14 C.F.R. § 27.341 Gust loads.
Title 14 - Aeronautics and Space
The rotorcraft must be designed to withstand, at each critical airspeed including hovering, the loads resulting from a vertical gust of 30 feet per second.
Title 14: Aeronautics and Space
PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
Subpart C—Strength Requirements
Flight Loads
§ 27.341 Gust loads.
