| Acronym | Meaning |
 | ESTA | Electronic System Test Equipment |
| MI | Mile |
| FCOS | Flight Computer Operating System (Orbiter) |
| MCIU | Manipulator Controller Interface Unit |
| VMF | Vertical Maintenance Facility |
| R | Range Rate |
| VSWR | Voltage Standing Wave Ratio |
| PTM | Pulse Time Modulation |
| QM | Qualification Motor |
| SCF | Standard Cubic Feet |
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