| Acronym | Meaning |
 | PTA | Propulsion Test Article |
| P | Pitch |
| GCDC | Ground Checkout Display And Control |
| NASCOM | NASA Communications Network |
| EM | Exception Monitor |
| FDM | Frequency Division Multiplexer |
| SD | Space Division (AFSC) |
| SPAS | Shuttle Pallet Satellite (German) |
| LC | Intercomputer |
| SCSG | Strain Gauge Signal Conditioner |
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