# 49 C.F.R. § 831.1 (2026): Applicability of this subpart

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_1

## Section

- **Citation:** 49 C.F.R. § 831.1 (2026)
- **Heading:** Applicability of this subpart
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 49 CFR: Transportation / Chapter VIII: NATIONAL TRANSPORTATION SAFETY BOARD / Part 831: INVESTIGATION PROCEDURES / Subpart A: General / § 831.1: § 831.1   Applicability of this subpart.

## Text

(a) Except as provided in Subpart E of this part regarding marine casualties, and unless specified by the National Transportation Safety Board (NTSB), the provisions of this subpart apply to all NTSB investigations conducted under its statutory authority.
(b) Consistent with its statutory authority, the NTSB conducts investigations of transportation accidents that include, but are not limited to: accidents, collisions, crashes, derailments, explosions, incidents, mishaps, ruptures, or other similar accidents. Use of the term “accident” throughout this part includes all such occurrences.
(c) Throughout this part, the term “IIC” means the NTSB investigator-in-charge.

## Nearby sections

- [49 C.F.R. § 831.1 (2026) § 831.1   Applicability of this subpart.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_1.md)
- [49 C.F.R. § 831.2 (2026) § 831.2   Responsibility of the NTSB.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_2.md)
- [49 C.F.R. § 831.3 (2026) § 831.3   Authority of Directors.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_3.md)
- [49 C.F.R. § 831.4 (2026) § 831.4   Nature of investigation.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_4.md)
- [49 C.F.R. § 831.5 (2026) § 831.5   Priority of NTSB investigations.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_5.md)
- [49 C.F.R. § 831.6 (2026) § 831.6   Request to withhold information.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_6.md)
- [49 C.F.R. § 831.7 (2026) § 831.7   Representation during an interview.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_7.md)
- [49 C.F.R. § 831.8 (2026) § 831.8   Investigator-in-charge.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_8.md)
- [49 C.F.R. § 831.9 (2026) § 831.9   Authority during investigations.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_9.md)
- [49 C.F.R. § 831.10 (2026) § 831.10   Autopsies and postmortem testing.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_10.md)
- [49 C.F.R. § 831.11 (2026) § 831.11   Parties to the investigation.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_11.md)
- [49 C.F.R. § 831.12 (2026) § 831.12   Access to and release of wreckage, records, mail, and cargo.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_12.md)
- [49 C.F.R. § 831.13 (2026) § 831.13   Provision and dissemination of investigative information.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_13.md)
- [49 C.F.R. § 831.14 (2026) § 831.14   Proposed findings.](https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_14.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T49_P831_S831_1. Check the current official text before relying on it. Not legal advice.