Part 21 - Certification Procedures for Products and Articles  


Subpart A - General
§ 21.1 - Applicability and definitions.
§ 21.2 - Falsification of applications, reports, or records.
§ 21.3 - Reporting of failures, malfunctions, and defects.
§ 21.4 - ETOPS reporting requirements.
§ 21.5 - Airplane or Rotorcraft Flight Manual.
§ 21.6 - Manufacture of new aircraft, aircraft engines, and propellers.
§ 21.7 - Continued airworthiness and safety improvements for transport category airplanes.
§ 21.8 - Approval of articles.
§ 21.9 - Replacement and modification articles.
Subpart B - Type Certificates
§ 21.11 - Applicability.
§ 21.13 - Eligibility.
§ 21.15 - Application for type certificate.
§ 21.16 - Special conditions.
§ 21.17 - Designation of applicable regulations.
§ 21.19 - Changes requiring a new type certificate.
§ 21.20 - Compliance with applicable requirements.
§ 21.21 - Issue of type certificate: normal, utility, acrobatic, commuter, and transport category aircraft; manned free balloons; special classes of aircraft; aircraft engines; propellers.
§ 21.23 - [Reserved]
§ 21.24 - Issuance of type certificate: primary category aircraft.
§ 21.25 - Issue of type certificate: Restricted category aircraft.
§ 21.27 - Issue of type certificate: surplus aircraft of the Armed Forces.
§ 21.29 - Issue of type certificate: import products.
§ 21.31 - Type design.
§ 21.33 - Inspection and tests.
§ 21.35 - Flight tests.
§ 21.37 - Flight test pilot.
§ 21.39 - Flight test instrument calibration and correction report.
§ 21.41 - Type certificate.
§ 21.43 - Location of manufacturing facilities.
§ 21.45 - Privileges.
§ 21.47 - Transferability.
§ 21.49 - Availability.
§ 21.50 - Instructions for continued airworthiness and manufacturer's maintenance manuals having airworthiness limitations sections.
§ 21.51 - Duration.
§ 21.53 - Statement of conformity.
§ 21.55 - Responsibilities of type certificate holders who license the type certificate.
Appendix B to Part 36 - Aircraft Noise Evaluation Under § 36.103
Appendix C to Part 36 - Noise Levels for Transport Category and Turbojet Powered Airplanes Under § 36.201
Appendix I to Part 36 - [Reserved]
Appendix J to Part 36 - Alternative Noise Certification Procedure for Helicopters Under Subpart H Having a Maximum Certificated Takeoff Weight of Not More Than 6,000 Pounds
Subpart C - Provisional Type Certificates
§ 21.71 - Applicability.
§ 21.73 - Eligibility.
§ 21.75 - Application.
§ 21.77 - Duration.
§ 21.79 - Transferability.
§ 21.81 - Requirements for issue and amendment of Class I provisional type certificates.
§ 21.83 - Requirements for issue and amendment of Class II provisional type certificates.
§ 21.85 - Provisional amendments to type certificates.
Subpart D - Changes to Type Certificates
§ 21.91 - Applicability.
§ 21.93 - Classification of changes in type design.
§ 21.95 - Approval of minor changes in type design.
§ 21.97 - Approval of major changes in type design.
§ 21.99 - Required design changes.
§ 21.101 - Designation of applicable regulations.
Subpart E - Supplemental Type Certificates
§ 21.111 - Applicability.
§ 21.113 - Requirement for supplemental type certificate.
§ 21.115 - Applicable requirements.
§ 21.117 - Issue of supplemental type certificates.
§ 21.119 - Privileges.
§ 21.120 - Responsibility of supplemental type certificate holders to provide written permission for alterations.
Subpart F - Production Under Type Certificate
§ 21.121 - Applicability.
§ 21.122 - Location of or change to manufacturing facilities.
§ 21.123 - Production under type certificate.
§ 21.125 - [Reserved]
§ 21.127 - Tests: aircraft.
§ 21.128 - Tests: aircraft engines.
§ 21.129 - Tests: propellers.
§ 21.130 - Statement of conformity.
Subpart G - Production Certificates
§ 21.131 - Applicability.
§ 21.132 - Eligibility.
§ 21.133 - Application.
§ 21.135 - Organization.
§ 21.137 - Quality system.
§ 21.138 - Quality manual.
§ 21.139 - Location of or change to manufacturing facilities.
§ 21.140 - Inspections and tests.
§ 21.141 - Issuance.
§ 21.142 - Production limitation record.
§ 21.143 - Duration.
§ 21.144 - Transferability.
§ 21.145 - Privileges.
§ 21.146 - Responsibility of holder.
§ 21.147 - Amendment of production certificates.
§ 21.149 - Multiple products.
§ 21.150 - Changes in quality system.
§ 21.151 - Production limitation record.
§ 21.153 - Amendment of the production certificates.
§ 21.155 - Transferability.
§ 21.157 - Inspections and tests.
§ 21.159 - Duration.
§ 21.161 - Display.
§ 21.163 - Privileges.
§ 21.165 - Responsibility of holder.
Subpart H - Airworthiness Certificates
§ 21.171 - Applicability.
§ 21.173 - Eligibility.
§ 21.175 - Airworthiness certificates: classification.
§ 21.177 - Amendment or modification.
§ 21.179 - Transferability.
§ 21.181 - Duration.
§ 21.182 - Aircraft identification.
§ 21.183 - Issue of standard airworthiness certificates for normal, utility, acrobatic, commuter, and transport category aircraft; manned free balloons; and special classes of aircraft.
§ 21.184 - Issue of special airworthiness certificates for primary category aircraft.
§ 21.185 - Issue of airworthiness certificates for restricted category aircraft.
§ 21.187 - Issue of multiple airworthiness certification.
§ 21.189 - Issue of airworthiness certificate for limited category aircraft.
§ 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraft.
§ 21.191 - Experimental certificates.
§ 21.193 - Experimental certificates: general.
§ 21.195 - Experimental certificates: Aircraft to be used for market surveys, sales demonstrations, and customer crew training.
§ 21.197 - Special flight permits.
§ 21.199 - Issue of special flight permits.
Subpart I - Provisional Airworthiness Certificates
§ 21.211 - Applicability.
§ 21.213 - Eligibility.
§ 21.215 - Application.
§ 21.217 - Duration.
§ 21.219 - Transferability.
§ 21.221 - Class I provisional airworthiness certificates.
§ 21.223 - Class II provisional airworthiness certificates.
§ 21.225 - Provisional airworthiness certificates corresponding with provisional amendments to type certificates.
Subpart J - XXX
§ 21.231 - Applicability.
§ 21.235 - Application.
§ 21.239 - Eligibility.
§ 21.243 - Duration.
§ 21.245 - Maintenance of eligibility.
§ 21.247 - Transferability.
§ 21.249 - Inspections.
§ 21.251 - Limits of applicability.
§ 21.253 - Type certificates: application.
§ 21.257 - Type certificates: issue.
§ 21.261 - Equivalent safety provisions.
§ 21.267 - Production certificates.
§ 21.269 - Export airworthiness approvals.
§ 21.271 - Airworthiness approval tags.
§ 21.273 - Airworthiness certificates other than experimental.
§ 21.275 - Experimental certificates.
§ 21.277 - Data review and service experience.
§ 21.289 - Major repairs, rebuilding and alteration.
§ 21.293 - Current records.
Subpart K - Parts Manufacturer Approvals
§ 21.301 - Applicability.
§ 21.303 - Application.
§ 21.305 - Organization.
§ 21.307 - Quality system.
§ 21.308 - Quality manual.
§ 21.309 - Location of or change to manufacturing facilities.
§ 21.310 - Inspections and tests.
§ 21.311 - Issuance.
§ 21.313 - Duration.
§ 21.314 - Transferability.
§ 21.316 - Responsibility of holder.
§ 21.319 - Design changes.
§ 21.320 - Changes in quality system.
Subpart L - Export Airworthiness Approvals
§ 21.321 - Applicability.
§ 21.323 - Eligibility.
§ 21.325 - Export airworthiness approvals.
§ 21.327 - Application.
§ 21.329 - Issuance of export certificates of airworthiness.
§ 21.331 - Issuance of export airworthiness approvals for aircraft engines, propellers, and articles.
§ 21.333 - Issue of export airworthiness approval tags for Class III products.
§ 21.335 - Responsibilities of exporters.
§ 21.337 - Performance of inspections and overhauls.
§ 21.339 - Special export airworthiness approval for aircraft.
Subpart M - XXX
§ 21.431 - Applicability.
§ 21.435 - Application.
§ 21.439 - Eligibility.
§ 21.441 - Procedure manual.
§ 21.443 - Duration.
§ 21.445 - Maintenance of eligibility.
§ 21.447 - Transferability.
§ 21.449 - Inspections.
§ 21.451 - Limits of applicability.
§ 21.461 - Equivalent safety provisions.
§ 21.463 - Supplemental type certificates.
§ 21.473 - Airworthiness certificates other than experimental.
§ 21.475 - Experimental certificates.
§ 21.477 - Data review and service experience.
§ 21.493 - Current records.
Subpart N - Acceptance of Aircraft Engines, Propellers, and Articles for Import
§ 21.500 - Acceptance of aircraft engines and propellers.
§ 21.502 - Acceptance of articles.
Subpart O - Technical Standard Order Approvals
§ 21.601 - Applicability and definitions.
§ 21.603 - Application.
§ 21.605 - Organization.
§ 21.607 - Quality system.
§ 21.608 - Quality manual.
§ 21.609 - Location of or change to manufacturing facilities.
§ 21.610 - Inspections and tests.
§ 21.611 - Issuance.
§ 21.613 - Duration.
§ 21.614 - Transferability.
§ 21.615 - FAA inspection.
§ 21.616 - Responsibility of holder.
§ 21.617 - Issue of letters of TSO design approval: import appliances.
§ 21.618 - Approval for deviation.
§ 21.619 - Design changes.
§ 21.620 - Changes in quality system.
§ 21.621 - Issue of letters of TSO design approval: Import articles.
Subpart P - Special Federal Aviation Regulations
§ 21.700 - SFAR No. 111 - Lavatory Oxygen Systems.
Special Federal Aviation Regulation No. 118-1 - Relief for Certain Persons During the National Emergency Concerning the Novel Coronavirus Disease (COVID-19) Public Health Emergency
Special Federal Aviation Regulation No. 118-2 - Relief for Certain Persons During the National Emergency Concerning the Novel Coronavirus Disease (COVID-19) Public Health Emergency
SFAR No. 26
Special Federal Aviation Regulation No. 41
Special Federal Aviation Regulation No. 88 - Fuel Tank System Fault Tolerance Evaluation Requirements
Special Federal Aviation Regulation No. 118 - Relief for Certain Persons During the Coronavirus Disease 2019 (COVID-19) Outbreak