14 C.F.R. § 27.1565 Tail rotor.
Title 14 - Aeronautics and Space
Each tail rotor must be marked so that its disc is conspicuous under normal daylight ground conditions. [Amdt. 27–2, 33 FR 965, Jan. 26, 1968]
Title 14: Aeronautics and Space
PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
Subpart G—Operating Limitations and Information
Markings and Placards
§ 27.1565 Tail rotor.