| Acronym | Meaning |
 | R | Redundant |
| SPIMS | Shuttle Program Information Management System |
| GG | Gravity Gradient |
| RTD | Rate Damping |
| LL | Long Line |
| CSS | Control Stick Steering |
| RTCC | Real-Time Computer Center (NASA) |
| ODF | Orbit Determination Facility |
| QCDR | Quality Control Deficiency Report |
| IPB | Illustrated Parts Breakdown |
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