| Acronym | Meaning |
 | MSU | Mass Storage Unit |
| PGHM | Payload Ground Handling Mechanism |
| NORMAL | To ZNormal To Z-Axis |
| SSITP | Shuttle System Integrated Test Plan |
| IFTM | In-Flight Test Maintenance |
| LVLH | Local Vertical/local Horizontal |
| CC | Crew(s) Certified |
| RGRMA | Rate Gyro Redundancy Management Algorithm |
| PCU | Process Control Unit |
| FRRID | Flight Readiness Review Item DescriPtion |
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