCT | Maximum Climb Thrust |
| HC | Head Count |
| CKAFS | Cape Kennedy Air Force Station (Changed To CCAFS) |
| HSTP | Hard Stop |
| CCBD | Configuration Control Board Directive |
| SSC | Subsystem Sequence Controller |
| HECV | Helium Check Valve |
| VDI | Vendor Documentation Inventory |
| FA | Final Assembly |
| HE | Heat Exchange (Exchanger) |