| 1 | Wreckage investigation |
| 2 | Organizational investigation |
| 3 | Operational investigation |
| 4 | Aircraft operating environment |
| 5 | Aircraft performance investigation |
| 6 | Flight recorders |
| 7 | Reconstruction of wreckage |
| 8 | Structures investigation |
| 9 | Mid-air collision investigation |
| 10 | Fire pattern investigation |
| 11 | Power plant investigation |
| 12 | System investigation |
| 13 | Maintenance investigation |
| 14 | Helicopter investigation |
| 15 | Investigating human factors |
| 16 | Survival, evacuation, search, rescue |
| 17 | Pathology investigation |
| 18 | Investigating of explosives sabotage |
| 19 | Investigating system design issues |