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| Any accident or incident associated with the operation of an aircraft, or any situation or condition that could, if left unattended, induce an accident or incident | |||
| aviation: 26 phrases in 8 subjects |
| Abbreviation | 11 |
| Meteorology | 4 |
| Military | 3 |
| NASDAQ | 1 |
| Oceanography & oceanology | 1 |
| Trademark | 1 |
| Transport | 4 |
| United States | 1 |