| Acronym | Meaning |
 | PTMS | Precision Torque Measuring System |
| TFL | Time From Launch |
| BPD | Baseline Program Documentation |
| SPA | Signal Processor Assembly |
| SA | Site Activation |
| M | Missing (Data) |
| I | LAS Instrument Landing Approach System |
| SOT | Strap-on Tank |
| SIVE | Shuttle Interface Verification EquiPment |
| SIA | Software Impact Assessment |
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