| Acronym | Meaning |
 | CR | Certification Requirement |
| STD | LStandard Distribution List (letter Denoting Which List |
| K-SLM | KSC Spacelab Plan/Requirement |
| OPBOV | Oxidizer Preburner Oxidizer Valve |
| EMD | Entry Monitor Display |
| O/R | Oxygen Relief |
| PCEM | Propulsion Contamination Effects Module |
| CRT | Cathode-Ray Tube |
| SRB | Solid Rocket Booster |
| TSW | Test Switch |
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