CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER C—AIRCRAFT (parts 21 to 50) > PART 33—AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES > SUBPART B—Design and Construction; General (§33.11 to §33.29) > 33.15—Materials.

33.15—Materials.

The suitability and durability of materials used in the engine must—
(a) Be established on the basis of experience or tests; and
(b) Conform to approved specifications (such as industry or military specifications) that ensure their having the strength and other properties assumed in the design data.

Code of Federal Regulations

(Secs. 313(a), 601, and 603, 72 Stat. 759, 775, 49 U.S.C. 1354(a), 1421 , and 1423; sec. 6(c), 49 U.S.C. 1655(c))

Code of Federal Regulations

[Amdt. 33-8, 42 FR 15047, Mar. 17, 1977, as amended by Amdt. 33-10, 49 FR 6850, Feb. 23, 1984]