14 CFR § 139.331 - Obstructions.

---
identifier: "/us/cfr/t14/s139.331"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 139.331 - Obstructions."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "139.331"
section_name: "Obstructions."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "G"
subchapter_name: "AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS"
part_number: "139"
part_name: "CERTIFICATION OF AIRPORTS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 106(f), 40113, 44701-44706, 44709, 44719, 47175."
regulatory_source: "Docket FAA-2000-7479, 69 FR 6424, Feb. 10, 2004, unless otherwise noted."
cfr_part: "139"
---


# 139.331 Obstructions.

In a manner authorized by the Administrator, each certificate holder must ensure that each object in each area within its authority that has been determined by the FAA to be an obstruction is removed, marked, or lighted, unless determined to be unnecessary by an FAA aeronautical study. FAA Advisory Circulars contain methods and procedures for the lighting of obstructions that are acceptable to the Administrator.