| Acronym | Meaning |
 | PDB | Power Distribution Box |
| GSFC | Goddard Space Flight Center |
| VGT | Vehicle Ground Test |
| HRM | High Rate Multiplexer |
| WAD/NU | Work Authorization Number |
| VTX | Vertex |
| SML | Structure Mold Line |
| SSPTF | Santa Susana Propulsion Test Facility (see SSFL) |
| MPR | Maintainability Problem Report |
| GRID | Graphic Retrieval And Information Display |
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