Which PCAR part provides the requirements for investigating accidents and incidents?

The correct choice pertains to PCAR Part 13, which specifically outlines the requirements and procedures for investigating accidents and incidents. This part is important because it establishes a structured framework that ensures thorough examination and analysis of events that have led to accidents or incidents. This can include gathering evidence, interviewing witnesses, and reviewing data to identify root causes and factors that contributed to the occurrence.

Part 13 is critical in enhancing safety and accountability within the industry, as it promotes learning from past events to prevent future occurrences. By mandating how investigations should be conducted, it ensures consistency and thoroughness, leading to more effective safety protocols and practices.

Other parts, such as 10, 11, and 12, cover different areas within the regulations, which do not focus specifically on the investigation processes related to accidents and incidents. Therefore, they do not adequately address the requirements necessary for conducting investigations, making them less relevant to this question.