10 U.S. Code § 2254. Treatment of reports of aircraft accident investigations
(a) In General.—
For purposes of this section, an accident investigation is any form of investigation of an aircraft accident other than an investigation (known as a “safety investigation”) that is conducted solely to determine the cause of the accident and to obtain information that may prevent the occurrence of similar accidents.
(b) Public Disclosure of Certain Accident Investigation Information.—
(1) The Secretary concerned, upon request, shall publicly disclose unclassified tapes, scientific reports, and other factual information pertinent to an aircraft accident investigation, before the release of the final accident investigation report relating to the accident, if the Secretary concerned determines—
that such tapes, reports, or other information would be included within and releasable with the final accident investigation report; and
(c) Opinions Regarding Causation of Accident.—Following a military aircraft accident—
if the evidence surrounding the accident is sufficient for the investigators who conduct the accident investigation to come to an opinion (or opinions) as to the cause or causes of the accident, the final report of the accident investigation shall set forth the opinion (or opinions) of the investigators as to the cause or causes of the accident; and
if the evidence surrounding the accident is not sufficient for those investigators to come to an opinion as to the cause or causes of the accident, the final report of the accident investigation shall include a description of those factors, if any, that, in the opinion of the investigators, substantially contributed to or caused the accident.
(d) Use of Information in Civil Proceedings.—
For purposes of any civil or criminal proceeding arising from an aircraft accident, any opinion of the accident investigators as to the cause of, or the factors contributing to, the accident set forth in the accident investigation report may not be considered as evidence in such proceeding, nor may such information be considered an admission of liability by the United States or by any person referred to in those conclusions or statements.
The Secretary of each military department shall prescribe regulations to carry out this section.
“The Secretary of Defense shall prescribe regulations, which shall be applied uniformly across the Department of Defense, establishing procedures by which the military departments shall provide to the family members of any person involved in a military aviation accident periodic update reports on the conduct and progress of investigations into the accident.”