| Acronym | Meaning |
 | EIFA | Element Interface Functional Analysis |
| MU | Mobile Unit |
| SLF | Shuttle Landing Facility (KSC) |
| AST | Astro Star Tracker |
| PKD | Programmable Keyboard And Display |
| SDM | SYstem Definition Manual |
| PAPI | Precision Approach Path Indicator |
| RFC | Request For Change Revolution |
| FPM | Folding Platform Mechanism |
| GET | Ground Elapsed Time |
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