| Acronym | Meaning |
 | FDI | Fault Detection And Isolation |
| PBDM | Payload Bay Door Mechanism |
| ELINT | Electromagnetic Intelligence |
| OMDRI | Operations And Maintainability Data Record |
| MTCU | Magnetic Tape Control Unit |
| PETA | Performance Evaluation And Trend Analysis |
| LCT | Launch Countdown |
| VSWR | Visual Standing Wave Ratio |
| HSS | Hydraulic Subsystem Simulator |
| MCC-DOD | Mission Control Center-DOD |
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