[Code of Federal Regulations] [Title 47, Volume 1] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 47CFR17.50] [Page 870] TITLE 47--TELECOMMUNICATION CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION PART 17_CONSTRUCTION, MARKING, AND LIGHTING OF ANTENNA STRUCTURES --Table of Contents Subpart C_Specifications for Obstruction Marking and Lighting of Antenna Structures Sec. 17.50 Cleaning and repainting. Antenna structures requiring painting under this part shall be cleaned or repainted as often as necessary to maintain good visibility. [61 FR 4364, Feb. 6, 1996]