14 C.F.R. § 25.1153 Propeller feathering controls.
Title 14 - Aeronautics and Space
(a) There must be a separate propeller feathering control for each propeller. The control must have means to prevent its inadvertent operation. (b) If feathering is accomplished by movement of the propeller pitch or speed control lever, there must be means to prevent the inadvertent movement of this lever to the feathering position during normal operation. [Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25–11, 32 FR 6913, May 5, 1967]
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart E—Powerplant
Powerplant Controls and Accessories
§ 25.1153 Propeller feathering controls.
