| Acronym | Meaning |
 | RPA | Request For Procurement Action (Authorization) |
| MRDR | Material Review Disposition Record |
| ESCU | Extended Service And Cooling Umbilical |
| LERC | Lewis Research Center (Cleveland |
| CEDC | Cyclic Error Detection Code |
| ECI | Earth Centered Inertia (inertials) |
| GOCA | GrGOCAGround Operations Control Area |
| LSM | ILogistics Support Management Information |
| SEP | SUPPort Equipment Package |
| TACH | Tachometer |
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