| Acronym | Meaning |
 | IB | Inert Building |
| LOL | Limit Of Liability |
| PS | Pressure Switch |
| RCHCS | Regenerable CO And Humidity Contro SYstem |
| DPP | Data Processing And Software |
| KB | Keyboard |
| PIRN | Preliminary Interface Revision Notice |
| OMET | Orbiter Mission Elapsed Time |
| C&T | Communications And Tracking |
| MSA | MSA-1 |
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