COMDTINST M5830.4 governs Coast Guard Major Incident Investigations for operational Class A and Class B mishaps.
View COMDTINST M5830.4 on armypubs.army.mil
It covers MII authority, board composition, evidence, witness interviews, findings of fact, statements of opinion, and report release. It requires investigative procedures, evidence standards, recorded testimony, and report-content rules.
Applies to: The policy and procedures prescribed in this Manual are required for the investigation of operational Class A and Class B mishaps, independent of the Mishap Analysis Board (MAB) directed by Reference (a).
The policy and procedures prescribed in this Manual are required for the investigation of operational Class A and Class B mishaps, independent of the Mishap Analysis Board (MAB) directed by Reference (a).
MAB members may not serve as MII members for the same mishap. (paragraph 4)
The MII Board or Single Investigating Officer must complete the MII report within 60 days from the date the MII convenes, unless granted an extension by the convening authority. (paragraph 5)
Do not offer promises of confidentiality to witnesses. There is no authority to grant confidentiality while conducting a MII. (paragraph 5)
Preserve all witness testimony with audio recording. (paragraph 1)