| Acronym | Meaning |
 | SIR-A | Shuttle Imaging Radar@A |
| PDS | Problem Data System |
| I | NTC/0INTC/0Integrated Checkout |
| PRS | Payload Retention Subsystem |
| PWMD | Printed Wiring Master Drawing |
| LD | Lateral Direction |
| H/S | IR Hardware/Software Integration Review |
| VITT | Vehicle Integration Test Team |
| LMG | Left Main Gear |
| MD | Manual Direct |
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