CFR›Title 47›Chapter I›Part 17 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 17—CONSTRUCTION, MARKING, AND LIGHTING OF ANTENNA STRUCTURES Subparts A Subpart A—General Information Sections 17.1–17.6 B Subpart B—Federal Aviation Administration Notification Criteria Sections 17.7–17.17 C Subpart C—Specifications for Obstruction Marking and Lighting of Antenna Structures Sections 17.21–17.58 Authority47 U.S.C. 154, 301, 303, 309. Previous 16 Part 16—Digital Discrimination of Access Next 18 Part 18—Industrial, Scientific, and Medical Equipment