14 C.F.R. § 31.41 Inspection provisions.
Title 14 - Aeronautics and Space
There must be a means to allow close examination of each part that require repeated inspection and adjustment.
Title 14: Aeronautics and Space
PART 31—AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS
Subpart D—Design Construction
§ 31.41 Inspection provisions.