| Acronym | Meaning |
 | CSCSAT | Commercial Synchronous Communication Satellite |
| FC | Flight Critical |
| FAR | Federal Aviation Regulation |
| PSDP | Payload Station Distribution Panel |
| SCU | Secondary Control Unit |
| MIB | Master Interconnect Board |
| M | Million |
| ISIL | Interim Support Items List |
| TSR | Test Status Report |
| ORDC | Orbiter Data Reduction Center |
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