14 C.F.R. § 23.641 Proof of strength.
Title 14 - Aeronautics and Space
The strength of stressed-skin wings must be proven by load tests or by combined structural analysis and load tests.
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart D—Design and Construction
Wings
§ 23.641 Proof of strength.
