The 5P in root cause analysis includes parts, positions, paper, people, and paradigms. First is parts of the mechanics involved in the incidents must be preserved, second is positions that are recorded in photos to have accurate access to incident conditions. The third P stands for paper of the latest inspection report and the company’s regulations regarding the matter, the fourth is people involved in the incidents (including the engineer, technician, and the last inspector assessing the safety). The last p is for paradigms or perception of the issue.