| Acronym | Meaning |
 | POT | Potable |
| SRCBD | Software Requirements Control Board Directive |
| DTS | Data Transfer System |
| OC | Orbital Check |
| HIU | Headset Interface Unit |
| HPU | Hydraulic Power Unit |
| LACB | Landing Aids Control Building (SLF At KSC) |
| FDS | Functional Design Specifications |
| OFDS | Orbiter Flight Dynamics Simulator |
| EVS | Equipment VisibilitY System |
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