| Acronym | Meaning |
 | OTP | Operations Test Plan |
| OA | Output Axis |
| HMC | Hypergolic Maintenance And Checkout |
| FSS | Flight Support Station (for MMU) |
| MDM | Manipulator Deployment Mechanism |
| ETD | Electrical Terminal Distributor |
| GPS | Ground Power Supply |
| ESA | ExPlosive Safe Area |
| MCP | Monitoring And Control Panel |
| GST | Ground System Test |
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