| Acronym | Meaning |
 | AWP | Awaiting Parts |
 | TTL | Transistor Transistor Logic |
 | TIP | Terminal Interface Program |
 | APARS | Automated Printing And Retrieval System |
 | RDT | Reliability Development Test |
 | PD | Position Description |
 | TDP | Turbine Exhaust Pressure |
 | CCB | Change Control Board |
 | FRAC | Framework Requirements & Criteria |
 | VASI | Visual Approach Slope Indicator |