14 C.F.R. § 27.691 Autorotation control mechanism.
Title 14 - Aeronautics and Space
Each main rotor blade pitch control mechanism must allow rapid entry into autorotation after power failure.
Title 14: Aeronautics and Space
PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
Subpart D—Design and Construction
Control Systems
§ 27.691 Autorotation control mechanism.