| Acronym | Meaning |
 | PSST | Periodic Significant Scheduled Tasks |
| OMRP | Operations And Maintenance Requirements Plan |
| STA | Station |
| SV | State Vector |
| PWBS | Program Work Breakdown Structure |
| TBI | Through-Bulkhead Initiator |
| EU | Experimental Unit |
| ORD | Operational Requirements Document |
| OMCF | Orbiter Maintenance And Checkout Facility |
| SR&Q | Safety |
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