| Acronym | Meaning |
| MS | Mission SPecialist |
| USEC | Microsecond |
| EVA | Extravehicular Activity |
| PIRN | Preliminary Interface Revision Notice |
| ICAO | International Civil Aviation Organization |
| IP | Instrumentation/pulse Code Modulation Master Unit Data Bus |
| PC | Chamber Pressure |
| IDA | Interface Display Assembly |
| SMS | Shuttle Mission Simulator |
| CSE | Common Support EquiPment |