14 C.F.R. § 23.303 Factor of safety.
Title 14 - Aeronautics and Space
Unless otherwise provided, a factor of safety of 1.5 must be used.
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart C—Structure
General
§ 23.303 Factor of safety.