| Acronym | Meaning |
 | HRS | Hours |
| SEMS | Space Environment Monitor System |
| PAC | Problem Action Center |
| FCA | Frequency Control Analysis |
| SMCH | Standard Mixed Cargo Harness |
| EGC | Experiments Ground Computer |
| NPL | Normal Power Level (see RPL) |
| PTA | Potential Toxic Area |
| COMPL | Completed |
| MAF | Manpower Authorization File |
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