Supersedes: AFI51-503, 26 May 2010; AFI51-507, 28 May 2010 This publication describes when and how to conduct aerospace and ground accident investigations, how to prepare and distribute accident reports, and how to store and dispose of accident wreckage, related documents and materials. It also addresses release of accident information and interactions with the next-of-kin, Congress, media, and other interested parties. It prescribes convening authority (CA), accident investigation board president, legal advisor, other board members, and host installation commander duties and responsibilities. This publication implements guidance from Air Force Policy Directive (AFPD) 51-5, Section B, Military Legal Affairs, and Department of Defense Instruction 6055.07, Mishap Notification, Investigation, Reporting, and Record Keeping, as it pertains to legal investigations and reports; and the provisions of Title 10, United States Code, Sections 2254 and 2255 relating to aircraft accident investigations. It also complements Air Force Instruction (AFI) 91-204, Safety Investigations and Reports, and AFPD 91-2, Safety Programs.