| Acronym | Meaning |
 | SG | Gnal Generator |
| LPFTP | Low Pressure Fuel Turbopump |
| CPF | Cargo Processing Facility |
| EL | Electromagnetic Interference |
| NCC | Network Control Center (GSFC) |
| LS | Limit Switch |
| PGHM | Payload Ground Handling Mechanism |
| STA | Structural Test Article |
| SCCH | Standard Cubic Centimeters-per Hour |
| STU | Special Test Unit |
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