| Acronym | Meaning |
 | GCD | Gyrc)-Compass |
| MSL | Mechanical System(s) Laboratory |
| BLV | Bleed Valve |
| OD | Operations Directive |
| RS | Right Side |
| FMR | Field Modification Request |
| SMTAS | Shuttle Model Test And Analysis System |
| SEO | Special Engineering Order |
| PICRS | Program Information Control And Retrieval System |
| CF | Center Forward |
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