14 C.F.R. § 25.1438 Pressurization and pneumatic systems.
Title 14 - Aeronautics and Space
(a) Pressurization system elements must be burst pressure tested to 2.0 times, and proof pressure tested to 1.5 times, the maximum normal operating pressure. (b) Pneumatic system elements must be burst pressure tested to 3.0 times, and proof pressure tested to 1.5 times, the maximum normal operating pressure. (c) An analysis, or a combination of analysis and test, may be substituted for any test required by paragraph (a) or (b) of this section if the Administrator finds it equivalent to the required test. [Amdt. 25–41, 42 FR 36971, July 18, 1977]
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart F—Equipment
Miscellaneous Equipment
§ 25.1438 Pressurization and pneumatic systems.
