| Acronym | Meaning |
 | R | Range |
| IPS | IRD Information Requirements Document |
| IOCU | Input/Output Control Unit |
| LEH | Launch/Entry Helmet |
| NPC | NASA Publication Control |
| IDC | Integrated Displays And Controls |
| ETSS | External Tank Separation Subsystem |
| PSM | Pyro Substitute Monitor |
| KYBD | Keyboard |
| HWWS | Hyperfiltration Wash Water Recovery System |
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