| Acronym | Meaning |
| FV | FlighL Version |
| FCE | Flight Control Equipment |
| PSS | Payload Specialist Station |
| CPDS | Crew Procedures Documentation System |
| PRSD | Power Reactant Storage And Distribution |
| PHMC | Probe Heater Motor Controller |
| KDN | Kinetically Designed Nozzle |
| SF | Directorate) |
| MTTA | Mean Time To Accomplish |
| OIS | Orbiter Instrumentation Systems |