| Acronym | Meaning |
 | HMC | Hybrid Microcircuit |
| PRACA | Problem Reporting And Corrective Action |
| GSSC | Ground Support Simulation Computer |
| K-IUSPS | KSC IUS Project Specification |
| IP | Instrumentation Payload |
| EES | Escape Ejection Suit |
| IUS | Inertial UPper Stage (was Interim UPper Stage) |
| CSAT | Combined Systems Acceptance Test |
| FSGS | Flare/Shallow Glide Slope |
| SOMS | Shuttle Orbiter Medical System |
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