---
kind: "unit"
title: "14"
title_heading: "Aeronautics and Space"
key: "chI/subchC/part21/subpartK"
level: "subpart"
label: "Subpart K"
heading: "Parts Manufacturer Approvals"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/14/chI-subchC-part21-subpartK"
sections_count: 13
---

# Subpart K — Parts Manufacturer Approvals

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

- [§21.301. Applicability.](/cfr/14/21.301.md)
- [§21.303. Application.](/cfr/14/21.303.md)
- [§21.305. Organization.](/cfr/14/21.305.md)
- [§21.307. Quality system.](/cfr/14/21.307.md)
- [§21.308. Quality manual.](/cfr/14/21.308.md)
- [§21.309. Location of or change to manufacturing facilities.](/cfr/14/21.309.md)
- [§21.310. Inspections and tests.](/cfr/14/21.310.md)
- [§21.311. Issuance.](/cfr/14/21.311.md)
- [§21.313. Duration.](/cfr/14/21.313.md)
- [§21.314. Transferability.](/cfr/14/21.314.md)
- [§21.316. Responsibility of holder.](/cfr/14/21.316.md)
- [§21.319. Design changes.](/cfr/14/21.319.md)
- [§21.320. Changes in quality system.](/cfr/14/21.320.md)