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.


Part 21 - Certification Procedures for Products, Articles, and Parts

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