§ 831.51 - Definitions.

§ 831.51 Definitions.

The following definitions apply throughout this subpart.

IIC means the NTSB investigator-in-charge.

Investigative activity means an activity performed by or under the direction of the NTSB during a casualty investigation led by the USCG.

Major marine casualty is defined in joint regulations of the NTSB and USCG at 49 CFR 850.5(e) and 46 CFR 4.40–5(d), respectively.

Marine casualty means—

(1) Any casualty, accident or event described in 46 CFR 4.03–1

(2) An occurrence that results in an abandonment of a vessel

(3) Other marine occurrences that the NTSB or USCG, or both, determine require investigation.