| Acronym | Meaning |
 | SEC | Sequential Events Controller |
| GRO | Gamma Ray Observatory |
| PDRSTA | Payload Deployment And Retrieval System Test Article |
| FMEA | Failure Modes And Effects Analysis |
| RTD | Real-Time Display |
| EIASN | End Item Assembly Sequence Number |
| SR&Q | Safety |
| PHSF | Payload Hazardous Servicing Facility |
| TDRSS | Tracking And Data Relay Satellite System |
| U | Uranium |
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