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Title 49

Displaying title 49, up to date as of 10/15/2026. Title 49 was last amended 10/13/2026.
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Title 49TransportationPart / Section
Subtitle BOther Regulations Relating to Transportation100 – 1699
Chapter VIIINational Transportation Safety Board800 – 999
Part 831Investigation Procedures831.1 – 831.64
Subpart AGeneral831.1 – 831.15
§ 831.1Applicability of this subpart.
§ 831.2Responsibility of the NTSB.
§ 831.3Authority of Directors.
§ 831.4Nature of investigation.
§ 831.5Priority of NTSB investigations.
§ 831.6Request to withhold information.
§ 831.7Representation during an interview.
§ 831.8Investigator-in-charge.
§ 831.9Authority during investigations.
§ 831.10Autopsies and postmortem testing.
§ 831.11Parties to the investigation.
§ 831.12Access to and release of wreckage, records, mail, and cargo.
§ 831.13Provision and dissemination of investigative information.
§ 831.14Proposed findings.
§ 831.15Civil penalties.
Subpart BAviation Investigations831.20 – 831.22
§ 831.20Authority of NTSB in aviation accident investigations.
§ 831.21Other Government agencies and NTSB aviation investigations.
§ 831.22International aviation investigations.
Subpart CHighway Investigations831.30
§ 831.30Authority of NTSB in highway investigations.
Subpart DRailroad, Pipeline, and Hazardous Materials Investigations831.40
§ 831.40Authority of NTSB in railroad, pipeline, and hazardous materials investigations.
Subpart EMarine Investigations831.50 – 831.64