| Acronym | Meaning |
 | FCC | Federal Communications Commission |
| OVCO | Operational Voice Communication Office |
| PSA | Pre/Post Sleep Activity |
| SP-PMS | Performance Management Systems Office (KSC) |
| POM | Pallet-Only Mode |
| ORR | Operational Readiness Review |
| MMCA | Midbody Motor Control Assembly |
| TIP | Thrust Inlet Pressure |
| PRSDS | Power Reactant Storage And Distribution System |
| NW | NASA Waiver |
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