---
kind: "section"
citation: "14 C.F.R. § 35.17"
title: "14"
number: "35.17"
heading: "Materials and manufacturing methods."
url: "https://uscodex.org/cfr/14/35.17"
---

# §35.17. Materials and manufacturing methods.

- (a) **The suitability and durability of materials used in the propeller must—**
  - (1) **Be established on the basis of experience, tests, or both.**
  - (2) **Account for environmental conditions expected in service.**
- (b) All materials and manufacturing methods must conform to specifications acceptable to the Administrator.
- (c) The design values of properties of materials must be suitably related to the most adverse properties stated in the material specification for applicable conditions expected in service.

## Notes

### Amendments

[Amdt. 35-8, 73 FR 63347, Oct. 24, 2008]

### Authority

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

### Source

Source: Docket No. 2095, 29 FR 7458, June 10, 1964, unless otherwise noted.

### Amendments

[Amdt. 35-8, 73 FR 63347, Oct. 24, 2008]