| Acronym | Meaning |
| OLSA | Orbiter/LPS Signal Adapter |
| CPC | Characteristics Properties Code |
| PA | Public Address |
| PRD | Procurement Regulation Directive |
| NARS | National Archives And Record Services |
| BCH | Bose-Chaudhuri-Hocquenghen (Computer Code) |
| FAR | Final Acceptance Review |
| T | Thermostabilized |
| PM | Performance Monitor |
| SACS | Software Avionics Command SuPport |