Part 21 - CERTIFICATION PROCEDURES FOR PRODUCTS AND ARTICLES
- Subpart A - GENERAL (§§ 21.1 — 21.9)
- Subpart B - TYPE CERTIFICATES (§§ 21.11 — 21.55)
- Subpart C - PROVISIONAL TYPE CERTIFICATES (§§ 21.71 — 21.85)
- Subpart D - CHANGES TO TYPE CERTIFICATES (§§ 21.91 — 21.101)
- Subpart E - SUPPLEMENTAL TYPE CERTIFICATES (§§ 21.111 — 21.120)
- Subpart F - PRODUCTION UNDER TYPE CERTIFICATE (§§ 21.121 — 21.130)
- Subpart G - PRODUCTION CERTIFICATES (§§ 21.131 — 21.150)
- Subpart H - AIRWORTHINESS CERTIFICATES (§§ 21.171 — 21.199)
- Subpart I - PROVISIONAL AIRWORTHINESS CERTIFICATES (§§ 21.211 — 21.225)
- Subpart K - PARTS MANUFACTURER APPROVALS (§§ 21.301 — 21.320)
- Subpart L - EXPORT AIRWORTHINESS APPROVALS (§§ 21.321 — 21.335)
- Subpart N - ACCEPTANCE OF AIRCRAFT ENGINES, PROPELLERS, AND ARTICLES FOR IMPORT (§§ 21.500 — 21.502)
- Subpart O - TECHNICAL STANDARD ORDER APPROVALS (§§ 21.601 — 21.621)
- Subpart P - SPECIAL FEDERAL AVIATION REGULATIONS (§ 21.700)
- Appendix Special Federal Aviation Regulation No. 88 - Fuel Tank System Fault Tolerance Evaluation Requirements