| Acronym | Meaning |
 | TARC | Test Article Specification |
| PD | Propellant Dispersal |
| L&L | Launch And Landing |
| EL | Electroluminescent |
| PRCB | ProgramRequirementsChangeBoard |
| OTP | Operations Turnaround Plan |
| SG | LSSpace Ground Link Station |
| OLF | Orbiter Landing Facility (now SLF) |
| ISS | Inertial Subsystem |
| LOC | Launch Operations Complex |
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