| Acronym | Meaning |
| QCOP | Quality Control Operating Procedure |
| FC | Fuel Cell |
| GC | Gigacycles (1000 Megacycles) |
| FCOS | Flight Computer Operating System (Orbiter) |
| PDP | Preliminary Definition Plan |
| SC | Support Contractor |
| GT | Gyro Torque |
| BSM | Booster Separation Motors |
| BCP | Base Condemnation Percent |
| VATA | Vibro-Acoustic Test Article |