| Acronym | Meaning |
| IOCU | Input/Output Control Unit |
| JSLWG | Joint Spacelab Working Group |
| ORT | Operational Readiness Test |
| ORF | Orifice |
| EID | End Item Documentation |
| LMS | Logistics Master Schedules |
| DCOP | Detailed Checkout Procedures |
| IPS | IRR InsPection Rejection Report |
| RDCS | Reconfiguration Data Collection SYstem |
| HCV | Hydrogen Check Valve |