| Acronym | Meaning |
 | ECO | Engine Combustion |
| U/L | Uplink (UPLK Preferred) |
| LOCC | Launch Operations Control Center |
| T&D | TransPortation And Docking |
| VPI | Valve Position Indicator |
| UL | Upper Left (S-Band Antenna) |
| CIS | Contractor's Information Submittal |
| FCE | Flight Control Equipment |
| PRR | Program Requirements Review |
| LRV | Launch Readiness Verification |
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