14 CFR § 93.311 - Minimum terrain clearance.

---
identifier: "/us/cfr/t14/s93.311"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 93.311 - Minimum terrain clearance."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "93.311"
section_name: "Minimum terrain clearance."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "F"
subchapter_name: "AIR TRAFFIC AND GENERAL OPERATING RULES"
part_number: "93"
part_name: "SPECIAL AIR TRAFFIC RULES"
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), 40103, 40106, 40109, 40113, 44502, 44514, 44701, 44715, 44719, 46301."
cfr_part: "93"
---


# 93.311 Minimum terrain clearance.

Except in an emergency, when necessary for takeoff or landing, or unless otherwise authorized by the responsible Flight Standards Office for a purpose listed in § 93.309(c), no person may operate an aircraft within 500 feet of any terrain or structure located between the north and south rims of the Grand Canyon.

[Docket FAA-2018-0851, Amdt. 93-102, 83 FR 48212, Sept. 24, 2018]