| Acronym | Meaning |
 | MMT | Mass Memory Test |
 | FCR | Flight Control Room |
 | IPS | IRV Isotope Reentry Vehicle |
 | NRTS | Not Repairable At This Station |
 | IPS | IRD Information Requirements Document |
 | ITA | Integrated Test Article |
 | OPBOV | Oxidizer Preburner Oxidizer Valve |
 | SOMS | Shuttle Orbiter Medical System |
 | APC | Adaptive Payload Carrier |
 | PIB | Pyrotechnic Installation Building |