| Personnel issues › Task performance | 620Personnel issues › Task performance: 620 occurrences, 52.5% of occurrences with cause findings. 107 were fatal. The bar is scaled to the largest row. | 52.5% | 107 | 171 |
| Aircraft › Aircraft oper/perf/capability | 534Aircraft › Aircraft oper/perf/capability: 534 occurrences, 45.3% of occurrences with cause findings. 105 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 45.3% | 105 | 173 |
| Personnel issues › Action/decision | 324Personnel issues › Action/decision: 324 occurrences, 27.5% of occurrences with cause findings. 76 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 27.5% | 76 | 121 |
| Environmental issues › Conditions/weather/phenomena | 191Environmental issues › Conditions/weather/phenomena: 191 occurrences, 16.2% of occurrences with cause findings. 45 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 16.2% | 45 | 81 |
| Aircraft › Aircraft power plant | 171Aircraft › Aircraft power plant: 171 occurrences, 14.5% of occurrences with cause findings. 26 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 14.5% | 26 | 33 |
| Aircraft › Aircraft systems | 170Aircraft › Aircraft systems: 170 occurrences, 14.4% of occurrences with cause findings. 22 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 14.4% | 22 | 40 |
| Personnel issues › Psychological | 122Personnel issues › Psychological: 122 occurrences, 10.3% of occurrences with cause findings. 43 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 10.3% | 43 | 80 |
| Environmental issues › Physical environment | 113Environmental issues › Physical environment: 113 occurrences, 9.6% of occurrences with cause findings. 20 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 9.6% | 20 | 28 |
| Aircraft › Fluids/miscellaneous hardware | 100Aircraft › Fluids/miscellaneous hardware: 100 occurrences, 8.5% of occurrences with cause findings. 14 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 8.5% | 14 | 17 |
| Not determined › Not determined | 62Not determined › Not determined: 62 occurrences, 5.3% of occurrences with cause findings. 22 were fatal. The bar is scaled to the largest row (Personnel issues › Task performance, 620). | 5.3% | 22 | 31 |