49 CFR § 831.8 - Investigator-in-charge.

---
identifier: "/us/cfr/t49/s831.8"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 831.8 - Investigator-in-charge."
title_number: 49
title_name: "Transportation"
section_number: "831.8"
section_name: "Investigator-in-charge."
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"
---


# 831.8 Investigator-in-charge.

In addition to the subpoena and deposition authority delegated to investigative officers under this chapter, a person designated as IIC for an investigation is authorized to—

(a) Organize, conduct, control, and manage the field phase of an investigation, even when a Board Member is present;

(b) Coordinate all resources and supervise all persons (including persons not employed by the NTSB) involved in an on-site investigation; and

(c) Continue his or her organizational and management responsibilities through all phases of the investigation, including consideration and adoption of a report or brief determining one or more probable causes of an accident.