StacksVerified U.S. regulatory reference

49 CFR §831.50

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The regulations in this subpart apply when the NTSB is leading a marine or major marine casualty investigation.
  2. (b)In a marine or major marine casualty investigation led by the United States Coast Guard (USCG), this subpart applies if:
    1. (1)Upon USCG's request for assistance, the NTSB is leading an associated investigative activity; or
    2. (2)Upon coordination with the USCG, the NTSB elects to collect, test or analyze additional evidence beyond the scope of the USCG's investigation.