14 C.F.R. § 23.601 General.
Title 14 - Aeronautics and Space
The suitability of each questionable design detail and part having an important bearing on safety in operations, must be established by tests.
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart D—Design and Construction
§ 23.601 General.
