| Acronym | Meaning |
| FCT | Fuel Cell Test |
| IOC | Indirect Operating Costs |
| TDD | Task Description Document |
| DRSS | Discrepancy Report SquawkSheet |
| BSI | Basic Shipping Instructions |
| GTA | Ground Torquing Assembly |
| FEMCPL | Facilities And Envir- Measurement Comp. Parts List |
| IFU | InterfaceUnit |
| LPTTL | Low Power Transistor-Transistor Logic |
| MCC | Mission Control Center (JSC) |