Code of Federal Regulations > Title 14 > Chapter I > Part 21 - PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND ARTICLES

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

Appendix - Special Federal Aviation Regulation No. 88—Fuel Tank System Fault Tolerance Evaluation Requirements

Subpart A [§ 21.1 - § 21.9] - Subpart A—General

Subpart B [§ 21.11 - § 21.55] - Subpart B—Type Certificates

Subpart C [§ 21.71 - § 21.85] - Subpart C—Provisional Type Certificates

Subpart D [§ 21.91 - § 21.101] - Subpart D—Changes to Type Certificates

Subpart E [§ 21.111 - § 21.120] - Subpart E—Supplemental Type Certificates

Subpart F [§ 21.121 - § 21.130] - Subpart F—Production Under Type Certificate

Subpart G [§ 21.131 - § 21.150] - Subpart G—Production Certificates

Subpart H [§ 21.171 - § 21.199] - Subpart H—Airworthiness Certificates

Subpart I [§ 21.211 - § 21.225] - Subpart I—Provisional Airworthiness Certificates

Subpart J - Subpart J [Reserved]

Subpart K [§ 21.301 - § 21.320] - Subpart K—Parts Manufacturer Approvals

Subpart L [§ 21.321 - § 21.335] - Subpart L—Export Airworthiness Approvals

Subpart M - Subpart M [Reserved]

Subpart N [§ 21.500 - § 21.502] - Subpart N—Acceptance of Aircraft Engines, Propellers, and Articles for Import

Subpart O [§ 21.601 - § 21.621] - Subpart O—Technical Standard Order Approvals

Subpart P [§ 21.700 - § 21.700] - Subpart P—Special Federal Aviation Regulations