| Acronym | Meaning |
 | ELS | Earth Landing System (Subsystem) |
| RR | RendezvousRadar |
| PMN | Program Management Network |
| MSA | Minimum Surface Area |
| SSPDS | Space Shuttle Payload Data Study |
| PSIA | Pound Per Square Inch Absolute |
| H | EPAHigh Efficiency Particle Accumulator |
| LPS/CDS | LPS/Central Data Subsystem |
| SCB | Simulation Control And Training SYstem |
| VRCS | Vernier Reaction Control System |
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