| Acronym | Meaning |
| BD | Binary Digit |
| MTM | Methods Time Measurement |
| FIFO | First In-First Out (High Speed Data Buffers) |
| EDC | Engineering Design Change |
| HUDE | Head Up Display Electronics |
| CB/AC | Circuit Breaker (ac Only) |
| NL | NNL No Limit |
| CR/DIR | Change Request Directive |
| RST | Recessed Selectromatic Terminal |
| TCTO | Time Compliance Technical Order |