| Acronym | Meaning |
 | HITS | High Rate Multiplexer InPut/Output Test System |
| PERT | Program Evaluation Review Technique |
| LPLWS | Launch Pad Lightning Warning System |
| OIVS | Orbiter Interface Verification Set |
| CCC | Communication(s) Control Console |
| OFDS | Oxygen Fluid Distribution System |
| PD | Pitch Down |
| COFW | Certificate Of Flight Worthiness |
| MC | Memory Configuration |
| CRSI | Ceramic Reusable Surface Insulation |
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