49 CFR § 831.2 - Responsibility of the NTSB.

---
identifier: "/us/cfr/t49/s831.2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 831.2 - Responsibility of the NTSB."
title_number: 49
title_name: "Transportation"
section_number: "831.2"
section_name: "Responsibility of the NTSB."
chapter_name: "NATIONAL TRANSPORTATION SAFETY BOARD"
part_number: "831"
part_name: "INVESTIGATION PROCEDURES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 1113(f)."
regulatory_source: "82 FR 29685, June 29, 2017, unless otherwise noted."
cfr_part: "831"
---


# 831.2 Responsibility of the NTSB.

The NTSB is required to investigate—

(a) Aviation accidents as described in subpart B of this part;

(b) Highway accidents as described in subpart C of this part;

(c) Railroad, pipeline, and hazardous materials accidents as described in subpart D of this part; and

(d) Any accident that occurs in connection with the transportation of people or property that, in the judgment of the NTSB, is catastrophic, involves problems of a recurring nature or would otherwise carry out the intent of its authorizing statutes. This authority includes selected events involving the transportation of hazardous materials, including their release.