Safety Investigation Authority

The Safety Investigation Authority of Finland (SIAF^[1] or SIA,^[2] Finnish: Onnettomuustutkintakeskus, lit. Accident Investigation Center, shortened to OTKES; Swedish: Olycksutredningscentralen) is the accident investigation authority of Finland. It investigates all major accidents, and all aviation, maritime, and rail accidents and incidents.^[3] SIAF is located within the Ministry of Justice,^[3] and is headquartered in Helsinki, Finland.^[4]

Head office of the Safety Investigation Authority of Finland

The SIAF was previously known in English as the Accident Investigation Board of Finland.^[5]

Organization

The SIAF consists of five investigation branches: aviation, maritime, rail, other accidents, and exceptional events. The SIA has appointed a chief investigator to each.^[6]

Investigation branch	Description	Chief investigator
Aviation	The investigation of incidents and accidents regarding aviation in Finland.[7]	Ismo Aaltonen
Maritime	The investigation of accidents and dangerous situations that take place on Finnish territorial waters or in which a Finland-based vessel is involved.[8]	Risto Haimila
Rail	The investigation of especially hazardous accidents that happen either in rail, metro, or tram traffic, such as level crossing accidents, rolling stock fires, and train collisions.[9]	Esko Värttiö
Social and Healthcare	The purpose of the investigation branch is to investigate social and healthcare accidents in Finland.[10]	Hanna Tiirinki
Other accidents	The Other accidents-branch investigates serious accidents that pose a risk to life or that cause significant economic or environmental harm.[11]	Kai Valonen
Exceptional events	Exceptional events are events of a non-accidental nature, in which a severe risk to life and society is posed. The SIAF has investigated four of such events during its history: the Jokela school shooting (2007), Kauhajoki school shooting (2008), death of 8-year-old Eerika [fi] (2012), and Turku stabbing (2017).[12]

These two tachographs were retrieved by the Safety Investigation Authority from the Konginkangas bus disaster in 2004