Part 21 - CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart A – General
Subpart B – Type Certificates
Subpart C – Provisional Type Certificates
Subpart D – Changes to Type Certificates
Subpart E – Supplemental Type Certificates
Subpart F – Production Under Type Certificate Only
Subpart G – Production Certificates
Subpart H – Airworthiness Certificates
Subpart I – Provisional Airworthiness Certificates
Subpart J – Delegation Option Authorization Procedures
Subpart K – Approval of Materials, Parts, Processes, and Appliances
Subpart L – Export Airworthiness Approvals
Subpart M – Designated Alteration Station Authorization Procedures
Subpart N – Acceptance of Aircraft Engines, Propellers, and Articles for Import
Subpart O – Technical Standard Order Authorizations