| without requiring additional pilot training | 10 | other |
| by two pilots | 5 | other |
| single-pilot | 3 | other |
| aircraft → be → certified | 86 |
| aircraft → be certified for → flight | 9 |
| aircraft → be certified in → accordance | 6 |
| aircraft → be certified under → part | 3 |
| aircraft → be certified for → operation | 3 |
| negative | neutral | positive |
| 0.091 | 0.696 | 0.214 |
| Raw frequency | 107 |
| Normalized frequency | 0.660 |
| Modifier score | 0.825 |
| Perplexity | 420.092 |