| Acronym | Meaning |
 | PUV | Propellant Utilization Valve |
| OMCF | Orbiter Maintenance And Checkout Facility |
| DDR | Detail Design Review |
| TRRB | Test Readiness Review Board |
| PGE | Purge |
| MSC | Manned Spacecraft Center (changed To JSC) |
| GSI | Glide Slope Indicator |
| S/A | Spacecraft Adapter |
| G&NS | Guidance And Navigation Subsystem |
| OGS | Outer Glideslope |
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