| Acronym | Meaning |
 | SMC | Scientific ManPower Commission |
| TWT | Trisonic Wind Tunnel (Rockwell) |
| SAMSO | Space And Missile SYstems Organization (USAF) |
| PCDU | Payload Command Decoder Unit |
| MAEP | Minimum Autoland Entry Point |
| RV | Retrieval Vessel |
| PBL | Payload Bay Liner |
| MES | Main Engine Start |
| FSGS | Flare/Shallow Glide Slope |
| SNR | Signal-to-Noise Ratio |
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