| Acronym | Meaning |
 | MWP | MMWP Maximum Working Pressure |
| FFC | Final Flight Certification |
| STC | Systems Test Complex |
| SRA | Spin Reference Axis |
| PGSE | Payload Ground Support Equipment |
| OCH | Orbiter Common Hardware |
| MSG | Mechanical Subsystem Group |
| POL | Petroleum, Oil, And Lubricant |
| DCIB | Data Communication InPut Buffer |
| PAR | Precision Approach Radar |
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