| Acronym | Meaning |
 | WUSCI | Western Union Space Communications |
| GCC | Ground Communications Coordinator |
| NPD | NASA PolicyDirective |
| AFE | American Flight Echocardiograph |
| PPS | Provisioning Performance Schedule |
| SKD | Singer |
| RCCA | Rough Combustion Cutoff Assembly |
| EPS | Electrical Power System (Subsystem) |
| FCEI | Facility Contractor End Item |
| DME | Distance Measur Ng EquiPment |
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