| Acronym | Meaning |
 | BCE | Backup Control Electronics |
| SRB | Solid Rocket Booster |
| ECS | Engine Control SYstem |
| SSS | Station Set Specification |
| MMS | Multimission Modular Spacecraft |
| CSE | Common Support EquiPment |
| CCC | Central Computer Complex |
| OMSF | Office Of Manned Space Flight (now OSTS) |
| MACH | Velocity Relative To The Speed Of Sound |
| TMP | Time Management Processor |
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