| Acronym | Meaning |
| FD | WMR Food Warmer |
| PDS | Package Data System |
| SP-FGS | Flight And Ground Systems Office (KSC Shuttle) |
| EHC | Electrical Heating Control |
| EDLN | Engineering DeveloPment Logic Network |
| FM/PM | Frequency Modulation/Phase Modulation |
| ICCP | Interface Coordination And Control Procedure |
| TU | Transport Unit |
| RVN | Requirements Verification Network |
| TMP | Time Management Processor |