This edition covers all aspects of accident investigation from theory to organizing, gathering and analyzing data, to reporting, recommendations and follow-up. Special features include in-depth descriptions of analytical techniques in order to understand the strengths and weaknesses of each technique. The book is divided into four parts: Part I is an introduction to the accident sequence. Part II describes the organization of accident investigations. It includes instructions for gathering information, interviewing, documenting, preserving evidence, retrieving data, and analytically processing this information to determine exactly what happened. Part III provides thorough explanations of analytical techniques that are useful in investigating accidents. Numerous examples and worksheets are included, and the benefits, weaknesses, and appropriateness of each technique are discussed. Part IV covers accident documentation and follow-up activities, and tells how to develop recommendations and corrective actions.