| Acronym | Meaning |
 | HRL | Horizontal Reference Line |
| PSA | Pressure Switch Assembly |
| TLS | Top Left Side |
| RCAG | Remote Control Air-Ground |
| TIMED | Thermosphere, Ionosphere, Mesosphere, Energy, And Dynamics Mission |
| RCS | Reaction Control System (Subsystem) |
| PSD | RPlanning And Scheduling Document Record |
| TDRR | Test Data Recording And Retrieval |
| SRSF | SRB Refurbishment And Subassembly Facility |
| PGM | Program (able) |
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