---
kind: "section"
citation: "14 C.F.R. § 31.31"
title: "14"
number: "31.31"
heading: "General."
url: "https://uscodex.org/cfr/14/31.31"
---

# §31.31. General.


The suitability of each design detail or part that bears on safety must be established by tests or analysis.


## Notes

### Authority

Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.

### Source

Source: Docket No. 1437, 29 FR 8258, July 1, 1964, as amended by Amdt. 31-1, 29 FR 14563, Oct. 24, 1964, unless otherwise noted.