The Safety Investigation Authority of Finland (SIAF"M2013-02 ms FINNARROW contact with quay in Holyhead 16 February 2013 ." Onnettomuustutkintakeskus. 20 February 2013. Retrieved on 12 May 2013. or SIA, , lit. Accident Investigation Center, shortened to ; ) is the accident investigation authority of Finland. It investigates all major accidents, and all aviation, maritime, and rail accidents and incidents. SIAF is located within the Ministry of Justice, and is headquartered in Helsinki, Finland.
The SIAF was previously known in English as the Accident Investigation Board of Finland."Annual Report 2009." Accident Investigation Board of Finland. Retrieved on 11 May 2013.
Organization The SIAF consists of five investigation branches: aviation, maritime, rail, social and healthcare, and other accidents. In addition, the government can ask SIAF to investigate any other exceptional events. The SIA has appointed a chief investigator to each branch. Investigation branchDescriptionChief investigatorAviationThe investigation of incidents and accidents regarding aviation in Finland.Ismo AaltonenMaritimeThe investigation of accidents and dangerous situations that take placeon Finnish territorial waters or in which a Finland-based vessel is involved.Risto HaimilaRailThe investigation of especially hazardous accidents that happen either inrail, metro, or tram traffic, such as level crossing accidents, rolling stockfires, and train collisions.Esko VärttiöSocial and Healthcare The purpose of the investigation branch is to investigate social and healthcare accidents in Finland.Hanna TiirinkiOther accidentsThe Other accidents-branch investigates serious accidents that pose a risk to life or that cause significant economic or environmental harm.Kai ValonenExceptional eventsExceptional events are not accidents but posed a severe risk to life and society. The SIAF has investigated six of such events (as of 2025): the Jokela school shooting (2007), Kauhajoki school shooting (2008), (2012), Turku stabbing (2017), COVID-19 pandemic in Finland (2020), and City of Helsinki data breach (2024).
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Safety Investigation Authority Safety Investigation Authority Safety Investigation Authority Safety Investigation Act (525/2011)