In the early 1990s , following the UK Kegworth air disaster ( 8 January 1989 ) , a research project was undertaken by a group of surgeons , air accident investigators and pathologists to analyse the injury profile of the passengers and crew on board the aircraft . This project led to the first research-based definition of the passenger 's brace position
Kegworth air disaster
Kegworth air disaster
International Board for Research into Aircraft Crash Events