| Acronym | Meaning |
 | COBOL | Common Business Oriented Language |
| FCA | Fluids Control Assembly |
| CSDF | Central Source Data File |
| SSA | 1/0 GCOS Program Element Name |
| PHMC | Probe Heater Motor Controller |
| ISTF | Integrated System Test Flow |
| CCTV | Closed-circuit Television |
| TP | Test Procedure |
| QVVT | Qualified Verification Vibration Testing |
| SDS | Steering Damping System |
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