| Acronym | Meaning |
 | QLS | Quick Look Station |
| HE | Heat Exchange (Exchanger) |
| PD | Project Directive |
| PSE | Peculiar Support Equipment |
| ECF | Equivalency Capability File |
| STR | LStructural |
| OMCF | Orbiter Maintenance And Checkout Facility |
| THROT | Throttle |
| HPOTP | High Pressure Oxidizer Turbopump |
| UNDK | Undock |
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