Columbia Accident Investigation Board Report Volume 2 October 2003 Note Distribution Limited To Regional Libraries Only

Vols. 2-6 of the CAIB's Final Report contain appendices that provide the supporting documentation for the main text of the Final Report contained in Vol. 1, which was released on Aug. 26, 2003. These appendix materials were working documents. They contain a number of conclusions and proposed recommendations, several of which were adopted by the CAIB in Vol. 1. The other conclusions and proposed recommendations drawn in Vols. 2-6 do not necessarily reflect the views of the CAIB but are included for the record. When there is conflict, Vol. 1 takes precedence. It alone is the CAIB's official statement.

NASA commissioned the Columbia Accident Investigation Board (CAIB) to conduct a thorough review of both the technical and the organizational causes of the loss of the Space Shuttle Columbia and her crew on February 1, 2003. The accident investigation that followed determined that a large piece of insulating foam from Columbia's external tank (ET) had come off during ascent and struck the leading edge of the left wing, causing critical damage. The damage was undetected during the mission. The Columbia accident was not survivable. After the Columbia Accident Investigation Board (CAIB) investigation regarding the cause of the accident was completed, further consideration produced the question of whether there were lessons to be learned about how to improve crew survival in the future. This investigation was performed with the belief that a comprehensive, respectful investigation could provide knowledge that can protect future crews in the worldwide community of human space flight. Additionally, in the course of the investigation, several areas of research were identified that could improve our understanding of both nominal space flight and future spacecraft accidents. This report is the first comprehensive, publicly available accident investigation report addressing crew survival for a human spacecraft mishap, and it provides key information for future crew survival investigations. The results of this investigation are intended to add meaning to the sacrifice of the crew's lives by making space flight safer for all future generations.