| Acronym | Meaning |
 | SSC | Shuttle System Contractor |
| PRN | Pulse Range Navigation |
| RCP | Right Circular Polarization |
| OMMH | Orbiter Maintenance Man-Hours |
| MSFN | Manned Space Flight Network |
| ERSI | Elastomeric Reusable Surface Insulation |
| PCL | Primary Coolant Loop |
| NI-SIL | NNI-SILNickel-Silver |
| LEH | Launch/Entry Helmet |
| GMIL | SpGMILSpaceffight Tracking And Data Network (STDN) |
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