| Acronym | Meaning |
| PHMC | Probe Heater Motor Controller |
| NWS | Nose-Wheel Steering |
| GCV | Gaseous Oxygen Control Valve |
| FSS | Flight Support System |
| PROB | Problem |
| TRA | Training Requirei-nents Analysis |
| PRACA | Problem Reporting And Corrective Action |
| DP | Delayed Procurement |
| SDP | Software Development Plan |
| MVGVT | Mated Vertical Ground Vibration Test |