The Air Accident Investigation Branch (AAIB) has reached its 100th anniversary of investigating accidents to make aviation safer. During its history the AAIB has investigated nationally-significant accidents to understand why they happen, without apportioning blame or liability, to learn lessons, prevent similar accidents and improve travel safety. Visit the AAIB website: https://www.gov.uk/government/organisations/air-accidents-investigation-branch Video transcript: In 1915 Captain George Cockburn was appointed to investigate the underlying causes of aircraft accidents in the Royal Flying Corps. One hundred years later, the Air Accidents Investigation Branch continues his work. Its success led to other investigation branches being created. The Herald of Free Enterprise disaster resulted in the formation of the Marine Accident Investigation Branch in 1989; and following a report into the Ladbroke Grove rail crash the Rail Accident Investigation Branch was created in 2005 to investigate accidents on UK railways and trams. When things go wrong, these specialist and totally independent investigators focus solely on the causes of an accident without apportioning blame or liability, producing reports that have helped make air, rail and maritime travel safer worldwide.