| Acronym | Meaning |
| DCC | Digital Communications And Control Unit |
| HTC | Hybrid Technol Ogy ComPuter |
| PAS | Primary Ascent System |
| IITCS | Igloo Internal Thermal Control Section |
| SATO | Shuttle Attached Teleoperator |
| MCLT | Maximum Cruise Level Thrust |
| JPP | Joint Program Plan |
| TE | Time Earliest/Expected |
| EPROM | Erasable Programmable Read Only Memory |
| T/L | Transformer Load |