---
kind: "section"
citation: "14 C.F.R. § 25.1438"
title: "14"
number: "25.1438"
heading: "Pressurization and pneumatic systems."
url: "https://uscodex.org/cfr/14/25.1438"
---

# §25.1438. Pressurization and pneumatic systems.

- (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)](#a) or [(b)](#b) of this section if the Administrator finds it equivalent to the required test.

## Notes

### Amendments

[Amdt. 25-41, 42 FR 36971, July 18, 1977]

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note).

### Source

Source: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.

### Amendments

[Amdt. 25-41, 42 FR 36971, July 18, 1977]