14 CFR § 35.17 - Materials and manufacturing methods.

---
identifier: "/us/cfr/t14/s35.17"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 35.17 - Materials and manufacturing methods."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "35.17"
section_name: "Materials and manufacturing methods."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "AIRCRAFT"
part_number: "35"
part_name: "AIRWORTHINESS STANDARDS: PROPELLERS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704."
regulatory_source: "Docket No. 2095, 29 FR 7458, June 10, 1964, unless otherwise noted."
cfr_part: "35"
---


# 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.

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