| Acronym | Meaning |
| PWA | Pratt And Whitney Aircraft |
| PMHL | Preferred Measurement Hardware List |
| FORTRAN | Formula Translation |
| OPF | Orbiter Processing Facility |
| SSS | Subsystem Segment |
| PRSD | Power Reactant Storage And Distribution |
| ISTF | Integrated System Test Flow |
| MSL | Missile |
| GRTLS | Glide Return To Landing Site |
| COQ | Certificate Of Qualification |