---
kind: "unit"
title: "14"
title_heading: "Aeronautics and Space"
key: "chI/subchC/part21/subpartN"
level: "subpart"
label: "Subpart N"
heading: "Acceptance of Aircraft Engines, Propellers, and Articles for Import"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/14/chI-subchC-part21-subpartN"
sections_count: 2
---

# Subpart N — Acceptance of Aircraft Engines, Propellers, and Articles for Import

Title 14 C.F.R. — Aeronautics and Space › Chapter I — Federal Aviation Administration, Department of Transportation › Subchapter C — Aircraft › Part 21 — Certification Procedures for Products and Articles

## Sections

- [§21.500. Acceptance of aircraft engines and propellers.](/cfr/14/21.500.md)
- [§21.502. Acceptance of articles.](/cfr/14/21.502.md)