---
kind: "section"
citation: "49 C.F.R. § 831.1"
title: "49"
number: "831.1"
heading: "Applicability of this subpart."
url: "https://uscodex.org/cfr/49/831.1"
---

# §831.1. Applicability of this subpart.

- (a) Except as provided in [Subpart E](/cfr/49/subpartE.md) 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.

## Notes

### Authority

Authority: 49 U.S.C. 1113(f). Section 831.15 also issued under Pub. L. 101-410, 104 Stat. 890, amended by Pub. L. 114-74, sec. 701, 129 Stat. 584 (28 U.S.C. 2461 note).

### Source

Source: 82 FR 29685, June 29, 2017, unless otherwise noted.