To view the questions and answers about a 14 CFR part 21 subpart or section, click on the subpart in the list below. If you have a question, and you do not find your question or answer on the related subpart web page, please follow instructions at the bottom of the subpart page to send your questions to us.
| Subpart | Title | Sections | Updated |
|---|---|---|---|
| A | General | 21.1 - 21.9 | 12/02/2009 |
| B | Type Certificates | 21.11 - 21.55 | 09/07/2010 |
| C | Provisional Type Certificates | 21.71 - 21.85 | |
| D | Changes to Type Certificates | 21.91 - 21.101 | 12/29/2009 |
| E | Supplemental Type Certificates | 21.111 - 21.120 | |
| F | Production Under Type Certificate | 21.121 - 21.130 | 12/01/2009 |
| G | Production Certificates | 21.131 - 21.150 | 09/07/2010 |
| H | Airworthiness Certificates | 21.171 - 21.199 | 12/02/2009 |
| I | Provisional Airworthiness Certificates | 21.211 - 21.225 | |
| J | Delegation Option Authorization Procedures | 21.231 - 21.293 | |
| K | Parts Manufacturer Approvals | 21.301 - 21.320 | 04/27/2010 |
| L | Export Airworthiness Approvals | 21.321 - 21.335 | 09/07/2010 |
| N | Acceptance of Aircraft Engines, Propellers, and Articles for Import | 21.500 - 21.502 | |
| O | Technical Standard Order Approvals | 21.601 - 21.621 | |
| Other | Part 21 Questions Not Related to a Specific Subpart or Section | 12/29/2009 |
Page Last Modified: 09/07/10 12:00 EDT
This page can be viewed online at: http://www.faa.gov/aircraft/air_cert/production_approvals/14cfr_amendments/QandA/part21/