| Acronym | Meaning |
| MTBF | Mean Time Between Failure |
| POA | Plan Of Action |
| ESVS | Escape Suit Ventilation System |
| CCP | Charge Capacitance Probe |
| SBTC | Speed Brake/Thrust Controller |
| SP-SMO | Site Management Office (KSC Shuttle) |
| SEC | Secondary |
| DACS | Digital Acquisition And Control System |
| BCU | Bus Control Unit |
| SRM | SPecification Requirements Manual |