| Acronym | Meaning |
 | SPAD | Shuttle Payload Accommodation Document |
| MS | Material Specification |
| ITMG | Integrated Thermal/Micrometeoroid Garment |
| UTC | United Technology Center |
| LLI | Limited Life Item |
| ML | PED Mobile Launcher Pedestal |
| HESS | High Energy Squib Simulator |
| PRSDS | Power Reactant Storage And Distribution System |
| EMC | Electromagnetic Compatibility |
| TOO | Threshold Of Odor |
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