A review of aircraft fire accident investigation techniques: Research, process, and cases

Fires frequently contribute to aircraft accidents, leading to significant damage, injuries, and fatalities. Nevertheless, the increasing complexity of modern large aircraft structures, along with the utilization of new aviation fuels and materials, has further complicated aircraft fire accidents. Therefore, the application of scientific methodologies and technological advancements is crucial for investigating and determining the causes of aircraft fires. This paper analyzes and discusses various techniques employed in the investigation of aircraft fires, encompassing fire behavior characterization, analysis of aviation material debris, and evaluation of ignition energy. Additionally, it presents an overview and comprehensive discussion of the scientific investigation process employed in aircraft fire incidents. Lastly, this paper presents recent case studies of typical aircraft fires, including crash fires, engine fires, electrical failures, equipment failures, and fires caused by external sources. This study has three overarching themes. The study provides a comprehensive review of the current research on aircraft fire-related issues while highlighting the investigation process and scientific analysis methods employed in aircraft fire incidents. Case studies demonstrate technical investigations of typical aircraft fire incidents are provided. These cases exemplify the complexity involved in aircraft fire investigations and emphasize the criticality of analyzing failure particulars in understanding fire incidents. This paper promote the advancement of technical investigations of aircraft fire incidents by advocating for the updating of research findings and investigation practices related to aircraft fires.