| Acronym | Meaning |
 | S/A | Subassembly |
| RJEC | Reaction Jet Engine Control |
| MS | Mass Spectrometer |
| TCTO | Time Compliance Technical Order |
| FTS | Federal Telecommunications System |
| MSA | Material Service Area |
| SCLM | Stability |
| MSS | Mechanical Support Systems |
| SMQ | Structure Module Qualification Test |
| MSFC | George C. Marshall SPace Flight Center |
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