| Acronym | Meaning |
 | PTMS | Precision Torque Measuring System |
| IEA | Integrated Electronic Assembly |
| CMTS | Computerized Maintenance Test System |
| TOS | Test Operating System |
| ROD | Remote Operated Door(s) |
| WTSC | Wet Tantalum Slug Capacitor |
| RECS | Representative Shuttle Environmental Control System |
| FRL | Fuselage Reference Line |
| NCI | Phasing Maneuver |
| ICDR | Incremental Critical Design Review |
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