| Acronym | Meaning |
 | PET | Phase Elapsed Time |
| E | LACS Extended Life Attitude Control System |
| CAPS | Crew Altitude Protection System |
| FSS | Field Spectrometer System |
| FRB | Failure Review Board |
| R/T | Receiver/Transmitter |
| NATL | National |
| MIS | Mission Information Subsystem |
| HPOT | High-pressure Oxidizer Turbopump |
| FPOV | Fuel Preburner Oxidizer Valve |
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