sentences:  Following the Kegworth Air Disaster the United Kingdom Civil Aviation Authority (CAA) commissioned the Cranfield Institute to research a best brace position for passengers in an air crash.This research was conducted by the Cranfield Impact Centre Laboratories using both their impact sled and computer modelling.Cranfield also conducted research on behalf of the CAA after the Manchester Air Disaster to assess why so many passengers were unable to make it to the emergency exits safely.