| Acronym | Meaning |
| RSF | Refurbishment And Subassembly Facility (KSC) |
| MCA | Maximum Crossing Altitude |
| PTCS | Passive Thermal Control Section |
| MLW | Maximum Landing Weight |
| ISL/LAR | Integrated Logistics System And Logistics Assessment |
| FPL | Full Power Load |
| FLP | Flap |
| IPS | IRV Isotope Reentry Vehicle |
| DHE | Data-handling Equipment |
| PDRD | Procurement Data Requirements Document |