14 CFR § 137.31 - Aircraft requirements.

---
identifier: "/us/cfr/t14/s137.31"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 137.31 - Aircraft requirements."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "137.31"
section_name: "Aircraft requirements."
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: "137"
part_name: "AGRICULTURAL AIRCRAFT OPERATIONS"
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(g), 40103, 40113, 44701-44702."
regulatory_source: "Docket 1464, 30 FR 8106, June 24, 1965, unless otherwise noted."
cfr_part: "137"
---


# 137.31 Aircraft requirements.

No person may operate an aircraft unless that aircraft—

(a) Meets the requirements of § 137.19(d); and

(b) Is equipped with a suitable and properly installed shoulder harness for use by each pilot.