| Acronym | Meaning |
 | MAP | Mission Application Program |
 | QD | Quick Disconnect |
 | BRPM | Breath Rate Per Minute |
 | MEE | Mission Essential Equipment |
 | SSIBD | Shuttle System Interface Block Diagram |
 | DRD | Data Requirement Description |
 | VRL | Vertical Recovery Line |
 | ESVS | Escape System Ventilation System |
 | DDS | Documentation Distribution System |
 | DRIRU | Dry Rotor Inertial Reference Unit |