---
kind: "section"
citation: "14 C.F.R. § 39.3"
title: "14"
number: "39.3"
heading: "Definition of airworthiness directives."
url: "https://uscodex.org/cfr/14/39.3"
---

# §39.3. Definition of airworthiness directives.


FAA's airworthiness directives are legally enforceable rules that apply to the following products: aircraft, aircraft engines, propellers, and appliances.


## Notes

### Authority

Authority: 49 U.S.C. 106(g), 40113, 44701.

### Source

Source: Docket No. FAA-2000-8460, 67 FR 48003, July 22, 2002, unless otherwise noted.