| Acronym | Meaning |
 | MTO | Modification Task Outline |
| SOC | Simulation Operation ComPuter |
| OSF | Office Of Space Flight (now OSTS) |
| ULT | Ultimate |
| GTI | Grand Turk Island |
| MDCS | Maintenance Data Collection System |
| FFBD | Functional Flow Block Diagram |
| OPGUID | OPtimum Guidance (Technique) |
| RR | Respiration Rate |
| CHR | Cooper-Harper Rating |
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