14 C.F.R. § 29.735 Brakes.
Title 14 - Aeronautics and Space
For rotorcraft with wheel-type landing gear, a braking device must be installed that is— (a) Controllable by the pilot; (b) Usable during power-off landings; and (c) Adequate to— (1) Counteract any normal unbalanced torque when starting or stopping the rotor; and (2) Hold the rotorcraft parked on a 10-degree slope on a dry, smooth pavement. [Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29–24, 49 FR 44437, Nov. 6, 1984]
Title 14: Aeronautics and Space
PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT
Subpart D—Design and Construction
Landing Gear
§ 29.735 Brakes.