| Acronym | Meaning |
 | RST | Recessed Selectromatic Terminal |
| LRU | Line Replaceable Unit |
| VL | Expendable Vehicles (KSC VO Dir.) |
| HCMM | Heat Capacity Mapping Mission |
| HFX | High Frequency Transceiver |
| NCC | Network Control Center (GSFC) |
| PH | Personal Hygiene |
| SYNCOM | Synchronous Communication Satellite (Hughes) |
| EDLN | Engineering DeveloPment Logic Network |
| ST | Spacelab Technology |
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