| Acronym | Meaning |
 | SPL | System Programming Language |
| R&CC | Recorder And Communication Control |
| PPL | Provisioning Parts List |
| CLR | Clear |
| MPR | Management Program Review |
| HRL | Horizontal Reference Line |
| FCH | L Flight Control Hydraulics Laboratory |
| MSE | Mechanical Support Equipment |
| ASE | Airborne Support Equipment |
| PPB | Parts Per Billion |
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