| Acronym | Meaning |
 | RFC | Request For Change Revolution |
 | EMU | Extravehicular Mobility Unit |
 | COMB | Combustion |
 | RDW | Return Data Words |
 | FCOS | Flight Computer Operating System |
 | CDB | Command Data Base |
 | HMCC | Hypergolic Maintenance And Checkout Cell |
 | ARTS | Automated Resource Tracking System - ARTEMIS |
 | BP | Blood Pressure |
 | SIA | Shuttle Induced Atmosphere |