| Acronym | Meaning |
 | DPP | Discrepancy R12POrt |
| SWT | Sextant |
| DY | Deputy Director (KSC Directorate) |
| RTE | Responsible Test Engineer |
| MSV | Monitored Sine Vibration (Test) |
| PORCN | Production Oi-der Records Change Notice |
| TP | Transition Period (T.P. Preferred) |
| LOS | Lift-Off Simulator |
| USBI | United Space Booster |
| OPO | Orbiter Project(s) Office |
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