[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: 47CFR17.57] [Page 871] 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. 17.57 Report of radio transmitting antenna construction, alteration, and/or removal. The owner of an antenna structure for which an Antenna Structure Registration Number has been obtained must notify the Commission within 24 hours of completion of construction (FCC Form 854-R) and/or dismantlement (FCC Form 854). The owner must also immediately notify the Commission using FCC Form 854 upon any change in structure height or change in ownership information. [61 FR 4364, Feb. 6, 1996]