| Acronym | Meaning |
 | TCTI | Time Compliance Technical Instruction |
| CCBD | Configuration Control Board Directive |
| LOFO | Low Frequency Oscillation |
| STAB | Stabilize |
| NCGS | Nuclear Criteria Group Secretary |
| SPS | Secondary Propulsion System |
| OCN | Order Control Number |
| F/R | Flared Rudder |
| OL | Open Loop |
| OLSA | Orbiter/LPS Signal Adapter |
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